What are the classic features and management of Irukandji Syndrome (Carukia barnesi jellyfish in northern Australian waters) vs. Blue-Ringed Octopus (Hapalochlaena) envenomation?

Irukandji Syndrome: minor initial sting followed 20–40 minutes later by severe generalized back/chest/abdominal muscle cramps, profuse sweating, agitation, feeling of 'impending doom', catecholamine surge (severe hypertension, tachyarrhythmia), and troponin rise/cardiogenic pulmonary oedema → flood skin with Vinegar, treat pain with titrated IV Fentanyl/Morphine + IV Magnesium Sulfate, and control severe hypertension with IV GTN/phentolamine. Blue-Ringed Octopus: saliva contains Tetrodotoxin (blocks voltage-gated Na+ channels) → painless bite followed within minutes by perioral paresthesia and rapid complete flaccid respiratory paralysis while the patient remains fully conscious (pupils may be fixed/dilated)—no antivenom exists; apply PIT and provide immediate Mechanical Ventilation (intubation/BVM) for 24–48 hours until toxin is excreted with full recovery.

In Australian Medical Law, what did the High Court of Australia landmark decision in Rogers v Whitaker (1992) establish regarding Informed Consent?

Rejected the English Bolam principle for risk disclosure: an Australian doctor has a legal duty to warn a patient of any 'material risk' inherent in a proposed procedure—even if the statistical probability is very small (such as the 1 in 14,000 risk of sympathetic ophthalmia causing blindness in the patient's good eye in Maree Whitaker's case)—if a reasonable person in the patient's position would likely attach significance to the risk, OR if the doctor is (or should reasonably be) aware that this particular patient would likely attach significance to it.

In Australian Dermatology (Cancer Council Australia), how are Melanoma and Non-Melanoma Skin Cancers (BCC & SCC) biopsied and excised?

Suspected Melanoma ('ABCDE' or 'EFG'—Elevated, Firm, Growing nodular melanoma): perform an initial complete Excisional Biopsy with 2 mm clinical margins (and cuff of subcutaneous fat; NEVER shave or punch biopsy a suspected melanoma unless very large facial lentigo maligna). Subsequent Wide Local Excision (WLE) margins depend SOLELY on Breslow Thickness (histological depth in mm): In situ = 5 mm margin; ≤1.0 mm = 1 cm; 1.01–2.0 mm = 1–2 cm; 2.01–4.0 mm = 1–2 cm; >4.0 mm = 2 cm (plus Sentinel Lymph Node Biopsy if Breslow >1.0 mm or >0.8 mm with ulceration).

In Gynaecology (RANZCOG), what are the Rotterdam Criteria for Polycystic Ovary Syndrome (PCOS), its metabolic complications, and first-line ovulation induction?

Requires ≥2 of 3 in adults (after excluding CAH, thyroid disease, hyperprolactinaemia, androgen-secreting tumours): 1) Oligo- or anovulation, 2) Clinical and/or biochemical hyperandrogenism (hirsutism, acne, elevated free androgen index), 3) Polycystic ovaries on transvaginal ultrasound (≥20 follicles per ovary and/or ovarian volume ≥10 mL; note: ultrasound is NOT used to diagnose PCOS within 8 years of menarche in adolescents!). Manage metabolic risk (OGTT, lipids, weight loss 5–10% restores ovulation), Combined OCP for menstrual cycle regulation/endometrial protection & hirsutism, and Letrozole (aromatase inhibitor—FIRST-LINE ahead of clomiphene per Australian international PCOS guideline) for ovulation induction.

In Gynaecology (RANZCOG), how must Postmenopausal Bleeding (PMB—any vaginal bleeding ≥12 months after final menstrual period) be investigated?

Endometrial cancer must be excluded in all women with PMB: perform a Pelvic Speculum Exam (plus Cervical Screening Test) and Transvaginal Ultrasound (TVUS). In a postmenopausal woman not on HRT, an endometrial thickness ≤4 mm has a >99% negative predictive value for endometrial cancer; if endometrial thickness is >4 mm (or if bleeding persists/recurs regardless of thickness), perform Pipelle Endometrial Biopsy or Hysteroscopy with D&C.

In Australian Toxinology (AMC CAT MCQ #1 Emergency Topic), what is the Pressure Immobilisation Technique (PIT) first aid for all Australian Elapid Snakebites, Funnel-Web Spider bites, Blue-Ringed Octopus, and Cone Shell stings?

Apply a broad firm elasticised bandage (10–15 cm wide, at lymphatic pressure similar to a sprained ankle) over the bite site and then wrap the ENTIRE limb from fingers/toes upward, immobilise the limb with a splint, keep the patient completely still (bring transport to the patient), and mark the bite location on the outside of the bandage. NEVER wash or wipe the bite site (venom swab from skin is used for the Snake Venom Detection Kit [VDK] if needed), never tourniquet, cut, or suck the wound.

How do Medicare and the Pharmaceutical Benefits Scheme (PBS) operate in Australia, including Bulk Billing, the Medicare Safety Net, and Authority Prescriptions?

Medicare is Australia's universal tax-funded health insurance scheme (administered by Services Australia) covering free public hospital care and subsidizing outpatient GP/specialist consultations listed on the Medicare Benefits Schedule (MBS). In 'Bulk Billing', the doctor accepts the MBS rebate directly from Medicare as full payment with $0 out-of-pocket gap fee for the patient. The PBS subsidizes the cost of approved prescription medicines so patients pay only a capped co-payment (lower for Concession Card holders and free/reduced under the Closing the Gap [CTG] PBS Co-payment program for Indigenous Australians); 'Authority Required' PBS items require prior approval (or streamlined code) confirming specific clinical criteria.

In ENT on the AMC CAT MCQ, how do you interpret Weber and Rinne Tuning Fork (512 Hz) tests to distinguish Conductive vs. Sensorineural Hearing Loss, and what is the hallmark of Acoustic Neuroma (Vestibular Schwannoma)?

Normal: Weber midline; Rinne Positive bilaterally (Air Conduction > Bone Conduction). Unilateral Conductive Loss (wax, otitis media, otosclerosis): Weber lateralizes to the AFFECTED ear; Rinne is Negative (Bone > Air) in the affected ear. Unilateral Sensorineural Loss (presbycusis, noise, Ménière's, acoustic neuroma): Weber lateralizes to the NORMAL (unaffected) ear; Rinne is Positive (Air > Bone) in both ears. Unilateral sensorineural hearing loss + unilateral tinnitus ± imbalance/facial numbness mandates MRI of the Internal Auditory Meatus (Cerebellopontine Angle) to exclude Vestibular Schwannoma.

According to Austroads 'Assessing Fitness to Drive' national guidelines in Australia, what are the Commercial vs. Private driving restrictions after Syncope, a Single Unprovoked Seizure, Acute MI, and TIA?

Private Vehicle Standards (Austroads): Unexplained Syncope = 4 weeks (vasovagal while standing with clear prodrome = no restriction; cardiac syncope = 4 weeks after successful treatment, e.g., 2 weeks after permanent pacemaker insertion). First Unprovoked Seizure = 6 months seizure-free (Established Epilepsy = 12 months seizure-free). Acute Myocardial Infarction (AMI) = 2 weeks if uncomplicated PCI (4 weeks if medical management/CABG). TIA = 2 weeks after a single TIA (Stroke = 4 weeks). Note: In Australia, the LEGAL duty to report to the Driver Licensing Authority rests primarily with the patient, unless the patient continues to drive despite advice and poses an immediate serious public danger (mandatory doctor reporting applies in South Australia and Northern Territory).

