[COMSAE FORM 113 PRACTICE EXAM VERSION 1 – QUESTIONS AND ANSWERS
| VERIFIED AND WELL DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED
PASS | LATEST EXAM UPDATE]
Core Domains
1. Cardiovascular System
2. Respiratory System
3. Gastrointestinal System
4. Musculoskeletal System
5. Neurology and Psychiatry
6. Endocrine and Metabolic Disorders
7. Infectious Diseases and Immunology
8. Obstetrics and Gynecology
9. Pediatrics and Adolescent Medicine
10. Professional Ethics, Legal Standards, and Patient Safety
Introduction
This comprehensive assessment is designed to evaluate your readiness for the
COMSAE Form 113 examination. It rigorously tests foundational medical
knowledge, clinical reasoning, and the practical application of core principles in
patient care. The exam consists of 200 multiple-choice questions, each paired with a
verified correct answer and a detailed rationale. The questions are structured to
mirror real-world clinical scenarios, challenging you to integrate basic science
concepts with evidence-based decision-making. Emphasis is placed on differential
diagnosis, management strategies, and an understanding of the legal and ethical
frameworks that guide medical practice. This resource is intended for focused
preparation and to reinforce key concepts.
Success on this exam requires a deep understanding of disease processes, strong
diagnostic skills, and the ability to prioritize patient safety. Each question is crafted
to test higher-order thinking, moving beyond simple recall to application and
analysis. Utilize this practice exam to identify areas of strength and weakness, and
to acclimate to the format and complexity of the actual COMSAE. Remember that
thorough preparation involves not just selecting the correct answer, but
understanding the rationale behind it, solidifying your knowledge base for both the
exam and your future clinical practice.
SECTION ONE: QUESTIONS 1-100
,1. A 68-year-old male with a history of hypertension and type 2 diabetes
presents with sudden, severe chest pain that radiates to his back. His blood
pressure is 160/90 mmHg in the right arm and 110/70 mmHg in the left arm. An
ECG shows no acute ischemic changes. What is the most likely diagnosis?
A. Acute myocardial infarction
B. Pulmonary embolism
C. Aortic dissection
D. Pericarditis
🟢 C. Aortic dissection
🔴 Explanation: The classic presentation of aortic dissection includes sudden,
severe, "tearing" chest pain that radiates to the back, along with a disparity in
blood pressure between arms. The ECG findings are often non-specific, as seen
here. This differentiates it from an MI (which would show ischemic changes) and a
pulmonary embolism (which presents with pleuritic chest pain and hypoxia).
2. A 25-year-old female presents with acute onset of pleuritic chest pain,
shortness of breath, and hemoptysis. She is on oral contraceptives and recently
returned from a transatlantic flight. Her heart rate is 110 bpm, and respiratory
rate is 24/min. Which of the following is the most appropriate initial diagnostic
test?
A. Chest X-ray
B. D-dimer assay
C. Ventilation-perfusion (V/Q) scan
D. Pulmonary angiography
🟢 B. D-dimer assay
🔴 Explanation: This patient has a high-risk presentation for a pulmonary
embolism (PE) given the risk factors and symptoms. A D-dimer assay is the
recommended initial screening test for PE in patients with a low-to-moderate
pretest probability. A negative D-dimer can effectively rule out a PE in this
context.
3. A 55-year-old man with a history of chronic alcoholism presents with acute
onset of severe epigastric pain that radiates to the back, nausea, and vomiting.
On examination, he has abdominal tenderness and guarding. Serum amylase
and lipase are markedly elevated. What is the most common cause of this
condition?
,A. Gallstones
B. Alcohol abuse
C. Hyperlipidemia
D. Medications
🟢 A. Gallstones
🔴 Explanation: While this patient has a history of alcohol abuse, which is a major
cause, gallstones are the most common cause of acute pancreatitis overall. The
biliary obstruction caused by stones is the leading etiology.
4. A 32-year-old woman presents with fatigue, weight gain, cold intolerance,
and constipation. Physical exam reveals a bradycardia and a delayed relaxation
of the deep tendon reflexes. Which of the following laboratory findings would
be most consistent with a diagnosis of primary hypothyroidism?
A. Decreased TSH, decreased free T4
B. Increased TSH, decreased free T4
C. Decreased TSH, increased free T4
D. Increased TSH, increased free T4
🟢 B. Increased TSH, decreased free T4
🔴 Explanation: In primary hypothyroidism, the thyroid gland is failing to produce
adequate thyroid hormones (T4). This leads to a decreased negative feedback on
the pituitary, resulting in increased secretion of Thyroid-Stimulating Hormone
(TSH). Therefore, the hallmark laboratory finding is a high TSH and a low free T4.
