This patient is currently non-communicative and therefore likely lacks decision-making capacity. MCCQE ethics objectives emphasize that when a patient’s prior capable wishes are clearly known, clinicians must follow those expressed values and directives. He previously stated he did not want life-prolonging measures; escalation (hospital transfer) and potentially curative treatment aimed primarily at prolonging life would conflict with that directive. The immediate best step is to provide comfort-focused care, addressing symptoms such as fever and distress with antipyretics and other palliative measures.

Calling family to “consider antibiotics” risks substituting others’ preferences for the patient’s known wishes; substitute decision makers are meant to apply the patient’s prior expressed wishes, not override them. Starting antibiotics while waiting to contact family similarly risks initiating life-prolonging therapy inconsistent with the directive. Catheter change may be clinically useful in catheter-associated infection, but the question frames a clear limit on life-prolonging interventions; symptom relief is the priority. Ongoing care should include reassessment of comfort, clear documentation of goals of care, and communication with family about the patient’s previously stated wishes and the plan for palliative management.

The most appropriate next step is to explore her concerns and provide counselling regarding labour and pain management options . MCCQE objectives emphasize patient-centered care, informed decision-making, and respect for autonomy while ensuring that patients receive appropriate information about risks and benefits. This patient is in active labour at term with ruptured membranes and expresses fear about vaginal delivery. The immediate priority is to assess the source of her fear (pain, complications, prior trauma, misinformation) and provide education about available analgesia options (e.g., epidural, intravenous opioids, nonpharmacologic methods) and the relative risks and benefits of cesarean versus vaginal delivery.

Automatically arranging a cesarean without discussion is inappropriate, particularly in a primary care setting without clear medical indication. Conversely, refusing cesarean outright is paternalistic and fails to address her concerns. Analgesia may be appropriate but should follow exploration of her preferences. Therefore, empathetic discussion and shared decision-making are the best initial approach.

Dog bites from animals of unknown rabies status, especially from endemic regions and in patients with uncertain immunization status, require immediate post-exposure prophylaxis (PEP) including both rabies immunoglobulin and vaccine. The decision is urgent given the fatal nature of rabies.

Toronto Notes 2023 – Infectious Diseases, “Rabies Exposure”:

“Rabies PEP is indicated for bites from animals with unknown vaccination status or those showing abnormal behavior, particularly in endemic regions. PEP includes both vaccine and immunoglobulin.”

MCCQE1 Objectives (Public Health > 64-1: Rabies and Animal Bites):

“Candidates must recognize indications for rabies post-exposure prophylaxis.”

Ciprofloxacin (C) is not the antibiotic of choice (amoxicillin-clavulanate is preferred). Hydrogen peroxide (E) can be cytotoxic. Debridement (B) and CK (D) are not immediate priorities here.

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In Canada, a minor may consent to medical care if the physician believes they have the capacity to understand the nature, benefits, and risks. This is known as the “mature minor doctrine.” Capacity is based on understanding, not age.

Toronto Notes 2023 – ELOM, “Consent and Capacity” Section:

“A minor may consent to treatment if they demonstrate sufficient maturity and understanding. It is the physician’s responsibility to assess capacity prior to prescribing.”

MCCQE1 Objectives (ELOM > 99-3: Consent and Confidentiality):

“Candidates must assess the patient’s ability to understand and make informed decisions, regardless of age.”

Prescribing without assessment (B) is premature. Reporting to child services (A) is only necessary if there are signs of abuse or coercion. Parental involvement (C) is not mandatory. Refusal based on age (E) contradicts legal and ethical practice.

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The patient is obese (BMI 35), has type 2 diabetes, and shows a hepatocellular pattern of transaminitis (elevated ALT > AST). These are typical features of nonalcoholic steatohepatitis (NASH), the inflammatory subtype of nonalcoholic fatty liver disease (NAFLD).

Toronto Notes 2023 – Gastroenterology, NAFLD and NASH:

“NASH should be suspected in patients with metabolic syndrome, obesity, and type 2 diabetes, especially with elevated transaminases and normal bilirubin or INR.”