For which Australian bites and stings is the Pressure Immobilisation Technique (PIT) CONTRAINDICATED, and what is the correct first aid instead?

PIT is NOT used for: 1) Redback Spider bites (Latrodectus hasselti—causes intense local pain, regional diaphoresis, hypertension; apply an ICE PACK and analgesia, as PIT worsens local pain), 2) Stonefish, Bullrout, and Stingray barbs (immerse in HOT WATER up to 45°C for 30–90 minutes to denature heat-labile protein venom + local anaesthesia/barb removal), 3) Box Jellyfish (Chironex fleckeri) and Irukandji syndrome (Carukia barnesi—flood sting immediately with VINEGAR [acetic acid] for 30 seconds to prevent undischarged nematocysts from firing, NEVER rub or use fresh water).

When is Snake Antivenom indicated in Australia, how do you choose between Monovalent and Polyvalent antivenom, and what pre-medication rule applies?

Antivenom is indicated ONLY when there is clinical or laboratory evidence of systemic envenomation (VICC coagulopathy, neurotoxicity, myotoxicity, or collapse/hypotension—NOT for an asymptomatic bite alone). Give specific Monovalent Antivenom if the snake guild is known from geography/clinical syndrome/VDK swab (e.g., Brown Snake + Tiger Snake monovalent covers all snakes in Victoria and Tasmania; only Tiger/Copperhead/White-lipped snakes exist in Tasmania), or Polyvalent Antivenom if unknown. Routine pre-medication with antihistamines/steroids is NOT recommended, though low-dose SC/IM adrenaline may be considered in high-risk polyvalent cases, and resuscitation/adrenaline must be immediately at the bedside for anaphylaxis.

Under the Australian Health Practitioner Regulation Agency (AHPRA) and the Health Practitioner Regulation National Law, what are the 4 'Mandatory Notification' triggers requiring a doctor to report another registered health practitioner?

A treating or colleague practitioner MUST make a mandatory notification to AHPRA if they form a reasonable belief that another health practitioner has engaged in 'Notifiable Conduct': 1) Practising the profession while intoxicated by alcohol or drugs, 2) Engaging in sexual misconduct in connection with the practice of the profession, 3) Placing the public at risk of substantial harm because the practitioner has an impairment (Note: In Western Australia, treating doctors are exempt from mandatory reporting of impaired practitioner-patients; across the rest of Australia, a higher threshold of 'substantial risk of harm' applies to treating practitioners), or 4) Placing the public at risk of harm by departing significantly from accepted professional standards.

In Australian Paediatrics (RCH guidelines), how is Non-Accidental Injury (NAI / Child Abuse) recognized and managed?

Red flags: Bruising in any pre-mobile infant ('those who don't cruise, rarely bruise'), bruises on ears, neck, buttocks, torso, or patterned slap/belt marks; Posterior rib fractures, Metaphyseal corner ('bucket-handle') fractures, Spiral femur/humerus fracture in a non-walking infant, fractures of different ages; Retinal haemorrhages + Subdural haematoma + Encephalopathy (Abusive Head Trauma / Shaken Baby Syndrome); 'Glove and stocking' immersion scald burns with sharp waterlines and spared flexion creases; delayed presentation or inconsistent mechanism. Mandatory action: Admit the child to hospital for immediate safety and complete medical assessment (Skeletal survey + Ophthalmology review + CT head if <1–2 yrs), and make a Mandatory Report to State Child Protection Services.

In Australian Dermatology, compare Actinic (Solar) Keratosis, Bowen's Disease (SCC in situ), Basal Cell Carcinoma (BCC), and Keratoacanthoma / Squamous Cell Carcinoma (SCC).

Actinic Keratosis (rough scaly erythematous macule on sun-exposed skin—pre-malignant precursor to SCC): treat single lesions with liquid nitrogen Cryotherapy, or 'field cancerization' with topical 5-Fluorouracil (Efudix) cream for 2–4 weeks or Imiquimod. Bowen's disease: well-demarcated erythematous scaly plaque (full-thickness epidermal atypia without dermal invasion). Nodular BCC: pearly rolled edge with arborizing telangiectasia and central ulceration ('rodent ulcer', locally invasive, rarely metastasizes)—surgical excision with 3–4 mm margins (or Mohs surgery on high-risk facial H-zone). SCC: tender hyperkeratotic indurated nodule/ulcer on sun-damaged skin/lower lip/ear or chronic venous ulcer (Marjolin's ulcer) with metastatic potential—excise with 4–6 mm margins.

Which Adolescent, Pregnant, and Older Adult vaccines are funded on the Australian National Immunisation Program (NIP)?

Adolescents (Year 7 / age 12–13): Single-dose HPV (Gardasil 9) and dTpa booster; Year 10 (age 14–16): Meningococcal ACWY. Pregnant women (every pregnancy): Pertussis (dTpa between 20 and 32 weeks gestation), Influenza (any trimester), and RSV vaccine (Abrysvo at 28–36 weeks). Older Adults: Shingles (2-dose recombinant Shingrix vaccine funded from age 65, and from age 50 for Indigenous Australians), Pneumococcal (13vPCV at age ≥70, or ≥50 for Indigenous adults + 23vPPV), and Annual Influenza (≥65 yrs and all Indigenous people ≥6 months).

In Australian Rural & Remote Occupational/Zoonotic Infections (AMC CAT MCQ), distinguish Q Fever (Coxiella burnetii), Leptospirosis, Ross River Virus, and Hendra Virus.

Q Fever (Coxiella burnetii): inhaled aerosols from placental tissues/birth fluids/dust of cattle, sheep, and goats (abattoir workers, shearers, farmers, vets)—causes abrupt high fever, severe retro-orbital headache, myalgia, granulomatous hepatitis (doughnut granulomas), atypical pneumonia, and culture-negative endocarditis; treat with Oral Doxycycline 100 mg BD for 14 days; prevent with Q-Vax vaccine (requires mandatory pre-vaccination serum antibody AND intradermal skin testing to prevent severe hypersensitivity reactions in previously exposed individuals!). Leptospirosis (banana/dairy/cane workers in QLD): fever, conjunctival suffusion, calf tenderness, jaundice/AKI (Weil's disease)—treat with Doxycycline or Benzylpenicillin. Ross River & Barmah Forest viruses (mosquito-borne alphaviruses): fever, maculopapular rash, and debilitating symmetrical polyarthralgia/arthritis lasting weeks–months (supportive NSAID therapy).

According to Royal Children's Hospital (RCH) Melbourne guidelines, what features distinguish a Simple Febrile Convulsion from a Complex Febrile Convulsion in a child aged 6 months to 6 years?

