Mixed Deck — All MCCQE Topics Flashcards

A 70-year-old man presents with sudden onset painless bright red rectal bleeding causing hemodynamic instability. He has no abdominal pain. Nasogastric aspirate is bile-stained without blood. What is the most appropriate next diagnostic and therapeutic step?

Answer: CT angiography followed by interventional radiology embolization

Hemodynamically significant lower GI bleeding in an elderly patient warrants CT angiography (if actively bleeding at ≥0.3 mL/min) to localize the source, followed by angioembolization.

A patient with a sulfonamide allergy requires prophylaxis for Pneumocystis jirovecii pneumonia. Which alternative is most appropriate?

Answer: Atovaquone

Atovaquone is a preferred TMP-SMX alternative for PCP prophylaxis in patients with sulfonamide allergy who cannot use dapsone due to its own adverse effects or G6PD deficiency.

A 55-year-old man presents post-thyroidectomy with stridor, voice hoarseness, and respiratory distress 2 hours after surgery. Neck is swelling. What is the immediate bedside intervention?

Answer: Bedside wound opening to evacuate hematoma

Post-thyroidectomy neck hematoma causing airway compromise requires immediate bedside wound opening to decompress the hematoma before definitive airway management or return to OR.

How does the MCC handle the 'standard error of measurement' when making pass/fail decisions near the cut score on MCCQE Part I?

Answer: The SEM is not considered — the cut score is applied strictly

The MCC applies the cut score strictly, as the passing standard is set to reflect minimum competence and is not adjusted for individual SEM fluctuations.

What type of feedback do candidates receive after completing MCCQE Part I?

Answer: Scaled total score and performance profiles by discipline area

Candidates receive their scaled total score along with performance profiles showing relative strengths and weaknesses across discipline areas.

What percentage of MCCQE Part I content is typically derived from clinical medicine disciplines (as opposed to basic sciences)?

Answer: Greater than 80%

The MCCQE Part I is predominantly clinically oriented, with over 80% of content focused on clinical medicine rather than basic science.

How many attempts are Canadian medical graduates typically permitted for the MCCQE Part II before additional restrictions apply?

Answer: A maximum of 3 attempts before requiring special permission

After a set number of unsuccessful attempts (generally 3), candidates typically require special review or permission to attempt again.

How does the MCCQE Part I scoring handle the written component (CDM cases) relative to the multiple-choice component?

Answer: CDM and MCQ scores are combined into a single total score

The MCCQE Part I combines scores from both the MCQ and CDM components into one overall score used for pass/fail determination.

Which antifungal drug works by inhibiting 1,3-beta-D-glucan synthase, disrupting the fungal cell wall?

Answer: Caspofungin

Caspofungin is an echinocandin that inhibits 1,3-beta-D-glucan synthase, reducing glucan polymer synthesis in the fungal cell wall.

A 55-year-old woman on phenelzine for depression eats aged cheese and develops severe hypertensive crisis. What is the mechanism?

Answer: Tyramine-induced norepinephrine surge due to MAO inhibition

MAO inhibitors block tyramine breakdown; dietary tyramine triggers massive norepinephrine release from sympathetic terminals, causing hypertensive crisis.

Researchers wish to investigate a potential link between a rare form of cancer and exposure to a specific industrial solvent. They identify 100 individuals with this cancer and a comparison group of 200 individuals without the cancer, matched for age and sex. They then proceed to collect detailed occupational histories from all participants to determine past exposure to the solvent. Which study design does this best describe?

Answer: Case-Control Study

This is a case-control study. The design starts by identifying individuals with the disease (cases) and a group without the disease (controls), and then looks back retrospectively to compare the frequency of past exposure to a risk factor. This approach is particularly efficient for studying rare diseases.

Which of the following documents does the MCC require to verify graduation from a medical school for MCCQE Part I eligibility?

Answer: Official medical school transcript sent directly to the MCC

The MCC requires official transcripts or graduation verification sent directly from the medical institution to confirm eligibility.

In Bradford Hill's criteria, which criterion addresses the plausibility of the cause-effect relationship based on current biological knowledge?

Answer: Biological plausibility

Biological plausibility requires that the association makes sense given existing biological and medical knowledge.

For MCCQE Part II eligibility, what is the minimum number of months of accredited postgraduate training currently required by the MCC?

Answer: 12 months

The MCC requires a minimum of 12 months of accredited postgraduate medical training to be eligible for MCCQE Part II.

A research participant enrolled in a clinical trial develops an unexpected serious adverse event. What is the researcher's immediate obligation?

Answer: Immediately report the event to the Research Ethics Board and consider stopping the trial

Serious adverse events must be promptly reported to the REB; participant safety takes precedence over data integrity.

A physician has a personal moral objection to prescribing medical assistance in dying (MAID). What is their legal obligation in Canada?

Answer: They must provide an effective referral to a willing provider

Under Bill C-14 and professional guidelines, conscientious objectors must provide timely and effective referrals so patients can access MAID.

A 75-year-old man presents with fluctuating cognition, visual hallucinations of animals and people, and parkinsonian features. He is very sensitive to haloperidol. What is the most likely diagnosis?

Answer: Lewy body dementia

Lewy body dementia is characterized by fluctuating cognition, recurrent visual hallucinations, parkinsonism, and severe neuroleptic sensitivity, distinguishing it from other dementias.

A candidate passes MCCQE Part I but scores significantly below the national mean. What practical implication does this sub-mean pass have?

Answer: There is no formal implication; a passing score is sufficient regardless of distance from the mean

A pass is a pass under MCC criteria; the MCC does not impose additional requirements based on how far above or below the mean a passing score falls.

A 65-year-old patient on fluoroquinolone therapy develops sudden Achilles tendon rupture. Which mechanism underlies this adverse effect?

Answer: Fluoroquinolones chelate magnesium in collagen-producing cells, disrupting matrix metalloprotease regulation

Fluoroquinolones chelate divalent cations like magnesium in tenocytes, disrupting matrix metalloprotease homeostasis and degrading collagen in tendons.

A capable adult patient refuses a blood transfusion on religious grounds despite life-threatening hemorrhage. What is the physician's ethical obligation?

Answer: Respect the refusal and provide alternative management

Capable adults have the right to refuse any treatment, including life-saving interventions, and physicians must respect this autonomy.