COMSAE Phase 2 BSA Form 119 – Comprehensive
Exam with Questions, Answers and Rationales
2026/2027 Update
Question 1
A 67-year-old man with a history of long-standing, poorly controlled hypertension presents to
the emergency department with the sudden onset of severe, tearing chest pain that radiates to his
back. His blood pressure is 190/110 mmHg in the right arm and 160/90 mmHg in the left arm. A
chest radiograph reveals a widened mediastinum.
What is the most appropriate initial management step?
A. Immediate coronary angiography
B. Intravenous heparin infusion
C. Intravenous esmolol administration
D. Emergent pericardiocentesis
E. Aspirin and clopidogrel
Correct Answer: C. Intravenous esmolol administration
Rationale:
The presentation of tearing chest pain radiating to the back, pulse/blood pressure differential
between arms, and a widened mediastinum is classic for an acute aortic dissection (Stanford
Type A or DeBakey Type I/II). The immediate pharmacological priority is to reduce aortic wall
shear stress by lowering blood pressure and heart rate using aggressive intravenous beta-
blockade (such as esmolol or labetalol). Anticoagulation or antiplatelet agents (such as aspirin
and heparin) are strictly contraindicated initially as they worsen hemorrhage into the false lumen.
Question 2
A 32-year-old woman presents to the clinic complaining of progressive fatigue, dark urine, and
mild jaundice over the past two weeks. Laboratory evaluations demonstrate an elevated lactate
dehydrogenase (LDH), an elevated indirect (unconjugated) bilirubin, a decreased haptoglobin
level, and a positive direct Coombs (antiglobulin) test.
Which of the following is the most likely underlying diagnosis?
, A. Hereditary spherocytosis
B. G6PD deficiency
C. Paroxysmal nocturnal hemoglobinuria
D. Warm autoimmune hemolytic anemia
E. Sickle cell disease
Correct Answer: D. Warm autoimmune hemolytic anemia
Rationale:
A positive direct Coombs test is the hallmark indicator of immune-mediated hemolytic anemia.
Warm autoimmune hemolytic anemia (WAIHA) is the most common form, typically mediated
by IgG antibodies that bind red blood cells at body temperature, leading to extravascular
hemolysis predominantly in the spleen. Laboratory findings of hemolytic anemia include
elevated LDH, increased indirect bilirubin, and low or undetectable haptoglobin due to binding
of free hemoglobin. Hereditary spherocytosis and G6PD deficiency typically present with a
negative direct Coombs test.
Question 3
A 54-year-old man with a history of heavy alcohol use is evaluated for progressive abdominal
swelling and confusion. He is found to have hepatic encephalopathy.
Which of the following neurotransmitters is primarily implicated in the pathogenesis of hepatic
encephalopathy due to decreased clearance of nitrogenous waste?
A. Dopamine
B. Serotonin
C. Gamma-aminobutyric acid
D. Acetylcholine
E. Norepinephrine
Correct Answer: C. Gamma-aminobutyric acid
Rationale: In liver failure, the liver fails to clear gut-derived nitrogenous wastes such as
ammonia. Elevated circulating ammonia crosses the blood-brain barrier and alters cerebral
neurotransmission, notably increasing gamma-aminobutyric acid tone and contributing to
astrocyte swelling and central nervous system depression.
,Question 4
A 47-year-old woman is brought to the emergency department with an acute-onset severe
headache, high fever, photophobia, and neck stiffness. Her temperature is 39.8°C. A lumbar
puncture is performed, revealing a cerebrospinal fluid (CSF) white blood cell count of 2200/UL
with 92% neutrophils, a glucose level of 18 mg/dL (serum glucose is 110 mg/dL), and a protein
level of 240 mg/dL. Gram stain of the CSF demonstrates gram-positive cocci in pairs.
Which of the following is the most appropriate empiric antimicrobial regimen?
A. Ceftriaxone plus vancomycin
B. Ampicillin plus gentamicin
C. Meropenem monotherapy
D. Vancomycin monotherapy
E. Penicillin G monotherapy
Correct Answer: A. Ceftriaxone plus vancomycin
Rationale:
The clinical presentation and CSF findings (neutrophilic predominance, low glucose ratio, high
protein) are diagnostic of acute bacterial meningitis. The Gram stain showing gram-positive
cocci in pairs points strongly toward Streptococcus pneumoniae. Because of widespread
resistance of pneumococcal strains to penicillin and cephalosporins, empiric coverage for
community-acquired bacterial meningitis in adults requires a combination of a third-generation
cephalosporin (such as ceftriaxone) to cover susceptible strains and vancomycin to ensure
coverage for penicillin-resistant S. pneumoniae.
