COMSAE PHASE 3 FORM 308 QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A |LATEST EXAM UPDATE 2026/2027.
Core Domains
Ambulatory and Inpatient Medicine
Emergency and Critical Care
Obstetrics and Gynecology
Pediatrics and Adolescent Medicine
Psychiatry and Behavioral Health
Surgery and Perioperative Care
Geriatrics and End-of-Life Care
Medical Ethics, Jurisprudence, and Patient Safety
Introduction
This comprehensive assessment is designed to rigorously evaluate a candidate's readiness for the COMSAE Phase 3
examination. It measures the application of foundational medical knowledge in the context of clinical decision-
making, patient management, and healthcare systems. The examination is structured with multiple-choice
questions that simulate real-world clinical scenarios, emphasizing diagnostic acumen, treatment planning, and the
integration of ethical and legal standards into patient care. The content spans core specialties, requiring the
examinee to synthesize information from various disciplines to formulate appropriate, evidence-based
management strategies for complex patient presentations, reflecting the scope of unsupervised medical practice.
,Section One: Questions 1-100
1. A 72-year-old male with a history of hypertension and type 2 diabetes presents with a 3-day history of
worsening dyspnea, orthopnea, and lower extremity edema. He reports a 5-pound weight gain over the past
week. On examination, his blood pressure is 160/95 mmHg, heart rate is 96 bpm, respiratory rate is 24/min,
and oxygen saturation is 90% on room air. Jugular venous pressure is elevated at 12 cm H2O, and he has
crackles in the lung bases up to the mid-scapular region and 2+ pitting edema in his lower extremities.
Which of the following is the most appropriate initial intravenous therapeutic intervention for this patient?
A. Furosemide
B. Labetalol
C. Nesiritide
D. Nitroglycerin
🟢 A. Furosemide
🔴 RATIONALE: This patient is presenting with acute decompensated heart failure with signs of volume
overload (elevated JVP, pulmonary crackles, edema). Intravenous loop diuretics, such as furosemide, are the
cornerstone of initial management to reduce preload and relieve pulmonary congestion. While nitroglycerin
and nesiritide are vasodilators used in acute HF, they are not the first-line therapy. Labetalol is a beta-blocker
and is not indicated for acute management of volume overload.
2. A 25-year-old woman at 28 weeks gestation presents to the emergency department with a severe
headache, blurred vision, and nausea. Her blood pressure is 165/108 mmHg, and urine dipstick shows 3+
protein. She has no history of chronic hypertension. Her deep tendon reflexes are 3+ with clonus. Which of
the following is the most appropriate initial medication for immediate management?
,A. Labetalol
B. Methyldopa
C. Nifedipine
D. Hydralazine
🟢 D. Hydralazine
🔴 RATIONALE: This patient's presentation is concerning for preeclampsia with severe features (blood pressure
≥160/110, neurologic symptoms, proteinuria, and hyperreflexia). The immediate management of severe
hypertension in a pregnant patient at or beyond 28 weeks includes IV hydralazine, IV labetalol, or oral
nifedipine. While labetalol is a valid option, IV hydralazine is frequently preferred and is specifically indicated in
this context. Methyldopa is used for chronic management, not acute hypertensive emergencies.
3. A 6-year-old boy is brought to the clinic by his mother who is concerned about a new rash. He has had a
fever for the past three days, which has now resolved, and he developed a non-blanching, petechial rash on
his trunk and extremities. He is alert and playful, and his vital signs are normal. Which of the following is the
most appropriate next step in management?
A. Admit for observation and intravenous antibiotics
B. Obtain a complete blood count and blood cultures
C. Reassure the mother and recommend symptomatic treatment
D. Prescribe oral amoxicillin for a suspected bacterial infection
🟢 C. Reassure the mother and recommend symptomatic treatment
🔴 RATIONALE: This clinical presentation is classic for a post-febrile benign exanthem, most likely a viral
exanthem, often seen with enteroviruses or other viral illnesses. The key distinguishing feature is that the child is
well-appearing and his fever has resolved. A non-blanching rash in a well-appearing, afebrile child is much less
, concerning than in a febrile, ill-appearing child. Therefore, supportive care and reassurance are the most
appropriate management.
4. A 55-year-old male with a history of chronic obstructive pulmonary disease (COPD) presents with a 2-
week history of increased dyspnea and purulent sputum production. He reports a low-grade fever and is
currently on home oxygen therapy. On examination, he is tachypneic and using accessory muscles. Arterial
blood gas on 2L nasal cannula shows: pH 7.32, PaCO2 65 mmHg, PaO2 55 mmHg, HCO3 30 mEq/L. What is
the most appropriate next step in management?
A. Increase the FiO2 to 100% via non-rebreather mask
B. Initiate non-invasive positive pressure ventilation (NIPPV)
C. Obtain a chest X-ray and start broad-spectrum antibiotics
D. Administer a short course of systemic corticosteroids
🟢 B. Initiate non-invasive positive pressure ventilation (NIPPV)
🔴 RATIONALE: This patient has an acute exacerbation of COPD with evidence of acute-on-chronic respiratory
failure (pH < 7.35, elevated PaCO2). Non-invasive positive pressure ventilation (NIPPV) is the first-line treatment
for acute hypercapnic respiratory failure in COPD to prevent intubation and improve outcomes. While
antibiotics and steroids are indicated, the immediate life-threatening concern is the respiratory acidosis, which
is best addressed by NIPPV.
5. A 45-year-old woman with no significant past medical history presents with sudden onset of severe, sharp
chest pain radiating to her back. She describes the pain as a "tearing" sensation. Her blood pressure is
155/90 mmHg in the right arm and 100/70 mmHg in the left arm. Which of the following is the most
appropriate initial imaging modality to confirm the diagnosis?