Simple Febrile Convulsion (all 3 required): 1) Generalized tonic-clonic seizure (no focal features), 2) Duration <15 minutes, and 3) Does NOT recur within 24 hours or within the same febrile illness, with full recovery within 1 hour. Management: Reassure parents (1 in 3 risk of recurrence in future fevers, ~1–2% risk of epilepsy—barely above general population), identify source of fever, do NOT perform routine LP/EEG/neuroimaging for a simple febrile seizure unless meningitis signs are present (note: paracetamol/ibuprofen improve comfort but do NOT prevent febrile seizures).

In Australian Emergency Medicine (ANZCOR Basic & Advanced Life Support), what is the DRSABCD action plan and the compression-to-ventilation ratio for adults, children, and neonates?

DRSABCD: Danger, Response, Send for help (call 000), Airway, Breathing, CPR (30 compressions : 2 breaths at 100–120/min, depth ~5 cm or 1/3 chest depth), Defibrillation. Under ANZCOR guidelines, the 30:2 compression-to-ventilation ratio applies to ALL adults, children, and infants (for both single and two rescuers, except in Newborn resuscitation at birth where the ratio is 3 compressions : 1 ventilation at 90 compressions + 30 breaths = 120 events/minute if HR <60 bpm despite 30s of effective positive-pressure ventilation).

In Australian Indigenous Health ('Closing the Gap'), what is the MBS Item 715 Health Check, and which conditions have disproportionately higher prevalence in Aboriginal and Torres Strait Islander peoples?

MBS Item 715 is an annual Medicare-funded comprehensive preventive health assessment available specifically to Aboriginal and Torres Strait Islander peoples of all ages. Key high-burden conditions tested on AMC CAT MCQ: 1) Chronic Suppurative Otitis Media (CSOM—painless persistent purulent ear discharge >2–6 weeks through a perforated tympanic membrane causing conductive deafness and speech delay; treat with ear cleaning/dry mopping + topical Ciprofloxacin ear drops, NEVER aminoglycoside drops with a perforation), 2) Trachoma (Chlamydia trachomatis serovars A–C—'SAFE' strategy: Surgery for trichiasis, Oral Azithromycin single dose, Facial cleanliness, Environmental improvement), 3) Acute Rheumatic Fever / RHD, 4) Post-Streptococcal Glomerulonephritis & Scabies/Impetigo, 5) Early-onset Type 2 Diabetes, CVD, and CKD.

In Australian Orthopaedic / Sports Medicine, how do you clinically diagnose an Anterior Cruciate Ligament (ACL) Tear vs. Meniscal Tear vs. Achilles Tendon Rupture?

ACL Tear: non-contact pivoting/deceleration injury with an audible 'pop', rapid tense haemarthrosis (swelling within 1–2 hours), and positive Lachman Test (most sensitive) and Anterior Drawer test. Meniscal Tear: twisting injury on a flexed weight-bearing knee, delayed joint effusion (12–24h), joint-line tenderness, mechanical locking/catching, and positive McMurray's or Thessaly's test. Achilles Tendon Rupture: sudden pain in posterior ankle feeling like being 'kicked or shot in the back of the leg', inability to stand on tiptoes, palpable gap in tendon, and positive Simmonds-Thompson calf squeeze test (absent plantarflexion when squeezing the calf).

In Ophthalmology on the AMC CAT MCQ, distinguish Central Retinal Artery Occlusion (CRAO), Central Retinal Vein Occlusion (CRVO), Retinal Detachment, and Wet vs. Dry Age-Related Macular Degeneration (AMD).

CRAO: sudden painless unilateral profound vision loss, relative afferent pupillary defect (RAPD), pale retina with 'cherry-red spot' at the fovea (ophthalmic emergency—ocular massage, carbogen/IOP lowering, stroke workup for carotid emboli/AF/GCA). CRVO: painless sudden/subacute vision loss with 'blood and thunder' fundus (diffuse retinal haemorrhages, dilated tortuous veins, cotton-wool spots; linked to hypertension, diabetes, glaucoma). Retinal Detachment: painless flashes of light (photopsia), shower of floaters, and a 'curtain/shadow' coming across the visual field (urgent vitreoretinal surgery). AMD: loss of central vision with metamorphopsia (straight lines appear wavy on Amsler grid); Dry AMD = drusen & geographic atrophy; Wet (neovascular) AMD = choroidal neovascularization & subretinal haemorrhage—treat urgently with intravitreal anti-VEGF injections (ranibizumab/aflibercept).

In Eating Disorders (RANZCP guidelines), what are the diagnostic features of Anorexia Nervosa vs. Bulimia Nervosa, and what is the Refeeding Syndrome electrolyte hallmark?

Anorexia Nervosa: restriction of energy intake leading to significantly low body weight (BMI <18.5 kg/m², severe <15), intense fear of gaining weight, body image disturbance, bradycardia (<50 bpm), hypotension, hypothermia, lanugo hair, and secondary hypothalamic amenorrhoea/osteoporosis. Bulimia Nervosa: recurrent binge eating + compensatory purging (vomiting, laxatives, diuretics) at least once weekly for 3 months with NORMAL or overweight BMI, Russell's sign (knuckle calluses), parotid gland enlargement, dental enamel erosion, and hypokalaemic hypochloraemic metabolic alkalosis. Refeeding Syndrome (triggered by rapid carbohydrate reintroduction driving insulin surge): hallmark is severe HYPOPHOSPHATAEMIA (plus hypokalaemia, hypomagnesaemia, thiamine depletion, and fatal cardiac arrhythmias/heart failure).

In Australian Palliative Care & Aged Care, what is the difference between an Advance Care Directive (ACD) and an Enduring Guardian / Medical Treatment Decision Maker?

An Advance Care Directive (ACD) is a legally binding document completed by a competent adult recording their specific values and binding refusals of future medical treatment if they later lose decision-making capacity. An Enduring Guardian (NSW/TAS/WA) / Medical Treatment Decision Maker (VIC) / Enduring Power of Attorney for Personal/Health Matters (QLD/ACT) is a person appointed by the adult while capacitous to make health and lifestyle decisions once capacity is lost (distinct from a financial Enduring Power of Attorney).

According to the Australian National Immunisation Program (NIP) Schedule, list the childhood vaccines given at Birth, 2 months (from 6 weeks), 4 months, 6 months, 12 months, 18 months, and 4 years.

Birth: Hepatitis B (monovalent). 2 months & 4 months: DTPa-hepB-IPV-Hib (6-in-1 hexavalent), Pneumococcal (13vPCV), and Oral Rotavirus. 6 months: DTPa-hepB-IPV-Hib (3rd dose; plus 3rd dose of 13vPCV and Influenza annually from 6 months for Aboriginal & Torres Strait Islander children and medically at-risk children). 12 months: MMR (Measles-Mumps-Rubella), Meningococcal ACWY (MenACWY), and 13vPCV booster. 18 months: MMRV (Measles-Mumps-Rubella-Varicella), DTPa booster, and Hib booster (plus Hepatitis A & Pneumococcal boosters in Indigenous children in NT/QLD/SA/WA). 4 years: DTPa-IPV (quadrivalent).

In Australian Geriatrics (AMC CAT MCQ), how do you differentiate Delirium, Dementia, and Pseudodementia (Depression in the elderly), and how is Acute Delirium managed?