Question 5
A 26-year-old man presents with acute, severe left-sided scrotal pain and associated nausea that
woke him from sleep an hour ago. Physical examination demonstrates that the left testis is
positioned higher in the hemiscrotum and has a transverse lie. Stroking the inner thigh fails to
elicit elevation of the testis on the affected side.
What is the most appropriate next step in the management of this patient?
A. Color Doppler ultrasound of the scrotum
B. Immediate urinalysis and urine culture
, C. Urgent surgical exploration and detorsion
D. Empiric broad-spectrum oral antibiotics
E. Manual detorsion attempt followed by outpatient urology referral
Correct Answer: C. Urgent surgical exploration and detorsion
Rationale:
The clinical presentation—acute severe scrotal pain, high-riding horizontal testis, and an absent
cremasteric reflex—is classic for testicular torsion. Testicular torsion is a time-sensitive surgical
emergency. When clinical suspicion is high, diagnostic imaging (such as ultrasound) should not
delay surgical intervention, as prolonged ischemia leads to irreversible testicular infarction and
loss of fertility potential. Surgical exploration with untwisting and bilateral orchidopexy is
mandatory.
Question 6
A 55-year-old man with a history of alcohol use disorder is brought to the emergency department
with severe epigastric pain radiating to his back, nausea, and vomiting. Serum lipase and
amylase levels are significantly elevated.
Which of the following is the most common local complication that can develop weeks after this
acute presentation?
A. Pancreatic pseudocyst
B. Pancreatic adenocarcinoma
C. Acute cholangitis
D. Splenic artery aneurysm
E. Duodenal obstruction
Correct Answer: A. Pancreatic pseudocyst
Rationale: Acute pancreatitis can lead to local fluid collections that lack an epithelial lining,
known as pancreatic pseudocysts. These collections typically mature over a period of four weeks
or more following the acute inflammatory episode and consist of pancreatic secretions,
granulation tissue, and necrotic debris.
Question 7
Exam with Questions, Answers and Rationales
2026/2027 Update
Question 1
A 67-year-old man with a history of long-standing, poorly controlled hypertension presents to
the emergency department with the sudden onset of severe, tearing chest pain that radiates to his
back. His blood pressure is 190/110 mmHg in the right arm and 160/90 mmHg in the left arm. A
chest radiograph reveals a widened mediastinum.
What is the most appropriate initial management step?
A. Immediate coronary angiography
B. Intravenous heparin infusion
C. Intravenous esmolol administration
D. Emergent pericardiocentesis
E. Aspirin and clopidogrel
Correct Answer: C. Intravenous esmolol administration
Rationale:
The presentation of tearing chest pain radiating to the back, pulse/blood pressure differential
between arms, and a widened mediastinum is classic for an acute aortic dissection (Stanford
Type A or DeBakey Type I/II). The immediate pharmacological priority is to reduce aortic wall
shear stress by lowering blood pressure and heart rate using aggressive intravenous beta-
blockade (such as esmolol or labetalol). Anticoagulation or antiplatelet agents (such as aspirin
and heparin) are strictly contraindicated initially as they worsen hemorrhage into the false lumen.
Question 2
A 32-year-old woman presents to the clinic complaining of progressive fatigue, dark urine, and
mild jaundice over the past two weeks. Laboratory evaluations demonstrate an elevated lactate
dehydrogenase (LDH), an elevated indirect (unconjugated) bilirubin, a decreased haptoglobin
level, and a positive direct Coombs (antiglobulin) test.
Which of the following is the most likely underlying diagnosis?
, A. Hereditary spherocytosis
B. G6PD deficiency
C. Paroxysmal nocturnal hemoglobinuria
D. Warm autoimmune hemolytic anemia
E. Sickle cell disease
Correct Answer: D. Warm autoimmune hemolytic anemia
Rationale:
A positive direct Coombs test is the hallmark indicator of immune-mediated hemolytic anemia.
