COMSAE PHASE 1 FORM 114 STUDY GUIDE
2026 | COMPLETE PRACTICE EXAM | HIGHL-
YIELD QUESTIONS, VERIFIED ANSWERS &
DETAILED EXPLANATIONS
• This is a comprehensive COMSAE Phase 1 Form 114 practice exam featuring 200
high-yield questions with verified answers and detailed EXPERT RATIONALE —
designed to mirror the real exam experience and reinforce clinical reasoning.
• Use this material by reading each question carefully, selecting your answer before
revealing the correct option, and studying the EXPERT RATIONALE deeply to
understand the "why" behind each answer.
COMSAE PHASE 1 FORM 114 — COMPLETE PRACTICE EXAM 200 Questions |
Verified Answers | Detailed EXPERT RATIONALE
QUESTION 1
A 45-year-old male presents with crushing chest pain radiating to the left arm,
diaphoresis, and nausea for the past 2 hours. ECG shows ST elevation in leads
II, III, and aVF. Which coronary artery is most likely occluded?
A. Left anterior descending artery
B. Left circumflex artery
C. Left main coronary artery
D. Right coronary artery
E. Posterior descending artery
CORRECT ANSWER: D. Right coronary artery
EXPERT RATIONALE: ST elevation in leads II, III, and aVF indicates an inferior MI.
The right coronary artery (RCA) supplies the inferior wall of the left ventricle in the
majority of patients (right-dominant circulation). The RCA also supplies the SA and
AV nodes, which is why inferior MIs are often associated with bradyarrhythmias.
,QUESTION 2
A 28-year-old woman presents with a butterfly-shaped rash across her cheeks
and nose, joint pain, and fatigue. Labs show positive ANA and anti-dsDNA
antibodies. Which of the following is the most appropriate initial treatment?
A. Methotrexate
B. Cyclophosphamide
C. Hydroxychloroquine
D. Prednisone 60mg daily
E. Azathioprine
CORRECT ANSWER: C. Hydroxychloroquine
EXPERT RATIONALE: Hydroxychloroquine is the cornerstone of SLE
management for mild-to-moderate disease, including skin and joint manifestations.
It reduces flares, prevents organ damage, and improves survival. High-dose
steroids and immunosuppressants are reserved for severe or organ-threatening
disease.
QUESTION 3
A 7-year-old boy is brought in for bed-wetting. He has no daytime symptoms
and normal urinalysis. What is the most appropriate first-line management?
A. Oxybutynin
B. Desmopressin
C. Imipramine
D. Motivational therapy and enuresis alarm
E. Urology referral
CORRECT ANSWER: D. Motivational therapy and enuresis alarm
, EXPERT RATIONALE: Primary nocturnal enuresis in children is best managed
initially with behavioral interventions. The enuresis alarm is the most effective long-
term treatment with the lowest relapse rate. Desmopressin may be used for short-
term situations (sleepovers), while imipramine is rarely used due to its side effect
profile.
QUESTION 4
A 65-year-old man with a 40 pack-year smoking history presents with
hemoptysis, weight loss, and a hilar mass on chest X-ray. Biopsy shows small
dark cells with scant cytoplasm. Which of the following is most associated
with this tumor?
A. ACTH-independent Cushing syndrome
B. Hypercalcemia
C. SIADH and ectopic ACTH production
D. Carcinoid syndrome
E. Gynecomastia
CORRECT ANSWER: C. SIADH and ectopic ACTH production
EXPERT RATIONALE: Small cell lung carcinoma (SCLC) is characterized by
neuroendocrine cells. It is strongly associated with paraneoplastic syndromes
including SIADH (causing hyponatremia) and ectopic ACTH production (causing
Cushing syndrome). It arises centrally near the hilum and is strongly linked to
smoking.
QUESTION 5
A 32-year-old woman at 10 weeks gestation presents with severe nausea,
vomiting, and a uterus larger than expected for gestational age. Beta-hCG is
markedly elevated and ultrasound shows a "snowstorm" appearance. What is
the next best step?
, A. Methotrexate administration
B. Expectant management
C. Suction curettage
D. Hysterectomy
E. Repeat ultrasound in 2 weeks
CORRECT ANSWER: C. Suction curettage
EXPERT RATIONALE: The clinical picture is consistent with a complete
hydatidiform mole. The treatment of choice is suction curettage (uterine
evacuation). Serial beta-hCG monitoring is required post-evacuation to detect
gestational trophoblastic neoplasia. Methotrexate is used for malignant
transformation, not initial management.
QUESTION 6
A 55-year-old man presents with progressive dysphagia, first to solids then
liquids, and significant weight loss over 6 months. He has a history of GERD
and obesity. What is the most likely diagnosis?
A. Achalasia
B. Esophageal squamous cell carcinoma
C. Zenker diverticulum
D. Esophageal adenocarcinoma
E. Diffuse esophageal spasm
CORRECT ANSWER: D. Esophageal adenocarcinoma
EXPERT RATIONALE: Progressive dysphagia from solids to liquids is classic for
esophageal malignancy. Adenocarcinoma arises in the distal esophagus and is
strongly associated with chronic GERD and Barrett's esophagus. Obesity is an
independent risk factor. Squamous cell carcinoma is more commonly associated
with smoking and alcohol and arises in the mid-esophagus.