Delirium (CAM criteria): Acute onset (hours to days) and fluctuating course, INATTENTION (hallmark—inability to recite months backwards), plus either disorganized thinking or altered level of consciousness; precipitated by 'PINCH ME' (Pain, Infection—UTI/pneumonia, Nutrition/dehydration, Constipation/urinary retention, Hypoxia/hypoglycaemia, Medications—anticholinergics/opioids/benzodiazepines, Environment). Dementia: Insidious onset (months to years), clear consciousness and normal attention until late stages, progressive irreversible cortical decline (MMSE/MoCA/RUDAS—use RUDAS in culturally and linguistically diverse patients;use KICA-Cog in remote Indigenous patients). Pseudodementia: rapid onset depressive symptoms, patient emphasizes memory failures ('I don't know' responses rather than confabulating/trying hard). Manage Delirium by treating the underlying cause and non-pharmacological reorientation first; use low-dose oral Haloperidol (0.5 mg) ONLY for severe agitation posing immediate danger (NEVER haloperidol in Lewy Body or Parkinson's dementia—use Quetiapine or Lorazepam if essential).

According to RANZCOG guidelines, how is Prevention of Early-Onset Neonatal Group B Streptococcal (GBS) Sepsis managed in Australia?

Perform universal recto-vaginal swab screening at 35–37 weeks gestation. Administer Intrapartum IV Benzylpenicillin (3 g loading dose, then 1.5 g every 4 hours until birth; IV Cefazolin if non-severe penicillin allergy, IV Vancomycin if severe penicillin allergy) if ANY of the following apply: 1) Positive GBS swab at 35–37 weeks, 2) GBS bacteriuria during the current pregnancy, 3) Previous infant with invasive GBS disease, 4) Preterm labour <37 weeks, or 5) Intrapartum maternal fever ≥38.0°C or prolonged rupture of membranes ≥18 hours.

What are the major clinical syndromes of Australian Elapid Snake Envenomation (Brown, Tiger, Taipan, Death Adder, Black Snake) and the mandatory lab panel monitored every 4–6 hours?

1) Venom-Induced Consumption Coagulopathy (VICC—prothrombin activators in Brown, Tiger, and Taipan venoms consume fibrinogen: INR unrecordable/>12, aPTT high, Fibrinogen undetectable, D-dimer markedly elevated), 2) Neurotoxicity (descending flaccid paralysis starting with ptosis, diplopia, bulbar palsy, then respiratory paralysis in Tiger, Taipan, and Death Adder), 3) Myotoxicity/Rhabdomyolysis (elevated CK >1,000 U/L, myoglobinuria, hyperkalaemia in Tiger, Mulga/King Brown, and Red-Bellied Black snakes), 4) Thrombotic Microangiopathy (MAHA + thrombocytopenia + AKI). Monitor serial neuro obs, FBC (blood film for schistocytes), Coags (INR, aPTT, Fibrinogen, D-dimer), U&Es, and CK at presentation, 1h after bandage removal, and 6h, 12h, and 24h post-bite.

In Australian Paediatrics (RCH Melbourne Clinical Practice Guidelines), how is Acute Gastroenteritis Dehydration classified and rehydrated in children?

Mild (<3–5% weight loss: alert, moist/slightly dry mucous membranes): Oral Rehydration Solution (ORS/Hydralyte) 50 mL/kg over 4h. Moderate (5–9% weight loss: sunken eyes, lethargy, tachypnoea, reduced skin turgor, capillary refill 2–3s): Rapid Nasogastric (NG) Rehydration with ORS at 25 mL/kg/hour for 4 hours (preferred over IV in RCH guidelines!). Severe (≥10% weight loss: circulatory shock, mottled skin, capillary refill >3s, altered consciousness): Immediate IV fluid bolus of 20 mL/kg 0.9% Sodium Chloride, followed by standard maintenance + deficit replacement using 0.9% NaCl with 5% Glucose.

In Australian Medical Law, what is the Mature Minor principle established by the High Court of Australia in Marion's Case (Secretary, Department of Health and Community Services v JWB and SMB, 1992)?

Adopted the Gillick competence standard into Australian common law: a minor under 18 is capable of giving independent valid consent to medical treatment when they achieve sufficient maturity and intelligence to understand fully the nature and consequences of the proposed treatment. However, non-therapeutic, invasive, irreversible procedures (such as sterilization in an intellectually disabled child in Marion's Case) fall outside parental consent authority and require Family Court authorization.

According to RANZCOG guidelines, when is Cervical Length Screening and Progesterone vs. Cervical Cerclage indicated to prevent Preterm Birth?

Measure transvaginal ultrasound cervical length at the 18–20 week morphology scan (or from 14–16 weeks in women with prior preterm birth <34 weeks or cervical surgery like LLETZ/cone biopsy). If cervical length is ≤25 mm before 24 weeks in a singleton pregnancy: start vaginal micronized Progesterone 200 mg nightly until 36 weeks; consider Rescue/History/Ultrasound-indicated Cervical Cerclage (McDonald suture) if cervix is <10–15 mm or with history of mid-trimester painless cervical dilatation.

According to RANZCOG and ADIPS (Australasian Diabetes in Pregnancy Society) guidelines, how is Gestational Diabetes Mellitus (GDM) diagnosed in Australia?

Unlike Canada's 2-step approach, Australia uses a universal 1-step Fasting 2-hour 75g Oral Glucose Tolerance Test (OGTT) at 24–28 weeks gestation (and early in the 1st trimester if high risk: BMI >30, prior GDM, PCOS, ethnicity, macrosomia). GDM is diagnosed if ANY ONE value meets or exceeds the ADIPS (IADPSG) thresholds: Fasting ≥5.1 mmol/L, 1-hour ≥10.0 mmol/L, OR 2-hour ≥8.5 mmol/L.

In Australian Psychiatry (RANZCP guidelines), how is Postpartum Blues distinguished from Postpartum Depression and Puerperal (Postpartum) Psychosis?

Postpartum Blues (50–80% of mothers): tearfulness, mood lability, irritability peaking at Day 3–5 post-birth and resolving spontaneously within 10–14 days with reassurance/support. Postpartum Depression (10–15%, screened with Edinburgh Postnatal Depression Scale EPDS ≥13): persistent depressed mood, severe anxiety, anhedonia, guilt, impaired bonding starting within weeks to 12 months—treat with CBT + Sertraline (or Escitalopram, safe in breastfeeding). Postpartum Psychosis (1–2 per 1,000 births, strongly linked to Bipolar Disorder): Psychiatric EMERGENCY starting rapidly within Days 1–14 post-birth with delusions (often involving the baby), hallucinations, mania/delirium-like confusion, and high risk of infanticide and suicide—requires immediate inpatient Mother-Baby Unit psychiatric admission, antipsychotics/mood stabilizers, and child safety protection.

AMC CAT MCQ Clinical Medicine II: Emergency/Toxicology (Envenomation), Paediatrics, O&G, Psychiatry, Indigenous Health & Medicare/AHPRA Law

High-yield Australian emergency medicine & toxinology (snake, spider, marine envenomation), Australian National Immunisation Program (NIP), RANZCOG obstetrics & gynaecology, RANZCP psychiatry, Close the Gap Indigenous health, and AHPRA/Medicare medical law.

