COMSAE PHASE 3 FORM 307 QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A | LATEST EXAM UPDATE 2026/2027.
Core Domains:
Internal Medicine
Surgery and Surgical Subspecialties
Obstetrics and Gynecology
Pediatrics
Psychiatry and Behavioral Health
Emergency Medicine and Critical Care
Preventive Medicine and Public Health
Medical Ethics and Professionalism
Healthcare Administration and Quality Improvement
Introduction
This comprehensive assessment is designed to rigorously evaluate the knowledge, clinical reasoning, and decision-
making skills expected of a physician at the conclusion of the third year of post-graduate training. The exam is
structured to mirror the complexity and breadth of the COMSAE Phase 3, focusing on the application of
foundational medical knowledge in high-stakes, real-world clinical scenarios. It emphasizes the synthesis of
information across multiple disciplines to formulate accurate diagnoses, develop safe and effective management
plans, and navigate the complexities of the healthcare system. The questions are presented in a multiple-choice
format with a strong emphasis on critical thinking, ethical considerations, and evidence-based practice, preparing
candidates for the challenges of independent practice.
,SECTION ONE: QUESTIONS 1-100
Question 1
A 72-year-old male with a history of hypertension and type 2 diabetes mellitus presents to the emergency
department with acute onset of severe, tearing chest pain that radiates to his back. His blood pressure is
180/110 mmHg in the right arm and 130/70 mmHg in the left arm. Which of the following is the most
appropriate immediate next step in management?
A. Administer intravenous beta-blockers and obtain a STAT contrast-enhanced CT angiography of the chest,
abdomen, and pelvis.
B. Administer intravenous tissue plasminogen activator (tPA) for suspected myocardial infarction.
C. Perform a bedside transthoracic echocardiogram to assess for pericardial effusion.
D. Administer high-dose intravenous corticosteroids for suspected pericarditis.
🟢 A. Administer intravenous beta-blockers and obtain a STAT contrast-enhanced CT angiography of the chest,
abdomen, and pelvis.
🔴 RATIONALE: The patient's presentation is classic for an acute aortic dissection (tearing chest pain radiating
to the back, pulse deficit). The immediate priority is to reduce the shear force on the aortic wall by lowering
heart rate and blood pressure with beta-blockers (e.g., esmolol), followed by definitive imaging with CT
angiography to confirm the diagnosis and guide surgical or medical management. tPA is contraindicated.
Echocardiography may be useful but is not the definitive diagnostic test and should not delay the primary
imaging modality. Corticosteroids are not indicated.
Question 2
A 45-year-old woman presents with a 3-week history of progressive fatigue, low-grade fever, and pain in her
hands and wrists. On physical examination, you note tenderness and swelling of the proximal interphalangeal
(PIP) and metacarpophalangeal (MCP) joints bilaterally. Laboratory tests reveal a mild anemia, elevated ESR, and
a positive rheumatoid factor. Which of the following is the most appropriate initial pharmacologic treatment?
,A. Methotrexate (MTX) therapy.
B. High-dose oral corticosteroids as monotherapy.
C. A nonsteroidal anti-inflammatory drug (NSAID) as needed for symptom relief and to delay disease
progression.
D. Hydroxychloroquine (HCQ) as the sole disease-modifying antirheumatic drug (DMARD).
🟢 A. Methotrexate (MTX) therapy.
🔴 RATIONALE: This patient has a classic presentation of rheumatoid arthritis (RA) with symmetric polyarthritis.
The standard of care for active RA is to initiate a conventional synthetic DMARD, with methotrexate being the
most commonly used first-line agent. It is more effective than hydroxychloroquine alone and is preferred over
systemic corticosteroids, which are not recommended as monotherapy due to side effects. NSAIDs are for
symptom management only and do not modify disease progression.
Question 3
A 32-year-old woman at 28 weeks gestation presents with a 2-day history of a severe, persistent headache,
visual disturbances (blurred vision and "flashing lights"), and epigastric pain. Her blood pressure is 165/105
mmHg, and urine dipstick reveals 2+ protein. What is the most appropriate next step in management?
A. Admit to the hospital for immediate induction of labor.
B. Prescribe oral labetalol for outpatient management of hypertension.
C. Administer a loading dose of intravenous magnesium sulfate and initiate antihypertensive therapy with
labetalol.
