COMSAE PHASE 1 FORM 114 PRACTICE EXAM – QUESTIONS AND ANSWERS |
VERIFIED AND WELL DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED
PASS | LATEST EXAM UPDATE
Core Domains
1. Cardiovascular System
2. Pulmonary System
3. Gastrointestinal System
4. Musculoskeletal System
5. Neurology
6. Psychiatry and Behavioral Health
7. Pharmacology and Therapeutics
8. Ethics, Jurisprudence, and Patient Safety
9. Biostatistics and Epidemiology
10. Preventive Medicine and Public Health
Introduction
This comprehensive examination is designed to rigorously assess a candidate's
readiness for the COMSAE Phase 1, serving as a critical benchmark for medical
knowledge and clinical reasoning. The assessment evaluates a broad spectrum of
foundational and applied biomedical sciences, emphasizing the integration of
pathophysiological principles with clinical presentation. Questions are presented in
a multiple-choice and scenario-based format to simulate the complexity of real-
world clinical decision-making. Candidates will be challenged to apply their
understanding of disease processes, diagnostic strategies, pharmacological
interventions, and ethical considerations. The examination emphasizes the
application of core knowledge to patient-centered care, requiring the examinee to
prioritize differential diagnoses, select appropriate diagnostic tests, and determine
optimal management strategies. This structured approach ensures a robust
evaluation of critical thinking and clinical preparedness.
Section One: Questions 1–100
1. A 68-year-old male with a history of hypertension presents with sudden-
onset, severe substernal chest pain radiating to his left arm, accompanied by
diaphoresis and nausea. An ECG shows ST-segment elevation in leads V1-V4.
Which of the following is the most appropriate initial therapeutic intervention?
,A. Intravenous metoprolol
B. Sublingual nitroglycerin
C. Emergent percutaneous coronary intervention (PCI)
D. Intravenous heparin
🟢 C. Emergent percutaneous coronary intervention (PCI)
🔴 Explanation: The patient is presenting with an ST-segment elevation
myocardial infarction (STEMI) localized to the anterior wall. The standard of care
for STEMI is emergent reperfusion therapy, with PCI being the preferred method
if it can be performed within 90 minutes of first medical contact.
2. A 32-year-old female with a known history of systemic lupus erythematosus
(SLE) complains of progressive shortness of breath and pleuritic chest pain. A
chest X-ray reveals a moderate left-sided pleural effusion. Which of the
following findings is most characteristic of a pleural effusion caused by SLE?
A. Exudative with a low glucose level
B. Transudative with a high protein level
C. Exudative with a high complement level
D. Transudative with a low LDH level
🟢 A. Exudative with a low glucose level
🔴 Explanation: Pleural effusions in SLE are typically exudative. A low glucose
level in the pleural fluid is a classic finding, often associated with a high LDH and
low pH. This differentiates it from transudative effusions seen in heart failure or
cirrhosis.
3. A 75-year-old male with a history of chronic obstructive pulmonary disease
(COPD) is brought to the emergency department with confusion and lethargy.
His arterial blood gas (ABG) on room air reveals: pH 7.28, PaCO2 72 mmHg,
PaO2 55 mmHg, and HCO3- 32 mEq/L. What is the most appropriate initial step
in managing this patient's acid-base disturbance?
A. Administer intravenous sodium bicarbonate
B. Initiate non-invasive positive pressure ventilation (NIPPV)
C. Administer a bolus of intravenous fluids
D. Administer a loop diuretic
🟢 B. Initiate non-invasive positive pressure ventilation (NIPPPV)
,🔴 Explanation: The ABG shows a primary respiratory acidosis (elevated PaCO2)
with renal compensation (elevated bicarbonate). The patient's altered mental
status indicates severe hypercapnia. The most appropriate initial management is
to improve ventilation. NIPPV, such as BiPAP, is the first-line therapy for acute
hypercapnic respiratory failure in COPD patients, avoiding the complications of
intubation if possible.
4. A 55-year-old male with a history of cirrhosis presents with progressive
dyspnea and abdominal distension. A paracentesis reveals a serum-ascites
albumin gradient (SAAG) of 1.8 g/dL. Which of the following is the most likely
cause of his ascites?
A. Peritoneal carcinomatosis
B. Nephrotic syndrome
C. Portal hypertension
D. Tuberculous peritonitis
🟢 C. Portal hypertension
🔴 Explanation: A high SAAG (> 1.1 g/dL) indicates that the ascites is due to
portal hypertension. Cirrhosis is the most common cause of portal hypertension
and high-SAAG ascites. The other options are typically associated with low-SAAG
(exudative) ascites.
5. A 28-year-old male presents with an acute onset of severe low back pain
after lifting a heavy box. The pain is localized to the right paraspinal region and
radiates down the posterior aspect of his right leg. On examination, straight leg
raise is positive at 40 degrees. Which of the following is the most appropriate
next step in management?