Level: advanced
Languages: en → en
Cards: 32
Markdown: AMC CAT MCQ Clinical Medicine II: Emergency/Toxicology (Envenomation), Paediatrics, O&G, Psychiatry, Indigenous Health & Medicare/AHPRA Law (.md)

Flashcards (32)

#	Front (Term / Question)	Back (Definition / Answer)
1	What are the classic features and management of Irukandji Syndrome (Carukia barnesi jellyfish in northern Australian waters) vs. Blue-Ringed Octopus (Hapalochlaena) envenomation?	Irukandji Syndrome: minor initial sting followed 20–40 minutes later by severe generalized back/chest/abdominal muscle cramps, profuse sweating, agitation, feeling of 'impending doom', catecholamine surge (severe hypertension, tachyarrhythmia), and troponin rise/cardiogenic pulmonary oedema → flood skin with Vinegar, treat pain with titrated IV Fentanyl/Morphine + IV Magnesium Sulfate, and control severe hypertension with IV GTN/phentolamine. Blue-Ringed Octopus: saliva contains Tetrodotoxin (blocks voltage-gated Na+ channels) → painless bite followed within minutes by perioral paresthesia and rapid complete flaccid respiratory paralysis while the patient remains fully conscious (pupils may be fixed/dilated)—no antivenom exists; apply PIT and provide immediate Mechanical Ventilation (intubation/BVM) for 24–48 hours until toxin is excreted with full recovery.
2	In Australian Medical Law, what did the High Court of Australia landmark decision in Rogers v Whitaker (1992) establish regarding Informed Consent?	Rejected the English Bolam principle for risk disclosure: an Australian doctor has a legal duty to warn a patient of any 'material risk' inherent in a proposed procedure—even if the statistical probability is very small (such as the 1 in 14,000 risk of sympathetic ophthalmia causing blindness in the patient's good eye in Maree Whitaker's case)—if a reasonable person in the patient's position would likely attach significance to the risk, OR if the doctor is (or should reasonably be) aware that this particular patient would likely attach significance to it.
3	In Australian Dermatology (Cancer Council Australia), how are Melanoma and Non-Melanoma Skin Cancers (BCC & SCC) biopsied and excised?	Suspected Melanoma ('ABCDE' or 'EFG'—Elevated, Firm, Growing nodular melanoma): perform an initial complete Excisional Biopsy with 2 mm clinical margins (and cuff of subcutaneous fat; NEVER shave or punch biopsy a suspected melanoma unless very large facial lentigo maligna). Subsequent Wide Local Excision (WLE) margins depend SOLELY on Breslow Thickness (histological depth in mm): In situ = 5 mm margin; ≤1.0 mm = 1 cm; 1.01–2.0 mm = 1–2 cm; 2.01–4.0 mm = 1–2 cm; >4.0 mm = 2 cm (plus Sentinel Lymph Node Biopsy if Breslow >1.0 mm or >0.8 mm with ulceration).
4	In Gynaecology (RANZCOG), what are the Rotterdam Criteria for Polycystic Ovary Syndrome (PCOS), its metabolic complications, and first-line ovulation induction?	Requires ≥2 of 3 in adults (after excluding CAH, thyroid disease, hyperprolactinaemia, androgen-secreting tumours): 1) Oligo- or anovulation, 2) Clinical and/or biochemical hyperandrogenism (hirsutism, acne, elevated free androgen index), 3) Polycystic ovaries on transvaginal ultrasound (≥20 follicles per ovary and/or ovarian volume ≥10 mL; note: ultrasound is NOT used to diagnose PCOS within 8 years of menarche in adolescents!). Manage metabolic risk (OGTT, lipids, weight loss 5–10% restores ovulation), Combined OCP for menstrual cycle regulation/endometrial protection & hirsutism, and Letrozole (aromatase inhibitor—FIRST-LINE ahead of clomiphene per Australian international PCOS guideline) for ovulation induction.
5	In Gynaecology (RANZCOG), how must Postmenopausal Bleeding (PMB—any vaginal bleeding ≥12 months after final menstrual period) be investigated?	Endometrial cancer must be excluded in all women with PMB: perform a Pelvic Speculum Exam (plus Cervical Screening Test) and Transvaginal Ultrasound (TVUS). In a postmenopausal woman not on HRT, an endometrial thickness ≤4 mm has a >99% negative predictive value for endometrial cancer; if endometrial thickness is >4 mm (or if bleeding persists/recurs regardless of thickness), perform Pipelle Endometrial Biopsy or Hysteroscopy with D&C.
6	In Australian Toxinology (AMC CAT MCQ #1 Emergency Topic), what is the Pressure Immobilisation Technique (PIT) first aid for all Australian Elapid Snakebites, Funnel-Web Spider bites, Blue-Ringed Octopus, and Cone Shell stings?	Apply a broad firm elasticised bandage (10–15 cm wide, at lymphatic pressure similar to a sprained ankle) over the bite site and then wrap the ENTIRE limb from fingers/toes upward, immobilise the limb with a splint, keep the patient completely still (bring transport to the patient), and mark the bite location on the outside of the bandage. NEVER wash or wipe the bite site (venom swab from skin is used for the Snake Venom Detection Kit [VDK] if needed), never tourniquet, cut, or suck the wound.
7	How do Medicare and the Pharmaceutical Benefits Scheme (PBS) operate in Australia, including Bulk Billing, the Medicare Safety Net, and Authority Prescriptions?	Medicare is Australia's universal tax-funded health insurance scheme (administered by Services Australia) covering free public hospital care and subsidizing outpatient GP/specialist consultations listed on the Medicare Benefits Schedule (MBS). In 'Bulk Billing', the doctor accepts the MBS rebate directly from Medicare as full payment with $0 out-of-pocket gap fee for the patient. The PBS subsidizes the cost of approved prescription medicines so patients pay only a capped co-payment (lower for Concession Card holders and free/reduced under the Closing the Gap [CTG] PBS Co-payment program for Indigenous Australians); 'Authority Required' PBS items require prior approval (or streamlined code) confirming specific clinical criteria.
8	In ENT on the AMC CAT MCQ, how do you interpret Weber and Rinne Tuning Fork (512 Hz) tests to distinguish Conductive vs. Sensorineural Hearing Loss, and what is the hallmark of Acoustic Neuroma (Vestibular Schwannoma)?	Normal: Weber midline; Rinne Positive bilaterally (Air Conduction > Bone Conduction). Unilateral Conductive Loss (wax, otitis media, otosclerosis): Weber lateralizes to the AFFECTED ear; Rinne is Negative (Bone > Air) in the affected ear. Unilateral Sensorineural Loss (presbycusis, noise, Ménière's, acoustic neuroma): Weber lateralizes to the NORMAL (unaffected) ear; Rinne is Positive (Air > Bone) in both ears. Unilateral sensorineural hearing loss + unilateral tinnitus ± imbalance/facial numbness mandates MRI of the Internal Auditory Meatus (Cerebellopontine Angle) to exclude Vestibular Schwannoma.