MCCQE1 Objectives – Internal Medicine > Hepatology:

“Candidates should recognize the clinical profile of NAFLD/NASH, particularly in asymptomatic patients with metabolic risk factors and isolated liver enzyme elevations.”

Acute hepatitis B (A) typically has higher ALT and symptoms. Pancreatic carcinoma (B) affects biliary enzymes or bilirubin. Metformin (D) does not elevate liver enzymes. HCC (E) would often present with systemic or localized symptoms and abnormal imaging.

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The most likely diagnosis is organic solvent intoxication because the episodes are recurrent, acute, and specifically occur at work in a car mechanic. MCCQE objectives in occupational and environmental medicine emphasize recognizing workplace exposures that cause transient neurologic symptoms. Organic solvents (e.g., toluene, xylene, gasoline vapors, degreasers) can produce acute CNS effects such as dizziness, imbalance/ataxia, nausea, lightheadedness, and mild confusion or disorientation, often with a normal routine exam and basic labs once exposure ceases. The clear temporal relationship to the workplace and repeated similar episodes strongly supports an exposure-related cause. Lead toxicity is typically subacute/chronic, presenting with abdominal pain, constipation, neuropathy (wrist/foot drop), cognitive changes, anemia, and basophilic stippling—rather than brief episodic disequilibrium. A cerebellar tumor would cause progressive, persistent symptoms and focal neurologic findings. Ear infection–related vertigo would not reliably recur only at work and usually has ear symptoms or exam findings. Alcohol intoxication is less consistent with a repeated workplace-only pattern without corroborating signs.

This child presents with “red flag” features for malignancy: a firm, fixed, nontender supraclavicular lymph node > 2 cm in size, with associated hepatosplenomegaly and night sweats. These features are most concerning for lymphoma.

Toronto Notes 2023 – Pediatrics, “Lymphadenopathy in Children”:

“Malignant lymphadenopathy tends to be firm, fixed, painless, and located in supraclavicular areas. Systemic signs (fever, weight loss, hepatosplenomegaly, night sweats) are concerning for lymphoma.”

MCCQE1 Objectives (Pediatrics > 78-3: Hematology/Oncology):

“Candidates should differentiate between benign and malignant lymphadenopathy and recognize features suggestive of lymphoma.”

Cat-scratch disease (B) is usually tender and associated with cat exposure. Kawasaki disease (C) presents with fever and mucocutaneous findings. Acute bacterial lymphadenitis (D) is painful, warm, and rapid in onset. Viral lymphadenopathy (E) is often bilateral, small, and tender.

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This patient with known metastatic prostate cancer presents with acute back pain, bilateral lower limb weakness, decreased reflexes, and new fecal incontinence—classic red flags for malignant spinal cord compression . MCCQE objectives emphasize that this is an oncologic emergency requiring immediate intervention to prevent irreversible neurologic damage.

The first step is prompt administration of high-dose parenteral corticosteroids (e.g., dexamethasone) to reduce vasogenic edema around the spinal cord and preserve neurologic function. Steroids should be given immediately upon suspicion, even before confirmatory imaging. Urgent MRI of the spine and consultation with oncology, radiation oncology, and/or neurosurgery follow for definitive management (radiotherapy or surgical decompression depending on stability and prognosis).

Bed rest and analgesia alone are inadequate. A stellate ganglion block is unrelated. Although radiotherapy or surgery will likely be required, steroids must be administered first without delay. Early treatment significantly improves the likelihood of maintaining ambulation and continence.

In Canada and in most jurisdictions internationally, physicians have a professional and in some cases legal obligation to provide emergency assistance. Documentation should be done in your own records afterward. Aviation laws and Good Samaritan protections offer liability coverage for health professionals acting in good faith.

Toronto Notes 2023 – ELOM, “Physician Obligations and Medical-Legal Responsibility”:

“Physicians should respond to in-flight or public emergencies when capable. Documentation should be completed after the event, and liability is protected under Good Samaritan laws.”

MCCQE1 Objectives (ELOM > Professionalism > 90-1):

“Candidates must demonstrate appropriate professional behavior, including willingness to assist in emergencies and understanding of legal protections.”

Avoiding assistance (A), or placing conditional barriers (D), is unethical and inappropriate.

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