INTERNAL MEDICINE COMAT EXAM / ACTUAL COMAT
INTERNAL MEDICINE EXAM TEST BANK 2026/2027 PRACTICE
QUESTIONS AND STUDY GUIDE COMPLETE ACCURATE EXAM
REAL QUESTIONS AND CORRECT VERIFIED ANSWERS WITH
DETAILED RATIONALES (RELIABLE ANSWERS) CURRENT
UPDATED VERSION 2026 EDITION |GUARANTEED SUCCESS A+
|JUST RELEASED |INSTANT DOWNLOAD
1. A 68-year-old male presents with a 2-week history of progressive
dyspnea on exertion, orthopnea, and paroxysmal nocturnal dyspnea.
Physical examination reveals jugular venous distention, bibasilar
crackles, and an S3 gallop. What is the most common cause of an S3
heart sound?
A) Aortic stenosis
B) Hypertrophic cardiomyopathy
C) Congestive heart failure (CORRECT ANSWER)
D) Mitral regurgitation
Rationale: An S3 gallop occurs during early diastole due to rapid
ventricular filling and is most commonly associated with congestive
heart failure, though it can also be a normal finding in children and
young adults. An S3 in an older adult is a hallmark of elevated
ventricular filling pressures and systolic heart failure. Aortic stenosis
produces a systolic ejection murmur, hypertrophic cardiomyopathy
typically causes a systolic murmur that increases with Valsalva, and
mitral regurgitation is a holosystolic murmur.
,2. A 65-year-old man presents with progressive exertional dyspnea,
orthopnea, and bilateral lower extremity edema. He has a history of
hypertension and myocardial infarction. Physical exam reveals an S3
gallop and bibasilar crackles. What is the most likely diagnosis?
A) Chronic obstructive pulmonary disease
B) Congestive heart failure (CORRECT ANSWER)
C) Pulmonary embolism
D) Acute pericarditis
Rationale: The patient has classic signs of left-sided heart failure
including orthopnea, crackles, S3 gallop, and peripheral edema.
Prior MI and hypertension are major risk factors. COPD would
present with wheezing and prolonged expiration, while PE is more
acute and pericarditis typically presents with pleuritic chest pain and
a pericardial friction rub.
3. A 62-year-old woman with a history of hypertension presents with
sudden onset of "tearing" chest pain radiating to the interscapular
region. Her blood pressure is 180/100 mmHg in the right arm and
100/60 mmHg in the left arm. Which of the following is the most
appropriate initial diagnostic study?
A) Transthoracic echocardiogram
B) CT angiography of the chest (CORRECT ANSWER)
C) Chest X-ray
,D) Cardiac catheterization
Rationale: The presentation is classic for acute aortic dissection,
especially with the pulse differential and tearing pain. CT
angiography is the preferred initial imaging study for suspected aortic
dissection. Transthoracic echocardiography may miss a dissection of
the descending aorta. Chest X-ray (widened mediastinum) is neither
sensitive nor specific. Cardiac catheterization is not the first step and
could be dangerous if the dissection involves the coronary ostia.
4. A 65-year-old man presents to the emergency department with
crushing substernal chest pain that radiates to his left arm,
accompanied by diaphoresis and nausea. The pain began 2 hours
ago. An ECG shows ST-segment elevation in leads V1–V4. Which of
the following is the most appropriate immediate intervention?
A) Administer sublingual nitroglycerin
B) Start an IV infusion of alteplase
C) Initiate dual antiplatelet therapy and arrange for immediate
percutaneous coronary intervention (PCI) (CORRECT ANSWER)
D) Give IV metoprolol to lower the heart rate
Rationale: The patient presents with an acute ST-segment elevation
myocardial infarction (STEMI). Primary PCI is the preferred
reperfusion strategy when it can be performed within 90 minutes of
presentation. If PCI is unavailable, IV thrombolytics would be
considered; however, this is not the initial step. Dual antiplatelet
, therapy (aspirin plus a P2Y12 inhibitor) should be given as soon as
the diagnosis is made.
5. A 55-year-old male with a history of myocardial infarction
presents with a diastolic decrescendo murmur best heard at the left
upper sternal border. The murmur is most consistent with:
A) Aortic stenosis
B) Aortic regurgitation (CORRECT ANSWER)
C) Mitral stenosis
D) Pulmonic stenosis
Rationale: Aortic regurgitation produces an early decrescendo
diastolic murmur. It is best auscultated at the second left intercostal
space (left upper sternal border) with the patient leaning forward and
breath held in expiration.
6. A patient presents with substernal chest pressure when walking
two blocks, relieved with rest. ECG shows no ST changes. What is
the most appropriate initial diagnostic test?