9	According to Austroads 'Assessing Fitness to Drive' national guidelines in Australia, what are the Commercial vs. Private driving restrictions after Syncope, a Single Unprovoked Seizure, Acute MI, and TIA?	Private Vehicle Standards (Austroads): Unexplained Syncope = 4 weeks (vasovagal while standing with clear prodrome = no restriction; cardiac syncope = 4 weeks after successful treatment, e.g., 2 weeks after permanent pacemaker insertion). First Unprovoked Seizure = 6 months seizure-free (Established Epilepsy = 12 months seizure-free). Acute Myocardial Infarction (AMI) = 2 weeks if uncomplicated PCI (4 weeks if medical management/CABG). TIA = 2 weeks after a single TIA (Stroke = 4 weeks). Note: In Australia, the LEGAL duty to report to the Driver Licensing Authority rests primarily with the patient, unless the patient continues to drive despite advice and poses an immediate serious public danger (mandatory doctor reporting applies in South Australia and Northern Territory).
10	For which Australian bites and stings is the Pressure Immobilisation Technique (PIT) CONTRAINDICATED, and what is the correct first aid instead?	PIT is NOT used for: 1) Redback Spider bites (Latrodectus hasselti—causes intense local pain, regional diaphoresis, hypertension; apply an ICE PACK and analgesia, as PIT worsens local pain), 2) Stonefish, Bullrout, and Stingray barbs (immerse in HOT WATER up to 45°C for 30–90 minutes to denature heat-labile protein venom + local anaesthesia/barb removal), 3) Box Jellyfish (Chironex fleckeri) and Irukandji syndrome (Carukia barnesi—flood sting immediately with VINEGAR [acetic acid] for 30 seconds to prevent undischarged nematocysts from firing, NEVER rub or use fresh water).
11	When is Snake Antivenom indicated in Australia, how do you choose between Monovalent and Polyvalent antivenom, and what pre-medication rule applies?	Antivenom is indicated ONLY when there is clinical or laboratory evidence of systemic envenomation (VICC coagulopathy, neurotoxicity, myotoxicity, or collapse/hypotension—NOT for an asymptomatic bite alone). Give specific Monovalent Antivenom if the snake guild is known from geography/clinical syndrome/VDK swab (e.g., Brown Snake + Tiger Snake monovalent covers all snakes in Victoria and Tasmania; only Tiger/Copperhead/White-lipped snakes exist in Tasmania), or Polyvalent Antivenom if unknown. Routine pre-medication with antihistamines/steroids is NOT recommended, though low-dose SC/IM adrenaline may be considered in high-risk polyvalent cases, and resuscitation/adrenaline must be immediately at the bedside for anaphylaxis.
12	Under the Australian Health Practitioner Regulation Agency (AHPRA) and the Health Practitioner Regulation National Law, what are the 4 'Mandatory Notification' triggers requiring a doctor to report another registered health practitioner?	A treating or colleague practitioner MUST make a mandatory notification to AHPRA if they form a reasonable belief that another health practitioner has engaged in 'Notifiable Conduct': 1) Practising the profession while intoxicated by alcohol or drugs, 2) Engaging in sexual misconduct in connection with the practice of the profession, 3) Placing the public at risk of substantial harm because the practitioner has an impairment (Note: In Western Australia, treating doctors are exempt from mandatory reporting of impaired practitioner-patients; across the rest of Australia, a higher threshold of 'substantial risk of harm' applies to treating practitioners), or 4) Placing the public at risk of harm by departing significantly from accepted professional standards.
13	In Australian Paediatrics (RCH guidelines), how is Non-Accidental Injury (NAI / Child Abuse) recognized and managed?	Red flags: Bruising in any pre-mobile infant ('those who don't cruise, rarely bruise'), bruises on ears, neck, buttocks, torso, or patterned slap/belt marks; Posterior rib fractures, Metaphyseal corner ('bucket-handle') fractures, Spiral femur/humerus fracture in a non-walking infant, fractures of different ages; Retinal haemorrhages + Subdural haematoma + Encephalopathy (Abusive Head Trauma / Shaken Baby Syndrome); 'Glove and stocking' immersion scald burns with sharp waterlines and spared flexion creases; delayed presentation or inconsistent mechanism. Mandatory action: Admit the child to hospital for immediate safety and complete medical assessment (Skeletal survey + Ophthalmology review + CT head if <1–2 yrs), and make a Mandatory Report to State Child Protection Services.
14	In Australian Dermatology, compare Actinic (Solar) Keratosis, Bowen's Disease (SCC in situ), Basal Cell Carcinoma (BCC), and Keratoacanthoma / Squamous Cell Carcinoma (SCC).	Actinic Keratosis (rough scaly erythematous macule on sun-exposed skin—pre-malignant precursor to SCC): treat single lesions with liquid nitrogen Cryotherapy, or 'field cancerization' with topical 5-Fluorouracil (Efudix) cream for 2–4 weeks or Imiquimod. Bowen's disease: well-demarcated erythematous scaly plaque (full-thickness epidermal atypia without dermal invasion). Nodular BCC: pearly rolled edge with arborizing telangiectasia and central ulceration ('rodent ulcer', locally invasive, rarely metastasizes)—surgical excision with 3–4 mm margins (or Mohs surgery on high-risk facial H-zone). SCC: tender hyperkeratotic indurated nodule/ulcer on sun-damaged skin/lower lip/ear or chronic venous ulcer (Marjolin's ulcer) with metastatic potential—excise with 4–6 mm margins.
15	Which Adolescent, Pregnant, and Older Adult vaccines are funded on the Australian National Immunisation Program (NIP)?	Adolescents (Year 7 / age 12–13): Single-dose HPV (Gardasil 9) and dTpa booster; Year 10 (age 14–16): Meningococcal ACWY. Pregnant women (every pregnancy): Pertussis (dTpa between 20 and 32 weeks gestation), Influenza (any trimester), and RSV vaccine (Abrysvo at 28–36 weeks). Older Adults: Shingles (2-dose recombinant Shingrix vaccine funded from age 65, and from age 50 for Indigenous Australians), Pneumococcal (13vPCV at age ≥70, or ≥50 for Indigenous adults + 23vPPV), and Annual Influenza (≥65 yrs and all Indigenous people ≥6 months).
16	In Australian Rural & Remote Occupational/Zoonotic Infections (AMC CAT MCQ), distinguish Q Fever (Coxiella burnetii), Leptospirosis, Ross River Virus, and Hendra Virus.	Q Fever (Coxiella burnetii): inhaled aerosols from placental tissues/birth fluids/dust of cattle, sheep, and goats (abattoir workers, shearers, farmers, vets)—causes abrupt high fever, severe retro-orbital headache, myalgia, granulomatous hepatitis (doughnut granulomas), atypical pneumonia, and culture-negative endocarditis; treat with Oral Doxycycline 100 mg BD for 14 days; prevent with Q-Vax vaccine (requires mandatory pre-vaccination serum antibody AND intradermal skin testing to prevent severe hypersensitivity reactions in previously exposed individuals!). Leptospirosis (banana/dairy/cane workers in QLD): fever, conjunctival suffusion, calf tenderness, jaundice/AKI (Weil's disease)—treat with Doxycycline or Benzylpenicillin. Ross River & Barmah Forest viruses (mosquito-borne alphaviruses): fever, maculopapular rash, and debilitating symmetrical polyarthralgia/arthritis lasting weeks–months (supportive NSAID therapy).
