COMSAE PHASE 3 FORM 306 QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A | LATEST EXAM UPDATE 2026/2027.
Core Domains:
Internal Medicine
Obstetrics and Gynecology
Pediatrics
Psychiatry and Behavioral Health
Surgery and Surgical Subspecialties
Emergency Medicine and Critical Care
Public Health and Preventive Medicine
Medical Ethics and Jurisprudence
Healthcare Administration and Quality Improvement
Diagnostic Imaging and Laboratory Medicine
Introduction
This comprehensive assessment is meticulously designed to mirror the rigorous standards of the COMSAE Phase 3
Form 306, serving as a pivotal tool for self-evaluation and mastery of core osteopathic competencies. The exam
evaluates foundational and applied medical knowledge, clinical decision-making, and the integration of evidence-
based practice across major medical disciplines. Each question is crafted to assess the candidate’s ability to
navigate complex, scenario-based presentations typical of a clinical setting, emphasizing real-world application,
critical thinking, and sound professional judgment. The format includes multiple-choice questions that challenge
the candidate to apply their knowledge in diagnostic, therapeutic, and ethical contexts, ensuring readiness for the
demands of independent clinical practice.
,SECTION ONE: QUESTIONS 1 – 100
1.
A 72-year-old male with a history of hypertension and type 2 diabetes presents with a sudden onset of severe,
tearing chest pain that radiates to his back. His blood pressure is 150/90 mmHg in the right arm and 110/70
mmHg in the left arm. An ECG shows no acute ischemic changes. Which of the following is the most
appropriate immediate next step?
A. Administer sublingual nitroglycerin
B. Obtain a CT angiography of the chest
C. Perform a bedside echocardiogram
D. Start an IV infusion of alteplase
🟢 B. Obtain a CT angiography of the chest
🔴 RATIONALE: The patient's presentation of sudden, tearing chest pain with a pulse differential is classic for an
aortic dissection. CT angiography of the chest is the gold standard for rapid diagnosis and surgical planning in
this emergent situation. Administering nitroglycerin is contraindicated for a right ventricular infarct and is not
the first-line diagnostic step. An echocardiogram is useful but may not provide the definitive anatomical detail
needed for dissection, and thrombolytics are used for STEMI, which is not the primary concern here.
2.
A 34-year-old woman at 28 weeks gestation presents with a complaint of severe headache, visual disturbances,
and right upper quadrant pain. Her blood pressure is 165/105 mmHg. Urinalysis reveals 3+ protein. What is the
most appropriate management for this patient?
,A. Oral labetalol for outpatient management
B. Immediate induction of labor
C. Magnesium sulfate for seizure prophylaxis and hospitalization
D. Administer betamethasone and discharge with follow-up
🟢 C. Magnesium sulfate for seizure prophylaxis and hospitalization
🔴 RATIONALE: The patient exhibits signs of severe preeclampsia (severe hypertension, proteinuria, headache,
and RUQ pain). The immediate management includes hospitalization and administration of magnesium sulfate
to prevent eclampsia, alongside antihypertensive therapy. Induction of labor is a definitive treatment but may
not be the immediate first step if the patient is stable. Outpatient management is inappropriate, and while
betamethasone is given for fetal lung maturity, it does not address the immediate maternal risks.
3.
A 6-year-old child presents with a 3-day history of a barking cough, hoarseness, and a low-grade fever. The
symptoms are worse at night. On examination, the child is stridorous at rest but is sitting upright and alert.
Which of the following is the most appropriate initial treatment?
A. Racemic epinephrine nebulization
B. Systemic corticosteroids
C. Heliox therapy
D. Antibiotics
🟢 B. Systemic corticosteroids
🔴 RATIONALE: This presentation is classic for croup (laryngotracheobronchitis). Systemic corticosteroids are
the mainstay of treatment for croup, proven to reduce symptom severity and duration. Racemic epinephrine is
, indicated for moderate to severe croup with respiratory distress (stridor at rest, retractions) but is typically not
the initial treatment for mild to moderate cases unless there is significant distress. Heliox is used for severe,
refractory cases, and antibiotics are not indicated for a viral illness.
4.
A 45-year-old male with a history of alcohol use disorder is brought to the emergency department with
confusion, ataxia, and ophthalmoplegia. What is the most likely diagnosis and the immediate treatment?
A. Wernicke encephalopathy; intravenous thiamine
B. Korsakoff syndrome; oral multivitamins
C. Hepatic encephalopathy; lactulose
D. Cerebellar degeneration; physical therapy
🟢 A. Wernicke encephalopathy; intravenous thiamine
🔴 RATIONALE: The classic triad of Wernicke encephalopathy is confusion, ataxia, and ophthalmoplegia, most
commonly seen in patients with alcohol use disorder. It is a medical emergency caused by thiamine deficiency.
The immediate, life-saving treatment is the administration of intravenous thiamine, usually before glucose.
Korsakoff syndrome is a chronic complication, hepatic encephalopathy presents with asterixis and altered
mental status due to liver failure, and cerebellar degeneration is a different manifestation of alcohol-related
neurological damage.
5.
A 68-year-old female is started on a new medication for hypertension. Three weeks later, she presents with a
persistent, dry cough. Which of the following medications is most likely responsible for this adverse effect?