A) Coronary angiography
B) Exercise stress test (if patient can exercise and ECG interpretable)
(CORRECT ANSWER)
C) CT angiography
D) Resting echocardiogram
INTERNAL MEDICINE EXAM TEST BANK 2026/2027 PRACTICE
QUESTIONS AND STUDY GUIDE COMPLETE ACCURATE EXAM
REAL QUESTIONS AND CORRECT VERIFIED ANSWERS WITH
DETAILED RATIONALES (RELIABLE ANSWERS) CURRENT
UPDATED VERSION 2026 EDITION |GUARANTEED SUCCESS A+
|JUST RELEASED |INSTANT DOWNLOAD
1. A 68-year-old male presents with a 2-week history of progressive
dyspnea on exertion, orthopnea, and paroxysmal nocturnal dyspnea.
Physical examination reveals jugular venous distention, bibasilar
crackles, and an S3 gallop. What is the most common cause of an S3
heart sound?
A) Aortic stenosis
B) Hypertrophic cardiomyopathy
C) Congestive heart failure (CORRECT ANSWER)
D) Mitral regurgitation
Rationale: An S3 gallop occurs during early diastole due to rapid
ventricular filling and is most commonly associated with congestive
heart failure, though it can also be a normal finding in children and
young adults. An S3 in an older adult is a hallmark of elevated
ventricular filling pressures and systolic heart failure. Aortic stenosis
produces a systolic ejection murmur, hypertrophic cardiomyopathy
typically causes a systolic murmur that increases with Valsalva, and
mitral regurgitation is a holosystolic murmur.
,2. A 65-year-old man presents with progressive exertional dyspnea,
orthopnea, and bilateral lower extremity edema. He has a history of
hypertension and myocardial infarction. Physical exam reveals an S3
gallop and bibasilar crackles. What is the most likely diagnosis?
A) Chronic obstructive pulmonary disease
B) Congestive heart failure (CORRECT ANSWER)
C) Pulmonary embolism
D) Acute pericarditis
Rationale: The patient has classic signs of left-sided heart failure
including orthopnea, crackles, S3 gallop, and peripheral edema.
Prior MI and hypertension are major risk factors. COPD would
present with wheezing and prolonged expiration, while PE is more
acute and pericarditis typically presents with pleuritic chest pain and
a pericardial friction rub.
3. A 62-year-old woman with a history of hypertension presents with
sudden onset of "tearing" chest pain radiating to the interscapular
region. Her blood pressure is 180/100 mmHg in the right arm and
100/60 mmHg in the left arm. Which of the following is the most
appropriate initial diagnostic study?
A) Transthoracic echocardiogram
B) CT angiography of the chest (CORRECT ANSWER)
C) Chest X-ray
,D) Cardiac catheterization
Rationale: The presentation is classic for acute aortic dissection,
especially with the pulse differential and tearing pain. CT
angiography is the preferred initial imaging study for suspected aortic
dissection. Transthoracic echocardiography may miss a dissection of
the descending aorta. Chest X-ray (widened mediastinum) is neither
sensitive nor specific. Cardiac catheterization is not the first step and
could be dangerous if the dissection involves the coronary ostia.
4. A 65-year-old man presents to the emergency department with
crushing substernal chest pain that radiates to his left arm,
accompanied by diaphoresis and nausea. The pain began 2 hours
ago. An ECG shows ST-segment elevation in leads V1–V4. Which of
the following is the most appropriate immediate intervention?
A) Administer sublingual nitroglycerin
B) Start an IV infusion of alteplase
C) Initiate dual antiplatelet therapy and arrange for immediate
percutaneous coronary intervention (PCI) (CORRECT ANSWER)
D) Give IV metoprolol to lower the heart rate
Rationale: The patient presents with an acute ST-segment elevation
myocardial infarction (STEMI). Primary PCI is the preferred
reperfusion strategy when it can be performed within 90 minutes of
presentation. If PCI is unavailable, IV thrombolytics would be
considered; however, this is not the initial step. Dual antiplatelet
, therapy (aspirin plus a P2Y12 inhibitor) should be given as soon as
the diagnosis is made.
5. A 55-year-old male with a history of myocardial infarction
presents with a diastolic decrescendo murmur best heard at the left
upper sternal border. The murmur is most consistent with:
A) Aortic stenosis
B) Aortic regurgitation (CORRECT ANSWER)
C) Mitral stenosis
D) Pulmonic stenosis
Rationale: Aortic regurgitation produces an early decrescendo
diastolic murmur. It is best auscultated at the second left intercostal
space (left upper sternal border) with the patient leaning forward and
breath held in expiration.
6. A patient presents with substernal chest pressure when walking
two blocks, relieved with rest. ECG shows no ST changes. What is
the most appropriate initial diagnostic test?
A) Coronary angiography
B) Exercise stress test (if patient can exercise and ECG interpretable)
(CORRECT ANSWER)
C) CT angiography
D) Resting echocardiogram