A. Lumbar spine X-ray
B. Bed rest for 2 weeks
C. Oral corticosteroids
D. Referral for a lumbar spine MRI if symptoms fail to improve in 2 weeks
🟢 D. Referral for a lumbar spine MRI if symptoms fail to improve in 2 weeks
🔴 Explanation: The patient's presentation is consistent with an acute lumbar
radiculopathy, likely due to a herniated intervertebral disc. Initial management
should be conservative (pain control, activity modification). Imaging is not
necessary unless there are "red flag" signs or if symptoms do not improve after 4-
6 weeks of conservative therapy. However, an MRI is the study of choice if surgery
, is being considered, and a 2-week timeframe for referral is clinically appropriate
for severe symptoms.
6. A 45-year-old female presents with a 2-month history of progressive
weakness in her hands and feet. She also reports tingling sensations.
Examination reveals distal muscle wasting and areflexia. Her gait is steppage.
Which of the following is the most likely diagnosis?
A. Guillain-Barré syndrome
B. Charcot-Marie-Tooth disease
C. Multiple sclerosis
D. Amyotrophic lateral sclerosis
🟢 B. Charcot-Marie-Tooth disease
🔴 Explanation: The presentation of chronic, progressive distal muscle weakness
and wasting, sensory loss, and areflexia with steppage gait is classic for Charcot-
Marie-Tooth disease, a hereditary motor and sensory neuropathy. Guillain-Barré is
an acute, ascending paralysis. Multiple sclerosis is a central nervous system
demyelinating disease, and ALS involves both upper and lower motor neuron
signs.
7. A 22-year-old male is brought to the emergency department after a
generalized tonic-clonic seizure witnessed by his roommate. The patient has no
history of seizures. A CT scan of the head is unremarkable. A drug screen is
positive for cocaine. Which of the following is the most appropriate next step
in managing this patient's seizure?
A. Initiate long-term anticonvulsant therapy with phenytoin
B. Observe and discontinue use of cocaine
C. Administer intravenous lorazepam
D. Initiate carbamazepine
🟢 B. Observe and discontinue use of cocaine
🔴 Explanation: Cocaine can lower the seizure threshold, and a first-time seizure
in the setting of acute drug intoxication is typically a provoked seizure. The
primary management is to address the underlying cause and observe the patient.
Anticonvulsants are generally not indicated for an acute, provoked seizure unless
the patient has recurrent seizures after the offending agent is cleared.
8. A 62-year-old male with a history of major depressive disorder presents with
complaints of anhedonia, fatigue, and insomnia. He has been on a stable dose
VERIFIED AND WELL DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED
PASS | LATEST EXAM UPDATE
Core Domains
1. Cardiovascular System
2. Pulmonary System
3. Gastrointestinal System
4. Musculoskeletal System
5. Neurology
6. Psychiatry and Behavioral Health
7. Pharmacology and Therapeutics
8. Ethics, Jurisprudence, and Patient Safety
9. Biostatistics and Epidemiology
10. Preventive Medicine and Public Health
Introduction
This comprehensive examination is designed to rigorously assess a candidate's
readiness for the COMSAE Phase 1, serving as a critical benchmark for medical
knowledge and clinical reasoning. The assessment evaluates a broad spectrum of
foundational and applied biomedical sciences, emphasizing the integration of
pathophysiological principles with clinical presentation. Questions are presented in
a multiple-choice and scenario-based format to simulate the complexity of real-
world clinical decision-making. Candidates will be challenged to apply their
understanding of disease processes, diagnostic strategies, pharmacological
interventions, and ethical considerations. The examination emphasizes the
application of core knowledge to patient-centered care, requiring the examinee to
prioritize differential diagnoses, select appropriate diagnostic tests, and determine
optimal management strategies. This structured approach ensures a robust
evaluation of critical thinking and clinical preparedness.
Section One: Questions 1–100
1. A 68-year-old male with a history of hypertension presents with sudden-
onset, severe substernal chest pain radiating to his left arm, accompanied by
diaphoresis and nausea. An ECG shows ST-segment elevation in leads V1-V4.
Which of the following is the most appropriate initial therapeutic intervention?
,A. Intravenous metoprolol
B. Sublingual nitroglycerin
C. Emergent percutaneous coronary intervention (PCI)
D. Intravenous heparin
🟢 C. Emergent percutaneous coronary intervention (PCI)
🔴 Explanation: The patient is presenting with an ST-segment elevation
myocardial infarction (STEMI) localized to the anterior wall. The standard of care
for STEMI is emergent reperfusion therapy, with PCI being the preferred method
if it can be performed within 90 minutes of first medical contact.
2. A 32-year-old female with a known history of systemic lupus erythematosus
(SLE) complains of progressive shortness of breath and pleuritic chest pain. A
chest X-ray reveals a moderate left-sided pleural effusion. Which of the
following findings is most characteristic of a pleural effusion caused by SLE?