17	According to Royal Children's Hospital (RCH) Melbourne guidelines, what features distinguish a Simple Febrile Convulsion from a Complex Febrile Convulsion in a child aged 6 months to 6 years?	Simple Febrile Convulsion (all 3 required): 1) Generalized tonic-clonic seizure (no focal features), 2) Duration <15 minutes, and 3) Does NOT recur within 24 hours or within the same febrile illness, with full recovery within 1 hour. Management: Reassure parents (1 in 3 risk of recurrence in future fevers, ~1–2% risk of epilepsy—barely above general population), identify source of fever, do NOT perform routine LP/EEG/neuroimaging for a simple febrile seizure unless meningitis signs are present (note: paracetamol/ibuprofen improve comfort but do NOT prevent febrile seizures).
18	In Australian Emergency Medicine (ANZCOR Basic & Advanced Life Support), what is the DRSABCD action plan and the compression-to-ventilation ratio for adults, children, and neonates?	DRSABCD: Danger, Response, Send for help (call 000), Airway, Breathing, CPR (30 compressions : 2 breaths at 100–120/min, depth ~5 cm or 1/3 chest depth), Defibrillation. Under ANZCOR guidelines, the 30:2 compression-to-ventilation ratio applies to ALL adults, children, and infants (for both single and two rescuers, except in Newborn resuscitation at birth where the ratio is 3 compressions : 1 ventilation at 90 compressions + 30 breaths = 120 events/minute if HR <60 bpm despite 30s of effective positive-pressure ventilation).
19	In Australian Indigenous Health ('Closing the Gap'), what is the MBS Item 715 Health Check, and which conditions have disproportionately higher prevalence in Aboriginal and Torres Strait Islander peoples?	MBS Item 715 is an annual Medicare-funded comprehensive preventive health assessment available specifically to Aboriginal and Torres Strait Islander peoples of all ages. Key high-burden conditions tested on AMC CAT MCQ: 1) Chronic Suppurative Otitis Media (CSOM—painless persistent purulent ear discharge >2–6 weeks through a perforated tympanic membrane causing conductive deafness and speech delay; treat with ear cleaning/dry mopping + topical Ciprofloxacin ear drops, NEVER aminoglycoside drops with a perforation), 2) Trachoma (Chlamydia trachomatis serovars A–C—'SAFE' strategy: Surgery for trichiasis, Oral Azithromycin single dose, Facial cleanliness, Environmental improvement), 3) Acute Rheumatic Fever / RHD, 4) Post-Streptococcal Glomerulonephritis & Scabies/Impetigo, 5) Early-onset Type 2 Diabetes, CVD, and CKD.
20	In Australian Orthopaedic / Sports Medicine, how do you clinically diagnose an Anterior Cruciate Ligament (ACL) Tear vs. Meniscal Tear vs. Achilles Tendon Rupture?	ACL Tear: non-contact pivoting/deceleration injury with an audible 'pop', rapid tense haemarthrosis (swelling within 1–2 hours), and positive Lachman Test (most sensitive) and Anterior Drawer test. Meniscal Tear: twisting injury on a flexed weight-bearing knee, delayed joint effusion (12–24h), joint-line tenderness, mechanical locking/catching, and positive McMurray's or Thessaly's test. Achilles Tendon Rupture: sudden pain in posterior ankle feeling like being 'kicked or shot in the back of the leg', inability to stand on tiptoes, palpable gap in tendon, and positive Simmonds-Thompson calf squeeze test (absent plantarflexion when squeezing the calf).
21	In Ophthalmology on the AMC CAT MCQ, distinguish Central Retinal Artery Occlusion (CRAO), Central Retinal Vein Occlusion (CRVO), Retinal Detachment, and Wet vs. Dry Age-Related Macular Degeneration (AMD).	CRAO: sudden painless unilateral profound vision loss, relative afferent pupillary defect (RAPD), pale retina with 'cherry-red spot' at the fovea (ophthalmic emergency—ocular massage, carbogen/IOP lowering, stroke workup for carotid emboli/AF/GCA). CRVO: painless sudden/subacute vision loss with 'blood and thunder' fundus (diffuse retinal haemorrhages, dilated tortuous veins, cotton-wool spots; linked to hypertension, diabetes, glaucoma). Retinal Detachment: painless flashes of light (photopsia), shower of floaters, and a 'curtain/shadow' coming across the visual field (urgent vitreoretinal surgery). AMD: loss of central vision with metamorphopsia (straight lines appear wavy on Amsler grid); Dry AMD = drusen & geographic atrophy; Wet (neovascular) AMD = choroidal neovascularization & subretinal haemorrhage—treat urgently with intravitreal anti-VEGF injections (ranibizumab/aflibercept).
22	In Eating Disorders (RANZCP guidelines), what are the diagnostic features of Anorexia Nervosa vs. Bulimia Nervosa, and what is the Refeeding Syndrome electrolyte hallmark?	Anorexia Nervosa: restriction of energy intake leading to significantly low body weight (BMI <18.5 kg/m², severe <15), intense fear of gaining weight, body image disturbance, bradycardia (<50 bpm), hypotension, hypothermia, lanugo hair, and secondary hypothalamic amenorrhoea/osteoporosis. Bulimia Nervosa: recurrent binge eating + compensatory purging (vomiting, laxatives, diuretics) at least once weekly for 3 months with NORMAL or overweight BMI, Russell's sign (knuckle calluses), parotid gland enlargement, dental enamel erosion, and hypokalaemic hypochloraemic metabolic alkalosis. Refeeding Syndrome (triggered by rapid carbohydrate reintroduction driving insulin surge): hallmark is severe HYPOPHOSPHATAEMIA (plus hypokalaemia, hypomagnesaemia, thiamine depletion, and fatal cardiac arrhythmias/heart failure).
23	In Australian Palliative Care & Aged Care, what is the difference between an Advance Care Directive (ACD) and an Enduring Guardian / Medical Treatment Decision Maker?	An Advance Care Directive (ACD) is a legally binding document completed by a competent adult recording their specific values and binding refusals of future medical treatment if they later lose decision-making capacity. An Enduring Guardian (NSW/TAS/WA) / Medical Treatment Decision Maker (VIC) / Enduring Power of Attorney for Personal/Health Matters (QLD/ACT) is a person appointed by the adult while capacitous to make health and lifestyle decisions once capacity is lost (distinct from a financial Enduring Power of Attorney).
24	According to the Australian National Immunisation Program (NIP) Schedule, list the childhood vaccines given at Birth, 2 months (from 6 weeks), 4 months, 6 months, 12 months, 18 months, and 4 years.	Birth: Hepatitis B (monovalent). 2 months & 4 months: DTPa-hepB-IPV-Hib (6-in-1 hexavalent), Pneumococcal (13vPCV), and Oral Rotavirus. 6 months: DTPa-hepB-IPV-Hib (3rd dose; plus 3rd dose of 13vPCV and Influenza annually from 6 months for Aboriginal & Torres Strait Islander children and medically at-risk children). 12 months: MMR (Measles-Mumps-Rubella), Meningococcal ACWY (MenACWY), and 13vPCV booster. 18 months: MMRV (Measles-Mumps-Rubella-Varicella), DTPa booster, and Hib booster (plus Hepatitis A & Pneumococcal boosters in Indigenous children in NT/QLD/SA/WA). 4 years: DTPa-IPV (quadrivalent).
