Authentic Medical Council of Canada Certification Exam MCCQE Questions Answers

An empty uterus with β-hCG > 1500–2000 IU/L raises concern for a pregnancy of unknown location (PUL), including the possibility of ectopic pregnancy. However, the patient is hemodynamically stable and asymptomatic. In such cases, the best initial step is to repeat serum β-hCG in 48 hours to assess the rise or fall of hCG levels.

Toronto Notes 2023 – Obstetrics, " First Trimester Bleeding " :

“If β-hCG > 1500 IU/L and no intrauterine pregnancy is visualized on ultrasound, repeat β-hCG in 48 hours to determine rise or decline. A suboptimal rise (less than 66%) suggests ectopic pregnancy.”

MCCQE1 Objectives (Obstetrics > 79-1: Early Pregnancy Complications):

“In a patient with early pregnancy bleeding, the candidate must interpret quantitative β-hCG trends to distinguish ectopic pregnancy, miscarriage, or viable intrauterine pregnancy.”

Immediate administration of methotrexate or invasive procedures such as D & C or laparoscopy are not appropriate until further diagnostic clarification is obtained.

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According to Canadian medical ethics and legal standards, physicians must communicate diagnosis and treatment options directly to the patient, unless the patient has explicitly waived their right to know or delegated decision-making authority. The patient ' s autonomy is paramount.

Toronto Notes 2023 – Ethical, Legal, and Organizational Medicine, " Truth-Telling " Section:

“Physicians are obligated to disclose relevant health information to patients unless the patient has clearly indicated a desire not to be informed. Family members do not have the authority to request that information be withheld from a competent adult.”

MCCQE1 Objectives (ELOM > Ethical Issues > Medical Ethics):

“The candidate must be able to apply the principles of patient autonomy… This includes full disclosure of diagnosis, prognosis, and treatment options unless waived by the patient.”

Booking an immediate appointment (C) allows you to assess her decision-making capacity and proceed with informed discussion. The other options either bypass the patient (A, B, E) or provide misleading/incomplete information (A, D), which violates ethical and legal obligations.

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This presentation is classic for Zenker diverticulum, characterized by progressive dysphagia, regurgitation of undigested food, coughing, and halitosis due to food retention in a pharyngoesophageal pouch. Symptoms are chronic and episodic, often involving regurgitation hours after eating. MCCQE objectives emphasize selecting the safest and most appropriate diagnostic test. The best initial test is a barium swallow (contrast esophagram), which clearly visualizes the posterior outpouching above the upper esophageal sphincter.

Endoscopy is not the first step because there is a risk of perforation if a large diverticulum is present. pH monitoring and PPI trials are used for gastroesophageal reflux disease, which does not explain regurgitation of undigested food and halitosis. CT chest is unnecessary for diagnosis.

Therefore, a barium swallow is the safest and most informative investigation to confirm suspected Zenker diverticulum before considering surgical or endoscopic management.