5. A 45-year-old male with a history of gout presents with severe pain, swelling,
and redness in his right knee joint. The joint is aspirated and the synovial fluid
is sent for analysis. Which of the following findings is most indicative of a gout
flare?
A. Gram-positive cocci in the fluid
B. Calcium pyrophosphate crystals
C. Monosodium urate crystals
D. A leukocyte count of 500 cells/µL
🟢 C. Monosodium urate crystals
🔴 Explanation: The identification of monosodium urate (MSU) crystals in the
synovial fluid is the definitive diagnostic finding for gout. These crystals are
, negatively birefringent under polarized light microscopy. Calcium pyrophosphate
crystals are associated with pseudogout.
6. A 70-year-old woman presents with a progressive cough, hemoptysis, and
weight loss over the past three months. She is a long-time smoker with a 60-
pack-year history. A chest X-ray reveals a hilar mass. What is the most
appropriate next step in the management of this patient?
A. Start empiric antibiotics
B. Perform a CT-guided biopsy
C. Refer for palliative care
D. Schedule a follow-up chest X-ray in 6 months
🟢 B. Perform a CT-guided biopsy
🔴 Explanation: Given the high suspicion for lung cancer based on the patient's
history, symptoms, and findings on chest X-ray, the most appropriate next step is
to obtain a tissue diagnosis. A CT-guided biopsy is a common and effective
method to biopsy a hilar mass to confirm malignancy and determine the
histological type.
7. A 28-year-old woman presents with acute, severe, unilateral headache
accompanied by ipsilateral autonomic symptoms such as conjunctival injection,
lacrimation, and nasal congestion. The headache is described as stabbing and
occurs in clusters of multiple episodes per day. Which of the following is the
most likely diagnosis?
A. Migraine
B. Tension-type headache
C. Cluster headache
D. Subarachnoid hemorrhage
🟢 C. Cluster headache
🔴 Explanation: The presentation is classic for a cluster headache, which is
characterized by severe, unilateral periorbital pain with associated ipsilateral
autonomic features (like lacrimation, conjunctival injection, and rhinorrhea). The
headache occurs in clusters, with multiple headaches per day.
8. A 62-year-old male with a history of benign prostatic hyperplasia presents
with acute urinary retention. He is unable to void and has significant
suprapubic discomfort. Following catheterization, which of the following is the
most important parameter to monitor to prevent a potential complication?
| VERIFIED AND WELL DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED
PASS | LATEST EXAM UPDATE]
Core Domains
1. Cardiovascular System
2. Respiratory System
3. Gastrointestinal System
4. Musculoskeletal System
5. Neurology and Psychiatry
6. Endocrine and Metabolic Disorders
7. Infectious Diseases and Immunology
8. Obstetrics and Gynecology
9. Pediatrics and Adolescent Medicine
10. Professional Ethics, Legal Standards, and Patient Safety
Introduction
This comprehensive assessment is designed to evaluate your readiness for the
COMSAE Form 113 examination. It rigorously tests foundational medical
knowledge, clinical reasoning, and the practical application of core principles in
patient care. The exam consists of 200 multiple-choice questions, each paired with a
verified correct answer and a detailed rationale. The questions are structured to
mirror real-world clinical scenarios, challenging you to integrate basic science
concepts with evidence-based decision-making. Emphasis is placed on differential
diagnosis, management strategies, and an understanding of the legal and ethical
frameworks that guide medical practice. This resource is intended for focused
preparation and to reinforce key concepts.
Success on this exam requires a deep understanding of disease processes, strong
diagnostic skills, and the ability to prioritize patient safety. Each question is crafted
to test higher-order thinking, moving beyond simple recall to application and
analysis. Utilize this practice exam to identify areas of strength and weakness, and
to acclimate to the format and complexity of the actual COMSAE. Remember that
thorough preparation involves not just selecting the correct answer, but
understanding the rationale behind it, solidifying your knowledge base for both the
exam and your future clinical practice.
SECTION ONE: QUESTIONS 1-100
,1. A 68-year-old male with a history of hypertension and type 2 diabetes
presents with sudden, severe chest pain that radiates to his back. His blood
pressure is 160/90 mmHg in the right arm and 110/70 mmHg in the left arm. An
ECG shows no acute ischemic changes. What is the most likely diagnosis?
A. Acute myocardial infarction
B. Pulmonary embolism
C. Aortic dissection
D. Pericarditis
🟢 C. Aortic dissection
🔴 Explanation: The classic presentation of aortic dissection includes sudden,
severe, "tearing" chest pain that radiates to the back, along with a disparity in
blood pressure between arms. The ECG findings are often non-specific, as seen
here. This differentiates it from an MI (which would show ischemic changes) and a
pulmonary embolism (which presents with pleuritic chest pain and hypoxia).