2026 | COMPLETE PRACTICE EXAM | HIGHL-
YIELD QUESTIONS, VERIFIED ANSWERS &
DETAILED EXPLANATIONS
• This is a comprehensive COMSAE Phase 1 Form 114 practice exam featuring 200
high-yield questions with verified answers and detailed EXPERT RATIONALE —
designed to mirror the real exam experience and reinforce clinical reasoning.
• Use this material by reading each question carefully, selecting your answer before
revealing the correct option, and studying the EXPERT RATIONALE deeply to
understand the "why" behind each answer.
COMSAE PHASE 1 FORM 114 — COMPLETE PRACTICE EXAM 200 Questions |
Verified Answers | Detailed EXPERT RATIONALE
QUESTION 1
A 45-year-old male presents with crushing chest pain radiating to the left arm,
diaphoresis, and nausea for the past 2 hours. ECG shows ST elevation in leads
II, III, and aVF. Which coronary artery is most likely occluded?
A. Left anterior descending artery
B. Left circumflex artery
C. Left main coronary artery
D. Right coronary artery
E. Posterior descending artery
CORRECT ANSWER: D. Right coronary artery
EXPERT RATIONALE: ST elevation in leads II, III, and aVF indicates an inferior MI.
The right coronary artery (RCA) supplies the inferior wall of the left ventricle in the
majority of patients (right-dominant circulation). The RCA also supplies the SA and
AV nodes, which is why inferior MIs are often associated with bradyarrhythmias.
,QUESTION 2
A 28-year-old woman presents with a butterfly-shaped rash across her cheeks
and nose, joint pain, and fatigue. Labs show positive ANA and anti-dsDNA
antibodies. Which of the following is the most appropriate initial treatment?
A. Methotrexate
B. Cyclophosphamide
C. Hydroxychloroquine
D. Prednisone 60mg daily
E. Azathioprine
CORRECT ANSWER: C. Hydroxychloroquine
EXPERT RATIONALE: Hydroxychloroquine is the cornerstone of SLE
management for mild-to-moderate disease, including skin and joint manifestations.
It reduces flares, prevents organ damage, and improves survival. High-dose
steroids and immunosuppressants are reserved for severe or organ-threatening
disease.
QUESTION 3
A 7-year-old boy is brought in for bed-wetting. He has no daytime symptoms
and normal urinalysis. What is the most appropriate first-line management?
A. Oxybutynin
B. Desmopressin
C. Imipramine
D. Motivational therapy and enuresis alarm
E. Urology referral
CORRECT ANSWER: D. Motivational therapy and enuresis alarm
, EXPERT RATIONALE: Primary nocturnal enuresis in children is best managed
initially with behavioral interventions. The enuresis alarm is the most effective long-
term treatment with the lowest relapse rate. Desmopressin may be used for short-
term situations (sleepovers), while imipramine is rarely used due to its side effect
profile.
QUESTION 4
A 65-year-old man with a 40 pack-year smoking history presents with
hemoptysis, weight loss, and a hilar mass on chest X-ray. Biopsy shows small
dark cells with scant cytoplasm. Which of the following is most associated
with this tumor?
A. ACTH-independent Cushing syndrome
B. Hypercalcemia
C. SIADH and ectopic ACTH production
D. Carcinoid syndrome
E. Gynecomastia
CORRECT ANSWER: C. SIADH and ectopic ACTH production
EXPERT RATIONALE: Small cell lung carcinoma (SCLC) is characterized by
neuroendocrine cells. It is strongly associated with paraneoplastic syndromes
including SIADH (causing hyponatremia) and ectopic ACTH production (causing
Cushing syndrome). It arises centrally near the hilum and is strongly linked to
smoking.
QUESTION 5
A 32-year-old woman at 10 weeks gestation presents with severe nausea,
vomiting, and a uterus larger than expected for gestational age. Beta-hCG is
markedly elevated and ultrasound shows a "snowstorm" appearance. What is
the next best step?
, A. Methotrexate administration
B. Expectant management
C. Suction curettage
D. Hysterectomy
E. Repeat ultrasound in 2 weeks
CORRECT ANSWER: C. Suction curettage
EXPERT RATIONALE: The clinical picture is consistent with a complete
hydatidiform mole. The treatment of choice is suction curettage (uterine
evacuation). Serial beta-hCG monitoring is required post-evacuation to detect
gestational trophoblastic neoplasia. Methotrexate is used for malignant
transformation, not initial management.
QUESTION 6
A 55-year-old man presents with progressive dysphagia, first to solids then
liquids, and significant weight loss over 6 months. He has a history of GERD
and obesity. What is the most likely diagnosis?
A. Achalasia
B. Esophageal squamous cell carcinoma
C. Zenker diverticulum
D. Esophageal adenocarcinoma
E. Diffuse esophageal spasm
CORRECT ANSWER: D. Esophageal adenocarcinoma
EXPERT RATIONALE: Progressive dysphagia from solids to liquids is classic for
esophageal malignancy. Adenocarcinoma arises in the distal esophagus and is
strongly associated with chronic GERD and Barrett's esophagus. Obesity is an
independent risk factor. Squamous cell carcinoma is more commonly associated
with smoking and alcohol and arises in the mid-esophagus.
