COMSAE PHASE 3 FORM 309 QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |LATEST EXAM
UPDATE 2026/2027
CORE DOMAINS
Internal Medicine
Surgery and Procedural Skills
Pediatrics and Adolescent Medicine
Obstetrics and Gynecology
Psychiatry and Behavioral Health
Emergency Medicine and Acute Care
Preventive Medicine and Public Health
Medical Ethics and Legal Medicine
Pharmacology and Therapeutics
Clinical Reasoning and Diagnostic Decision-Making
INTRODUCTION
,This comprehensive assessment is designed to evaluate the clinical knowledge, diagnostic acumen, and decision-
making capabilities expected of a physician at the completion of osteopathic medical education. The examination
covers foundational medical sciences, applied clinical medicine, and professional standards necessary for
independent practice. Questions are presented in multiple-choice format with clinical vignettes that simulate real-
world patient encounters. Each scenario requires integration of basic science principles, evidence-based medicine,
and patient-centered care considerations. The examination emphasizes practical application of medical
knowledge, interpretation of diagnostic studies, selection of appropriate therapeutic interventions, and recognition
of medical emergencies. Candidates are expected to demonstrate competency in clinical reasoning, ethical
decision-making, and adherence to legal and regulatory standards governing medical practice. This assessment
serves as a tool for evaluating readiness for unsupervised patient care and successful progression through
osteopathic medical training.
SECTION ONE: QUESTIONS 1-100
1. A 67-year-old male with a 45-pack-year smoking history presents with progressive dyspnea on exertion,
chronic productive cough, and wheezing. Spirometry reveals FEV1/FVC ratio of 0.65 with FEV1 at 55% of
predicted. Which medication should be initiated as first-line maintenance therapy for this patient's
condition?
A. Albuterol inhaler as needed
B. Fluticasone/salmeterol combination inhaler
,C. Tiotropium bromide inhaler
D. Prednisone 40mg daily
🟢 C. Tiotropium bromide inhaler
🔴 RATIONALE: This patient has moderate COPD (GOLD stage 2) based on FEV1 55% predicted with airflow
obstruction. Long-acting muscarinic antagonists (LAMAs) like tiotropium are recommended as first-line
maintenance therapy for COPD to reduce exacerbations and improve symptoms. While LABA/LAMA
combinations may be used for more severe disease, tiotropium alone is appropriate initial therapy for moderate
COPD.
2. A 32-year-old female presents with fatigue, weight gain, cold intolerance, and constipation. Laboratory
studies reveal TSH 12.5 mIU/L (reference 0.4-4.5) and free T4 0.6 ng/dL (reference 0.8-1.8). What is the most
appropriate initial treatment?
A. Levothyroxine 25 mcg daily
B. Levothyroxine 100 mcg daily
C. Methimazole 10 mg daily
D. Observation with repeat labs in 3 months
🟢 A. Levothyroxine 25 mcg daily
🔴 RATIONALE: This patient has primary hypothyroidism confirmed by elevated TSH and low free T4. Initial
levothyroxine dosing should be weight-based at 1.6 mcg/kg/day, but for older patients or those with cardiac
, concerns, starting doses of 25-50 mcg daily are recommended. A dose of 100 mcg daily would be too high for
initial therapy and could precipitate cardiac complications.
3. A 45-year-old male with hypertension and diabetes presents with acute onset of severe headache, visual
disturbances, and nausea. Blood pressure is 220/130 mmHg. Fundoscopic examination reveals papilledema
and retinal hemorrhages. Which of the following is the most appropriate immediate management?
A. Oral clonidine 0.2 mg
B. Sublingual nifedipine 10 mg
C. Intravenous labetalol 20 mg
D. Oral captopril 25 mg
🟢 C. Intravenous labetalol 20 mg
🔴 RATIONALE: This patient presents with hypertensive emergency characterized by severe hypertension with
target organ damage (papilledema, retinopathy). IV labetalol is the preferred agent for hypertensive emergency
due to its rapid onset, titratable effect, and minimal risk of reflex tachycardia. Oral agents are inappropriate for
emergency management, and sublingual nifedipine can cause precipitous drops in blood pressure.
4. A 28-year-old woman in her third trimester of pregnancy develops new-onset hypertension with
proteinuria. She reports headache, visual changes, and right upper quadrant pain. Laboratory studies reveal
elevated liver enzymes and thrombocytopenia. What is the definitive treatment for this condition?
(VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |LATEST EXAM
UPDATE 2026/2027
CORE DOMAINS
Internal Medicine
Surgery and Procedural Skills
Pediatrics and Adolescent Medicine
Obstetrics and Gynecology
Psychiatry and Behavioral Health
Emergency Medicine and Acute Care
Preventive Medicine and Public Health
Medical Ethics and Legal Medicine
Pharmacology and Therapeutics
Clinical Reasoning and Diagnostic Decision-Making
INTRODUCTION
,This comprehensive assessment is designed to evaluate the clinical knowledge, diagnostic acumen, and decision-
making capabilities expected of a physician at the completion of osteopathic medical education. The examination
covers foundational medical sciences, applied clinical medicine, and professional standards necessary for
independent practice. Questions are presented in multiple-choice format with clinical vignettes that simulate real-
world patient encounters. Each scenario requires integration of basic science principles, evidence-based medicine,
and patient-centered care considerations. The examination emphasizes practical application of medical
knowledge, interpretation of diagnostic studies, selection of appropriate therapeutic interventions, and recognition
of medical emergencies. Candidates are expected to demonstrate competency in clinical reasoning, ethical
decision-making, and adherence to legal and regulatory standards governing medical practice. This assessment
serves as a tool for evaluating readiness for unsupervised patient care and successful progression through
osteopathic medical training.
SECTION ONE: QUESTIONS 1-100
1. A 67-year-old male with a 45-pack-year smoking history presents with progressive dyspnea on exertion,
chronic productive cough, and wheezing. Spirometry reveals FEV1/FVC ratio of 0.65 with FEV1 at 55% of
predicted. Which medication should be initiated as first-line maintenance therapy for this patient's
condition?
A. Albuterol inhaler as needed
B. Fluticasone/salmeterol combination inhaler
,C. Tiotropium bromide inhaler
D. Prednisone 40mg daily
🟢 C. Tiotropium bromide inhaler
🔴 RATIONALE: This patient has moderate COPD (GOLD stage 2) based on FEV1 55% predicted with airflow
obstruction. Long-acting muscarinic antagonists (LAMAs) like tiotropium are recommended as first-line
maintenance therapy for COPD to reduce exacerbations and improve symptoms. While LABA/LAMA
combinations may be used for more severe disease, tiotropium alone is appropriate initial therapy for moderate
COPD.
2. A 32-year-old female presents with fatigue, weight gain, cold intolerance, and constipation. Laboratory
studies reveal TSH 12.5 mIU/L (reference 0.4-4.5) and free T4 0.6 ng/dL (reference 0.8-1.8). What is the most
appropriate initial treatment?
A. Levothyroxine 25 mcg daily
B. Levothyroxine 100 mcg daily
C. Methimazole 10 mg daily
D. Observation with repeat labs in 3 months
🟢 A. Levothyroxine 25 mcg daily
🔴 RATIONALE: This patient has primary hypothyroidism confirmed by elevated TSH and low free T4. Initial
levothyroxine dosing should be weight-based at 1.6 mcg/kg/day, but for older patients or those with cardiac
, concerns, starting doses of 25-50 mcg daily are recommended. A dose of 100 mcg daily would be too high for
initial therapy and could precipitate cardiac complications.
3. A 45-year-old male with hypertension and diabetes presents with acute onset of severe headache, visual
disturbances, and nausea. Blood pressure is 220/130 mmHg. Fundoscopic examination reveals papilledema
and retinal hemorrhages. Which of the following is the most appropriate immediate management?
A. Oral clonidine 0.2 mg
B. Sublingual nifedipine 10 mg
C. Intravenous labetalol 20 mg
D. Oral captopril 25 mg
🟢 C. Intravenous labetalol 20 mg
🔴 RATIONALE: This patient presents with hypertensive emergency characterized by severe hypertension with
target organ damage (papilledema, retinopathy). IV labetalol is the preferred agent for hypertensive emergency
due to its rapid onset, titratable effect, and minimal risk of reflex tachycardia. Oral agents are inappropriate for
emergency management, and sublingual nifedipine can cause precipitous drops in blood pressure.
4. A 28-year-old woman in her third trimester of pregnancy develops new-onset hypertension with
proteinuria. She reports headache, visual changes, and right upper quadrant pain. Laboratory studies reveal
elevated liver enzymes and thrombocytopenia. What is the definitive treatment for this condition?