Warm autoimmune hemolytic anemia (WAIHA) is the most common form, typically mediated
by IgG antibodies that bind red blood cells at body temperature, leading to extravascular
hemolysis predominantly in the spleen. Laboratory findings of hemolytic anemia include
elevated LDH, increased indirect bilirubin, and low or undetectable haptoglobin due to binding
of free hemoglobin. Hereditary spherocytosis and G6PD deficiency typically present with a
negative direct Coombs test.
Question 3
A 54-year-old man with a history of heavy alcohol use is evaluated for progressive abdominal
swelling and confusion. He is found to have hepatic encephalopathy.
Which of the following neurotransmitters is primarily implicated in the pathogenesis of hepatic
encephalopathy due to decreased clearance of nitrogenous waste?
A. Dopamine
B. Serotonin
C. Gamma-aminobutyric acid
D. Acetylcholine
E. Norepinephrine
Correct Answer: C. Gamma-aminobutyric acid
Rationale: In liver failure, the liver fails to clear gut-derived nitrogenous wastes such as
ammonia. Elevated circulating ammonia crosses the blood-brain barrier and alters cerebral
neurotransmission, notably increasing gamma-aminobutyric acid tone and contributing to
astrocyte swelling and central nervous system depression.
,Question 4
A 47-year-old woman is brought to the emergency department with an acute-onset severe
headache, high fever, photophobia, and neck stiffness. Her temperature is 39.8°C. A lumbar
puncture is performed, revealing a cerebrospinal fluid (CSF) white blood cell count of 2200/UL
with 92% neutrophils, a glucose level of 18 mg/dL (serum glucose is 110 mg/dL), and a protein
level of 240 mg/dL. Gram stain of the CSF demonstrates gram-positive cocci in pairs.
Which of the following is the most appropriate empiric antimicrobial regimen?
A. Ceftriaxone plus vancomycin
B. Ampicillin plus gentamicin
C. Meropenem monotherapy
D. Vancomycin monotherapy
E. Penicillin G monotherapy
Correct Answer: A. Ceftriaxone plus vancomycin
Rationale:
The clinical presentation and CSF findings (neutrophilic predominance, low glucose ratio, high
protein) are diagnostic of acute bacterial meningitis. The Gram stain showing gram-positive
cocci in pairs points strongly toward Streptococcus pneumoniae. Because of widespread
resistance of pneumococcal strains to penicillin and cephalosporins, empiric coverage for
community-acquired bacterial meningitis in adults requires a combination of a third-generation
cephalosporin (such as ceftriaxone) to cover susceptible strains and vancomycin to ensure
coverage for penicillin-resistant S. pneumoniae.
Question 5
A 26-year-old man presents with acute, severe left-sided scrotal pain and associated nausea that
woke him from sleep an hour ago. Physical examination demonstrates that the left testis is
positioned higher in the hemiscrotum and has a transverse lie. Stroking the inner thigh fails to
elicit elevation of the testis on the affected side.
What is the most appropriate next step in the management of this patient?
A. Color Doppler ultrasound of the scrotum
B. Immediate urinalysis and urine culture
, C. Urgent surgical exploration and detorsion
D. Empiric broad-spectrum oral antibiotics
E. Manual detorsion attempt followed by outpatient urology referral
Correct Answer: C. Urgent surgical exploration and detorsion
Rationale:
The clinical presentation—acute severe scrotal pain, high-riding horizontal testis, and an absent
cremasteric reflex—is classic for testicular torsion. Testicular torsion is a time-sensitive surgical
emergency. When clinical suspicion is high, diagnostic imaging (such as ultrasound) should not
delay surgical intervention, as prolonged ischemia leads to irreversible testicular infarction and
loss of fertility potential. Surgical exploration with untwisting and bilateral orchidopexy is
mandatory.
Question 6
A 55-year-old man with a history of alcohol use disorder is brought to the emergency department
with severe epigastric pain radiating to his back, nausea, and vomiting. Serum lipase and
amylase levels are significantly elevated.
Which of the following is the most common local complication that can develop weeks after this
acute presentation?
A. Pancreatic pseudocyst
B. Pancreatic adenocarcinoma
C. Acute cholangitis
D. Splenic artery aneurysm
E. Duodenal obstruction
Correct Answer: A. Pancreatic pseudocyst
Rationale: Acute pancreatitis can lead to local fluid collections that lack an epithelial lining,
known as pancreatic pseudocysts. These collections typically mature over a period of four weeks
or more following the acute inflammatory episode and consist of pancreatic secretions,
granulation tissue, and necrotic debris.
Question 7