2. A 25-year-old female presents with acute onset of pleuritic chest pain,
shortness of breath, and hemoptysis. She is on oral contraceptives and recently
returned from a transatlantic flight. Her heart rate is 110 bpm, and respiratory
rate is 24/min. Which of the following is the most appropriate initial diagnostic
test?
A. Chest X-ray
B. D-dimer assay
C. Ventilation-perfusion (V/Q) scan
D. Pulmonary angiography
🟢 B. D-dimer assay
🔴 Explanation: This patient has a high-risk presentation for a pulmonary
embolism (PE) given the risk factors and symptoms. A D-dimer assay is the
recommended initial screening test for PE in patients with a low-to-moderate
pretest probability. A negative D-dimer can effectively rule out a PE in this
context.
3. A 55-year-old man with a history of chronic alcoholism presents with acute
onset of severe epigastric pain that radiates to the back, nausea, and vomiting.
On examination, he has abdominal tenderness and guarding. Serum amylase
and lipase are markedly elevated. What is the most common cause of this
condition?
,A. Gallstones
B. Alcohol abuse
C. Hyperlipidemia
D. Medications
🟢 A. Gallstones
🔴 Explanation: While this patient has a history of alcohol abuse, which is a major
cause, gallstones are the most common cause of acute pancreatitis overall. The
biliary obstruction caused by stones is the leading etiology.
4. A 32-year-old woman presents with fatigue, weight gain, cold intolerance,
and constipation. Physical exam reveals a bradycardia and a delayed relaxation
of the deep tendon reflexes. Which of the following laboratory findings would
be most consistent with a diagnosis of primary hypothyroidism?
A. Decreased TSH, decreased free T4
B. Increased TSH, decreased free T4
C. Decreased TSH, increased free T4
D. Increased TSH, increased free T4
🟢 B. Increased TSH, decreased free T4
🔴 Explanation: In primary hypothyroidism, the thyroid gland is failing to produce
adequate thyroid hormones (T4). This leads to a decreased negative feedback on
the pituitary, resulting in increased secretion of Thyroid-Stimulating Hormone
(TSH). Therefore, the hallmark laboratory finding is a high TSH and a low free T4.
5. A 45-year-old male with a history of gout presents with severe pain, swelling,
and redness in his right knee joint. The joint is aspirated and the synovial fluid
is sent for analysis. Which of the following findings is most indicative of a gout
flare?
A. Gram-positive cocci in the fluid
B. Calcium pyrophosphate crystals
C. Monosodium urate crystals
D. A leukocyte count of 500 cells/µL
🟢 C. Monosodium urate crystals
🔴 Explanation: The identification of monosodium urate (MSU) crystals in the
synovial fluid is the definitive diagnostic finding for gout. These crystals are
, negatively birefringent under polarized light microscopy. Calcium pyrophosphate
crystals are associated with pseudogout.
6. A 70-year-old woman presents with a progressive cough, hemoptysis, and
weight loss over the past three months. She is a long-time smoker with a 60-
pack-year history. A chest X-ray reveals a hilar mass. What is the most
appropriate next step in the management of this patient?
A. Start empiric antibiotics
B. Perform a CT-guided biopsy
C. Refer for palliative care
D. Schedule a follow-up chest X-ray in 6 months
🟢 B. Perform a CT-guided biopsy
🔴 Explanation: Given the high suspicion for lung cancer based on the patient's
history, symptoms, and findings on chest X-ray, the most appropriate next step is
to obtain a tissue diagnosis. A CT-guided biopsy is a common and effective
method to biopsy a hilar mass to confirm malignancy and determine the
histological type.
7. A 28-year-old woman presents with acute, severe, unilateral headache
accompanied by ipsilateral autonomic symptoms such as conjunctival injection,
lacrimation, and nasal congestion. The headache is described as stabbing and
occurs in clusters of multiple episodes per day. Which of the following is the
most likely diagnosis?
A. Migraine
B. Tension-type headache
C. Cluster headache
D. Subarachnoid hemorrhage
🟢 C. Cluster headache
🔴 Explanation: The presentation is classic for a cluster headache, which is
characterized by severe, unilateral periorbital pain with associated ipsilateral
autonomic features (like lacrimation, conjunctival injection, and rhinorrhea). The
headache occurs in clusters, with multiple headaches per day.
8. A 62-year-old male with a history of benign prostatic hyperplasia presents
with acute urinary retention. He is unable to void and has significant
suprapubic discomfort. Following catheterization, which of the following is the
most important parameter to monitor to prevent a potential complication?