RATIONALES 2026 Q&A |LATEST EXAM UPDATE 2026/2027.
Core Domains
Ambulatory and Inpatient Medicine
Emergency and Critical Care
Obstetrics and Gynecology
Pediatrics and Adolescent Medicine
Psychiatry and Behavioral Health
Surgery and Perioperative Care
Geriatrics and End-of-Life Care
Medical Ethics, Jurisprudence, and Patient Safety
Introduction
This comprehensive assessment is designed to rigorously evaluate a candidate's readiness for the COMSAE Phase 3
examination. It measures the application of foundational medical knowledge in the context of clinical decision-
making, patient management, and healthcare systems. The examination is structured with multiple-choice
questions that simulate real-world clinical scenarios, emphasizing diagnostic acumen, treatment planning, and the
integration of ethical and legal standards into patient care. The content spans core specialties, requiring the
examinee to synthesize information from various disciplines to formulate appropriate, evidence-based
management strategies for complex patient presentations, reflecting the scope of unsupervised medical practice.
,Section One: Questions 1-100
1. A 72-year-old male with a history of hypertension and type 2 diabetes presents with a 3-day history of
worsening dyspnea, orthopnea, and lower extremity edema. He reports a 5-pound weight gain over the past
week. On examination, his blood pressure is 160/95 mmHg, heart rate is 96 bpm, respiratory rate is 24/min,
and oxygen saturation is 90% on room air. Jugular venous pressure is elevated at 12 cm H2O, and he has
crackles in the lung bases up to the mid-scapular region and 2+ pitting edema in his lower extremities.
Which of the following is the most appropriate initial intravenous therapeutic intervention for this patient?
A. Furosemide
B. Labetalol
C. Nesiritide
D. Nitroglycerin
🟢 A. Furosemide
🔴 RATIONALE: This patient is presenting with acute decompensated heart failure with signs of volume
overload (elevated JVP, pulmonary crackles, edema). Intravenous loop diuretics, such as furosemide, are the
cornerstone of initial management to reduce preload and relieve pulmonary congestion. While nitroglycerin
and nesiritide are vasodilators used in acute HF, they are not the first-line therapy. Labetalol is a beta-blocker
and is not indicated for acute management of volume overload.
2. A 25-year-old woman at 28 weeks gestation presents to the emergency department with a severe
headache, blurred vision, and nausea. Her blood pressure is 165/108 mmHg, and urine dipstick shows 3+
protein. She has no history of chronic hypertension. Her deep tendon reflexes are 3+ with clonus. Which of
the following is the most appropriate initial medication for immediate management?
,A. Labetalol
B. Methyldopa
C. Nifedipine
D. Hydralazine
🟢 D. Hydralazine
🔴 RATIONALE: This patient's presentation is concerning for preeclampsia with severe features (blood pressure
≥160/110, neurologic symptoms, proteinuria, and hyperreflexia). The immediate management of severe
hypertension in a pregnant patient at or beyond 28 weeks includes IV hydralazine, IV labetalol, or oral
nifedipine. While labetalol is a valid option, IV hydralazine is frequently preferred and is specifically indicated in
this context. Methyldopa is used for chronic management, not acute hypertensive emergencies.
3. A 6-year-old boy is brought to the clinic by his mother who is concerned about a new rash. He has had a
fever for the past three days, which has now resolved, and he developed a non-blanching, petechial rash on
his trunk and extremities. He is alert and playful, and his vital signs are normal. Which of the following is the
most appropriate next step in management?
A. Admit for observation and intravenous antibiotics
B. Obtain a complete blood count and blood cultures
C. Reassure the mother and recommend symptomatic treatment
D. Prescribe oral amoxicillin for a suspected bacterial infection
🟢 C. Reassure the mother and recommend symptomatic treatment
🔴 RATIONALE: This clinical presentation is classic for a post-febrile benign exanthem, most likely a viral
exanthem, often seen with enteroviruses or other viral illnesses. The key distinguishing feature is that the child is
well-appearing and his fever has resolved. A non-blanching rash in a well-appearing, afebrile child is much less
, concerning than in a febrile, ill-appearing child. Therefore, supportive care and reassurance are the most
appropriate management.
4. A 55-year-old male with a history of chronic obstructive pulmonary disease (COPD) presents with a 2-
week history of increased dyspnea and purulent sputum production. He reports a low-grade fever and is
currently on home oxygen therapy. On examination, he is tachypneic and using accessory muscles. Arterial
blood gas on 2L nasal cannula shows: pH 7.32, PaCO2 65 mmHg, PaO2 55 mmHg, HCO3 30 mEq/L. What is
the most appropriate next step in management?
A. Increase the FiO2 to 100% via non-rebreather mask
B. Initiate non-invasive positive pressure ventilation (NIPPV)
C. Obtain a chest X-ray and start broad-spectrum antibiotics
D. Administer a short course of systemic corticosteroids
🟢 B. Initiate non-invasive positive pressure ventilation (NIPPV)
🔴 RATIONALE: This patient has an acute exacerbation of COPD with evidence of acute-on-chronic respiratory
failure (pH < 7.35, elevated PaCO2). Non-invasive positive pressure ventilation (NIPPV) is the first-line treatment
for acute hypercapnic respiratory failure in COPD to prevent intubation and improve outcomes. While
antibiotics and steroids are indicated, the immediate life-threatening concern is the respiratory acidosis, which
is best addressed by NIPPV.
5. A 45-year-old woman with no significant past medical history presents with sudden onset of severe, sharp
chest pain radiating to her back. She describes the pain as a "tearing" sensation. Her blood pressure is
155/90 mmHg in the right arm and 100/70 mmHg in the left arm. Which of the following is the most
appropriate initial imaging modality to confirm the diagnosis?