D. Discharge home with strict instructions for bed rest and a low-sodium diet.
🟢 C. Administer a loading dose of intravenous magnesium sulfate and initiate antihypertensive therapy with
labetalol.
🔴 RATIONALE: The patient has severe preeclampsia (blood pressure ≥160/110 mmHg with end-organ
symptoms) at 28 weeks. The priority is to prevent seizures with magnesium sulfate and control severe
, hypertension (e.g., with labetalol). Admission is required, but induction is not the immediate first step.
Outpatient management or bed rest is inappropriate for this severity of illness.
Question 4
A 6-year-old child is brought to the clinic by his mother due to a new onset of a non-blanching, petechial rash
on his lower extremities. He reports no other symptoms and appears well. His vital signs are normal. The mother
is very anxious. What is the most appropriate initial management for this child?
A. Admit the child to the hospital for a septic workup and intravenous antibiotics.
B. Reassure the mother and diagnose the condition as benign, self-limiting thrombocytopenia.
C. Obtain a complete blood count (CBC) with platelet count and peripheral smear.
D. Prescribe oral corticosteroids to treat the underlying vasculitis.
🟢 C. Obtain a complete blood count (CBC) with platelet count and peripheral smear.
🔴 RATIONALE: In a well-appearing child with a new petechial rash, the primary concern is to differentiate
between benign conditions like Henoch-Schönlein purpura (HSP) and more serious causes like immune
thrombocytopenic purpura (ITP) or leukemia. The most appropriate initial step is to obtain a CBC to assess
platelet count and rule out thrombocytopenia or other hematologic abnormalities. Admission or antibiotics are
not indicated without signs of sepsis. Corticosteroids are not indicated for initial management without a
diagnosis.
Question 5
A 55-year-old male with a history of chronic alcoholism presents with confusion, ataxia, and ophthalmoplegia.
Which of the following is the most likely underlying diagnosis, and what is the most critical initial treatment?
A. Wernicke's encephalopathy; treat with intravenous thiamine.
B. Hepatic encephalopathy; treat with lactulose and rifaximin.
C. Cerebellar degeneration; treat with physical therapy and vitamin E.
D. Subdural hematoma; treat with neurosurgical consultation for evacuation.
RATIONALES 2026 Q&A | LATEST EXAM UPDATE 2026/2027.
Core Domains:
Internal Medicine
Surgery and Surgical Subspecialties
Obstetrics and Gynecology
Pediatrics
Psychiatry and Behavioral Health
Emergency Medicine and Critical Care
Preventive Medicine and Public Health
Medical Ethics and Professionalism
Healthcare Administration and Quality Improvement
Introduction
This comprehensive assessment is designed to rigorously evaluate the knowledge, clinical reasoning, and decision-
making skills expected of a physician at the conclusion of the third year of post-graduate training. The exam is
structured to mirror the complexity and breadth of the COMSAE Phase 3, focusing on the application of
foundational medical knowledge in high-stakes, real-world clinical scenarios. It emphasizes the synthesis of
information across multiple disciplines to formulate accurate diagnoses, develop safe and effective management
plans, and navigate the complexities of the healthcare system. The questions are presented in a multiple-choice
format with a strong emphasis on critical thinking, ethical considerations, and evidence-based practice, preparing
candidates for the challenges of independent practice.
,SECTION ONE: QUESTIONS 1-100
Question 1
A 72-year-old male with a history of hypertension and type 2 diabetes mellitus presents to the emergency
department with acute onset of severe, tearing chest pain that radiates to his back. His blood pressure is
180/110 mmHg in the right arm and 130/70 mmHg in the left arm. Which of the following is the most
appropriate immediate next step in management?
A. Administer intravenous beta-blockers and obtain a STAT contrast-enhanced CT angiography of the chest,
abdomen, and pelvis.
B. Administer intravenous tissue plasminogen activator (tPA) for suspected myocardial infarction.
C. Perform a bedside transthoracic echocardiogram to assess for pericardial effusion.
D. Administer high-dose intravenous corticosteroids for suspected pericarditis.
🟢 A. Administer intravenous beta-blockers and obtain a STAT contrast-enhanced CT angiography of the chest,
abdomen, and pelvis.