25	In Australian Geriatrics (AMC CAT MCQ), how do you differentiate Delirium, Dementia, and Pseudodementia (Depression in the elderly), and how is Acute Delirium managed?	Delirium (CAM criteria): Acute onset (hours to days) and fluctuating course, INATTENTION (hallmark—inability to recite months backwards), plus either disorganized thinking or altered level of consciousness; precipitated by 'PINCH ME' (Pain, Infection—UTI/pneumonia, Nutrition/dehydration, Constipation/urinary retention, Hypoxia/hypoglycaemia, Medications—anticholinergics/opioids/benzodiazepines, Environment). Dementia: Insidious onset (months to years), clear consciousness and normal attention until late stages, progressive irreversible cortical decline (MMSE/MoCA/RUDAS—use RUDAS in culturally and linguistically diverse patients;use KICA-Cog in remote Indigenous patients). Pseudodementia: rapid onset depressive symptoms, patient emphasizes memory failures ('I don't know' responses rather than confabulating/trying hard). Manage Delirium by treating the underlying cause and non-pharmacological reorientation first; use low-dose oral Haloperidol (0.5 mg) ONLY for severe agitation posing immediate danger (NEVER haloperidol in Lewy Body or Parkinson's dementia—use Quetiapine or Lorazepam if essential).
26	According to RANZCOG guidelines, how is Prevention of Early-Onset Neonatal Group B Streptococcal (GBS) Sepsis managed in Australia?	Perform universal recto-vaginal swab screening at 35–37 weeks gestation. Administer Intrapartum IV Benzylpenicillin (3 g loading dose, then 1.5 g every 4 hours until birth; IV Cefazolin if non-severe penicillin allergy, IV Vancomycin if severe penicillin allergy) if ANY of the following apply: 1) Positive GBS swab at 35–37 weeks, 2) GBS bacteriuria during the current pregnancy, 3) Previous infant with invasive GBS disease, 4) Preterm labour <37 weeks, or 5) Intrapartum maternal fever ≥38.0°C or prolonged rupture of membranes ≥18 hours.
27	What are the major clinical syndromes of Australian Elapid Snake Envenomation (Brown, Tiger, Taipan, Death Adder, Black Snake) and the mandatory lab panel monitored every 4–6 hours?	1) Venom-Induced Consumption Coagulopathy (VICC—prothrombin activators in Brown, Tiger, and Taipan venoms consume fibrinogen: INR unrecordable/>12, aPTT high, Fibrinogen undetectable, D-dimer markedly elevated), 2) Neurotoxicity (descending flaccid paralysis starting with ptosis, diplopia, bulbar palsy, then respiratory paralysis in Tiger, Taipan, and Death Adder), 3) Myotoxicity/Rhabdomyolysis (elevated CK >1,000 U/L, myoglobinuria, hyperkalaemia in Tiger, Mulga/King Brown, and Red-Bellied Black snakes), 4) Thrombotic Microangiopathy (MAHA + thrombocytopenia + AKI). Monitor serial neuro obs, FBC (blood film for schistocytes), Coags (INR, aPTT, Fibrinogen, D-dimer), U&Es, and CK at presentation, 1h after bandage removal, and 6h, 12h, and 24h post-bite.
28	In Australian Paediatrics (RCH Melbourne Clinical Practice Guidelines), how is Acute Gastroenteritis Dehydration classified and rehydrated in children?	Mild (<3–5% weight loss: alert, moist/slightly dry mucous membranes): Oral Rehydration Solution (ORS/Hydralyte) 50 mL/kg over 4h. Moderate (5–9% weight loss: sunken eyes, lethargy, tachypnoea, reduced skin turgor, capillary refill 2–3s): Rapid Nasogastric (NG) Rehydration with ORS at 25 mL/kg/hour for 4 hours (preferred over IV in RCH guidelines!). Severe (≥10% weight loss: circulatory shock, mottled skin, capillary refill >3s, altered consciousness): Immediate IV fluid bolus of 20 mL/kg 0.9% Sodium Chloride, followed by standard maintenance + deficit replacement using 0.9% NaCl with 5% Glucose.
29	In Australian Medical Law, what is the Mature Minor principle established by the High Court of Australia in Marion's Case (Secretary, Department of Health and Community Services v JWB and SMB, 1992)?	Adopted the Gillick competence standard into Australian common law: a minor under 18 is capable of giving independent valid consent to medical treatment when they achieve sufficient maturity and intelligence to understand fully the nature and consequences of the proposed treatment. However, non-therapeutic, invasive, irreversible procedures (such as sterilization in an intellectually disabled child in Marion's Case) fall outside parental consent authority and require Family Court authorization.
30	According to RANZCOG guidelines, when is Cervical Length Screening and Progesterone vs. Cervical Cerclage indicated to prevent Preterm Birth?	Measure transvaginal ultrasound cervical length at the 18–20 week morphology scan (or from 14–16 weeks in women with prior preterm birth <34 weeks or cervical surgery like LLETZ/cone biopsy). If cervical length is ≤25 mm before 24 weeks in a singleton pregnancy: start vaginal micronized Progesterone 200 mg nightly until 36 weeks; consider Rescue/History/Ultrasound-indicated Cervical Cerclage (McDonald suture) if cervix is <10–15 mm or with history of mid-trimester painless cervical dilatation.
31	According to RANZCOG and ADIPS (Australasian Diabetes in Pregnancy Society) guidelines, how is Gestational Diabetes Mellitus (GDM) diagnosed in Australia?	Unlike Canada's 2-step approach, Australia uses a universal 1-step Fasting 2-hour 75g Oral Glucose Tolerance Test (OGTT) at 24–28 weeks gestation (and early in the 1st trimester if high risk: BMI >30, prior GDM, PCOS, ethnicity, macrosomia). GDM is diagnosed if ANY ONE value meets or exceeds the ADIPS (IADPSG) thresholds: Fasting ≥5.1 mmol/L, 1-hour ≥10.0 mmol/L, OR 2-hour ≥8.5 mmol/L.
32	In Australian Psychiatry (RANZCP guidelines), how is Postpartum Blues distinguished from Postpartum Depression and Puerperal (Postpartum) Psychosis?	Postpartum Blues (50–80% of mothers): tearfulness, mood lability, irritability peaking at Day 3–5 post-birth and resolving spontaneously within 10–14 days with reassurance/support. Postpartum Depression (10–15%, screened with Edinburgh Postnatal Depression Scale EPDS ≥13): persistent depressed mood, severe anxiety, anhedonia, guilt, impaired bonding starting within weeks to 12 months—treat with CBT + Sertraline (or Escitalopram, safe in breastfeeding). Postpartum Psychosis (1–2 per 1,000 births, strongly linked to Bipolar Disorder): Psychiatric EMERGENCY starting rapidly within Days 1–14 post-birth with delusions (often involving the baby), hallucinations, mania/delirium-like confusion, and high risk of infanticide and suicide—requires immediate inpatient Mother-Baby Unit psychiatric admission, antipsychotics/mood stabilizers, and child safety protection.