RATIONALES 2026 Q&A | LATEST EXAM UPDATE 2026/2027.
Core Domains:
Internal Medicine
Obstetrics and Gynecology
Pediatrics
Psychiatry and Behavioral Health
Surgery and Surgical Subspecialties
Emergency Medicine and Critical Care
Public Health and Preventive Medicine
Medical Ethics and Jurisprudence
Healthcare Administration and Quality Improvement
Diagnostic Imaging and Laboratory Medicine
Introduction
This comprehensive assessment is meticulously designed to mirror the rigorous standards of the COMSAE Phase 3
Form 306, serving as a pivotal tool for self-evaluation and mastery of core osteopathic competencies. The exam
evaluates foundational and applied medical knowledge, clinical decision-making, and the integration of evidence-
based practice across major medical disciplines. Each question is crafted to assess the candidate’s ability to
navigate complex, scenario-based presentations typical of a clinical setting, emphasizing real-world application,
critical thinking, and sound professional judgment. The format includes multiple-choice questions that challenge
the candidate to apply their knowledge in diagnostic, therapeutic, and ethical contexts, ensuring readiness for the
demands of independent clinical practice.
,SECTION ONE: QUESTIONS 1 – 100
1.
A 72-year-old male with a history of hypertension and type 2 diabetes presents with a sudden onset of severe,
tearing chest pain that radiates to his back. His blood pressure is 150/90 mmHg in the right arm and 110/70
mmHg in the left arm. An ECG shows no acute ischemic changes. Which of the following is the most
appropriate immediate next step?
A. Administer sublingual nitroglycerin
B. Obtain a CT angiography of the chest
C. Perform a bedside echocardiogram
D. Start an IV infusion of alteplase
🟢 B. Obtain a CT angiography of the chest
🔴 RATIONALE: The patient's presentation of sudden, tearing chest pain with a pulse differential is classic for an
aortic dissection. CT angiography of the chest is the gold standard for rapid diagnosis and surgical planning in
this emergent situation. Administering nitroglycerin is contraindicated for a right ventricular infarct and is not
the first-line diagnostic step. An echocardiogram is useful but may not provide the definitive anatomical detail
needed for dissection, and thrombolytics are used for STEMI, which is not the primary concern here.
2.
A 34-year-old woman at 28 weeks gestation presents with a complaint of severe headache, visual disturbances,
and right upper quadrant pain. Her blood pressure is 165/105 mmHg. Urinalysis reveals 3+ protein. What is the
most appropriate management for this patient?
,A. Oral labetalol for outpatient management
B. Immediate induction of labor
C. Magnesium sulfate for seizure prophylaxis and hospitalization
D. Administer betamethasone and discharge with follow-up
🟢 C. Magnesium sulfate for seizure prophylaxis and hospitalization
🔴 RATIONALE: The patient exhibits signs of severe preeclampsia (severe hypertension, proteinuria, headache,
and RUQ pain). The immediate management includes hospitalization and administration of magnesium sulfate
to prevent eclampsia, alongside antihypertensive therapy. Induction of labor is a definitive treatment but may
not be the immediate first step if the patient is stable. Outpatient management is inappropriate, and while
betamethasone is given for fetal lung maturity, it does not address the immediate maternal risks.
3.
A 6-year-old child presents with a 3-day history of a barking cough, hoarseness, and a low-grade fever. The
symptoms are worse at night. On examination, the child is stridorous at rest but is sitting upright and alert.
Which of the following is the most appropriate initial treatment?
A. Racemic epinephrine nebulization
B. Systemic corticosteroids
C. Heliox therapy
D. Antibiotics
🟢 B. Systemic corticosteroids
🔴 RATIONALE: This presentation is classic for croup (laryngotracheobronchitis). Systemic corticosteroids are
the mainstay of treatment for croup, proven to reduce symptom severity and duration. Racemic epinephrine is
, indicated for moderate to severe croup with respiratory distress (stridor at rest, retractions) but is typically not
the initial treatment for mild to moderate cases unless there is significant distress. Heliox is used for severe,
refractory cases, and antibiotics are not indicated for a viral illness.
4.
A 45-year-old male with a history of alcohol use disorder is brought to the emergency department with
confusion, ataxia, and ophthalmoplegia. What is the most likely diagnosis and the immediate treatment?
A. Wernicke encephalopathy; intravenous thiamine
B. Korsakoff syndrome; oral multivitamins
C. Hepatic encephalopathy; lactulose
D. Cerebellar degeneration; physical therapy
🟢 A. Wernicke encephalopathy; intravenous thiamine
🔴 RATIONALE: The classic triad of Wernicke encephalopathy is confusion, ataxia, and ophthalmoplegia, most
commonly seen in patients with alcohol use disorder. It is a medical emergency caused by thiamine deficiency.
The immediate, life-saving treatment is the administration of intravenous thiamine, usually before glucose.
Korsakoff syndrome is a chronic complication, hepatic encephalopathy presents with asterixis and altered
mental status due to liver failure, and cerebellar degeneration is a different manifestation of alcohol-related
neurological damage.
5.
A 68-year-old female is started on a new medication for hypertension. Three weeks later, she presents with a
persistent, dry cough. Which of the following medications is most likely responsible for this adverse effect?