🔴 RATIONALE: The patient's presentation is classic for an acute aortic dissection (tearing chest pain radiating
to the back, pulse deficit). The immediate priority is to reduce the shear force on the aortic wall by lowering
heart rate and blood pressure with beta-blockers (e.g., esmolol), followed by definitive imaging with CT
angiography to confirm the diagnosis and guide surgical or medical management. tPA is contraindicated.
Echocardiography may be useful but is not the definitive diagnostic test and should not delay the primary
imaging modality. Corticosteroids are not indicated.
Question 2
A 45-year-old woman presents with a 3-week history of progressive fatigue, low-grade fever, and pain in her
hands and wrists. On physical examination, you note tenderness and swelling of the proximal interphalangeal
(PIP) and metacarpophalangeal (MCP) joints bilaterally. Laboratory tests reveal a mild anemia, elevated ESR, and
a positive rheumatoid factor. Which of the following is the most appropriate initial pharmacologic treatment?
,A. Methotrexate (MTX) therapy.
B. High-dose oral corticosteroids as monotherapy.
C. A nonsteroidal anti-inflammatory drug (NSAID) as needed for symptom relief and to delay disease
progression.
D. Hydroxychloroquine (HCQ) as the sole disease-modifying antirheumatic drug (DMARD).
🟢 A. Methotrexate (MTX) therapy.
🔴 RATIONALE: This patient has a classic presentation of rheumatoid arthritis (RA) with symmetric polyarthritis.
The standard of care for active RA is to initiate a conventional synthetic DMARD, with methotrexate being the
most commonly used first-line agent. It is more effective than hydroxychloroquine alone and is preferred over
systemic corticosteroids, which are not recommended as monotherapy due to side effects. NSAIDs are for
symptom management only and do not modify disease progression.
Question 3
A 32-year-old woman at 28 weeks gestation presents with a 2-day history of a severe, persistent headache,
visual disturbances (blurred vision and "flashing lights"), and epigastric pain. Her blood pressure is 165/105
mmHg, and urine dipstick reveals 2+ protein. What is the most appropriate next step in management?
A. Admit to the hospital for immediate induction of labor.
B. Prescribe oral labetalol for outpatient management of hypertension.
C. Administer a loading dose of intravenous magnesium sulfate and initiate antihypertensive therapy with
labetalol.
D. Discharge home with strict instructions for bed rest and a low-sodium diet.
🟢 C. Administer a loading dose of intravenous magnesium sulfate and initiate antihypertensive therapy with
labetalol.
🔴 RATIONALE: The patient has severe preeclampsia (blood pressure ≥160/110 mmHg with end-organ
symptoms) at 28 weeks. The priority is to prevent seizures with magnesium sulfate and control severe
, hypertension (e.g., with labetalol). Admission is required, but induction is not the immediate first step.
Outpatient management or bed rest is inappropriate for this severity of illness.
Question 4
A 6-year-old child is brought to the clinic by his mother due to a new onset of a non-blanching, petechial rash
on his lower extremities. He reports no other symptoms and appears well. His vital signs are normal. The mother
is very anxious. What is the most appropriate initial management for this child?
A. Admit the child to the hospital for a septic workup and intravenous antibiotics.
B. Reassure the mother and diagnose the condition as benign, self-limiting thrombocytopenia.
C. Obtain a complete blood count (CBC) with platelet count and peripheral smear.
D. Prescribe oral corticosteroids to treat the underlying vasculitis.
🟢 C. Obtain a complete blood count (CBC) with platelet count and peripheral smear.
🔴 RATIONALE: In a well-appearing child with a new petechial rash, the primary concern is to differentiate
between benign conditions like Henoch-Schönlein purpura (HSP) and more serious causes like immune
thrombocytopenic purpura (ITP) or leukemia. The most appropriate initial step is to obtain a CBC to assess
platelet count and rule out thrombocytopenia or other hematologic abnormalities. Admission or antibiotics are
not indicated without signs of sepsis. Corticosteroids are not indicated for initial management without a
diagnosis.
Question 5
A 55-year-old male with a history of chronic alcoholism presents with confusion, ataxia, and ophthalmoplegia.
Which of the following is the most likely underlying diagnosis, and what is the most critical initial treatment?
A. Wernicke's encephalopathy; treat with intravenous thiamine.
B. Hepatic encephalopathy; treat with lactulose and rifaximin.
C. Cerebellar degeneration; treat with physical therapy and vitamin E.
D. Subdural hematoma; treat with neurosurgical consultation for evacuation.