A. Exudative with a low glucose level
B. Transudative with a high protein level
C. Exudative with a high complement level
D. Transudative with a low LDH level
🟢 A. Exudative with a low glucose level
🔴 Explanation: Pleural effusions in SLE are typically exudative. A low glucose
level in the pleural fluid is a classic finding, often associated with a high LDH and
low pH. This differentiates it from transudative effusions seen in heart failure or
cirrhosis.
3. A 75-year-old male with a history of chronic obstructive pulmonary disease
(COPD) is brought to the emergency department with confusion and lethargy.
His arterial blood gas (ABG) on room air reveals: pH 7.28, PaCO2 72 mmHg,
PaO2 55 mmHg, and HCO3- 32 mEq/L. What is the most appropriate initial step
in managing this patient's acid-base disturbance?
A. Administer intravenous sodium bicarbonate
B. Initiate non-invasive positive pressure ventilation (NIPPV)
C. Administer a bolus of intravenous fluids
D. Administer a loop diuretic
🟢 B. Initiate non-invasive positive pressure ventilation (NIPPPV)
,🔴 Explanation: The ABG shows a primary respiratory acidosis (elevated PaCO2)
with renal compensation (elevated bicarbonate). The patient's altered mental
status indicates severe hypercapnia. The most appropriate initial management is
to improve ventilation. NIPPV, such as BiPAP, is the first-line therapy for acute
hypercapnic respiratory failure in COPD patients, avoiding the complications of
intubation if possible.
4. A 55-year-old male with a history of cirrhosis presents with progressive
dyspnea and abdominal distension. A paracentesis reveals a serum-ascites
albumin gradient (SAAG) of 1.8 g/dL. Which of the following is the most likely
cause of his ascites?
A. Peritoneal carcinomatosis
B. Nephrotic syndrome
C. Portal hypertension
D. Tuberculous peritonitis
🟢 C. Portal hypertension
🔴 Explanation: A high SAAG (> 1.1 g/dL) indicates that the ascites is due to
portal hypertension. Cirrhosis is the most common cause of portal hypertension
and high-SAAG ascites. The other options are typically associated with low-SAAG
(exudative) ascites.
5. A 28-year-old male presents with an acute onset of severe low back pain
after lifting a heavy box. The pain is localized to the right paraspinal region and
radiates down the posterior aspect of his right leg. On examination, straight leg
raise is positive at 40 degrees. Which of the following is the most appropriate
next step in management?
A. Lumbar spine X-ray
B. Bed rest for 2 weeks
C. Oral corticosteroids
D. Referral for a lumbar spine MRI if symptoms fail to improve in 2 weeks
🟢 D. Referral for a lumbar spine MRI if symptoms fail to improve in 2 weeks
🔴 Explanation: The patient's presentation is consistent with an acute lumbar
radiculopathy, likely due to a herniated intervertebral disc. Initial management
should be conservative (pain control, activity modification). Imaging is not
necessary unless there are "red flag" signs or if symptoms do not improve after 4-
6 weeks of conservative therapy. However, an MRI is the study of choice if surgery
, is being considered, and a 2-week timeframe for referral is clinically appropriate
for severe symptoms.
6. A 45-year-old female presents with a 2-month history of progressive
weakness in her hands and feet. She also reports tingling sensations.
Examination reveals distal muscle wasting and areflexia. Her gait is steppage.
Which of the following is the most likely diagnosis?
A. Guillain-Barré syndrome
B. Charcot-Marie-Tooth disease
C. Multiple sclerosis
D. Amyotrophic lateral sclerosis
🟢 B. Charcot-Marie-Tooth disease
🔴 Explanation: The presentation of chronic, progressive distal muscle weakness
and wasting, sensory loss, and areflexia with steppage gait is classic for Charcot-
Marie-Tooth disease, a hereditary motor and sensory neuropathy. Guillain-Barré is
an acute, ascending paralysis. Multiple sclerosis is a central nervous system
demyelinating disease, and ALS involves both upper and lower motor neuron
signs.
7. A 22-year-old male is brought to the emergency department after a
generalized tonic-clonic seizure witnessed by his roommate. The patient has no
history of seizures. A CT scan of the head is unremarkable. A drug screen is
positive for cocaine. Which of the following is the most appropriate next step
in managing this patient's seizure?
A. Initiate long-term anticonvulsant therapy with phenytoin
B. Observe and discontinue use of cocaine
C. Administer intravenous lorazepam
D. Initiate carbamazepine
🟢 B. Observe and discontinue use of cocaine
🔴 Explanation: Cocaine can lower the seizure threshold, and a first-time seizure
in the setting of acute drug intoxication is typically a provoked seizure. The
primary management is to address the underlying cause and observe the patient.
Anticonvulsants are generally not indicated for an acute, provoked seizure unless
the patient has recurrent seizures after the offending agent is cleared.
8. A 62-year-old male with a history of major depressive disorder presents with
complaints of anhedonia, fatigue, and insomnia. He has been on a stable dose
