, Question 1
A patient with a history of GERD reports new-onset dry cough and hoarseness.
Which pathophysiologic mechanism best explains these extraesophageal
symptoms?
A. Direct acid stimulation of the vocal cords and laryngopharyngeal
reflux
B. Vagally mediated reflex bronchoconstriction from distal esophageal
acid exposure
C. Aspiration of gastric contents into the tracheobronchial tree
D. Hypersensitivity of the cough reflex due to chronic mucosal
inflammation
Correct Answer: B - Vagally mediated reflex bronchoconstriction
from distal esophageal acid exposure
RATIONALE
Extraesophageal GERD symptoms such as cough and hoarseness are
primarily due to vagally mediated reflex bronchoconstriction triggered
by acid in the distal esophagus, not direct acid contact.
Laryngopharyngeal reflux can cause direct irritation (A) but is less
common; aspiration (C) is rare and usually causes more severe
pulmonary symptoms; hypersensitivity (D) is a secondary mechanism.
Question 2
A patient presents with acute monoarticular joint pain and swelling. Synovial
fluid analysis shows needle-shaped, negatively birefringent crystals. Which
condition is most likely?
A. Gout
B. Pseudogout
C. Septic arthritis
D. Reactive arthritis
Correct Answer: A - Gout
Page 2
, RATIONALE
Negatively birefringent needle-shaped crystals are monosodium urate,
diagnostic of gout. Pseudogout (B) shows positively birefringent
rhomboid crystals (calcium pyrophosphate). Septic arthritis (C) would
show purulent fluid with positive cultures and no crystals. Reactive
arthritis (D) is inflammatory but not crystal-induced.
Question 3
Which finding on a 12-lead ECG is most specific for acute ST-elevation
myocardial infarction (STEMI) in the presence of left bundle branch block
(LBBB)?
A. Concordant ST elevation 1 mm in leads with positive QRS
B. Discordant ST elevation 1 mm in leads with negative QRS
C. Sgarbossa criterion of ST elevation 1 mm concordant with QRS
D. Concordant ST depression 1 mm in leads V1-V3
Correct Answer: C - Sgarbossa criterion of ST elevation 1 mm
concordant with QRS
RATIONALE
The Sgarbossa criteria are used to diagnose STEMI in the setting of
LBBB; the most specific is concordant ST elevation 1 mm (C).
Discordant ST elevation (B) is common in LBBB and not specific.
Concordant ST depression in V1-V3 (D) is another Sgarbossa criterion
but less specific than concordant ST elevation. Option A is a
simplified description but not the formal criterion.
Question 4
A patient with heart failure with reduced ejection fraction (HFrEF) is started on
sacubitril/valsartan. Which monitoring parameter is most critical during
initiation and titration?
A. Serum potassium and renal function
B. Liver function tests
Page 3
A patient with a history of GERD reports new-onset dry cough and hoarseness.
Which pathophysiologic mechanism best explains these extraesophageal
symptoms?
A. Direct acid stimulation of the vocal cords and laryngopharyngeal
reflux
B. Vagally mediated reflex bronchoconstriction from distal esophageal
acid exposure
C. Aspiration of gastric contents into the tracheobronchial tree
D. Hypersensitivity of the cough reflex due to chronic mucosal
inflammation
Correct Answer: B - Vagally mediated reflex bronchoconstriction
from distal esophageal acid exposure
RATIONALE
Extraesophageal GERD symptoms such as cough and hoarseness are
primarily due to vagally mediated reflex bronchoconstriction triggered
by acid in the distal esophagus, not direct acid contact.
Laryngopharyngeal reflux can cause direct irritation (A) but is less
common; aspiration (C) is rare and usually causes more severe
pulmonary symptoms; hypersensitivity (D) is a secondary mechanism.
Question 2
A patient presents with acute monoarticular joint pain and swelling. Synovial
fluid analysis shows needle-shaped, negatively birefringent crystals. Which
condition is most likely?
A. Gout
B. Pseudogout
C. Septic arthritis
D. Reactive arthritis
Correct Answer: A - Gout
Page 2
, RATIONALE
Negatively birefringent needle-shaped crystals are monosodium urate,
diagnostic of gout. Pseudogout (B) shows positively birefringent
rhomboid crystals (calcium pyrophosphate). Septic arthritis (C) would
show purulent fluid with positive cultures and no crystals. Reactive
arthritis (D) is inflammatory but not crystal-induced.
Question 3
Which finding on a 12-lead ECG is most specific for acute ST-elevation
myocardial infarction (STEMI) in the presence of left bundle branch block
(LBBB)?
A. Concordant ST elevation 1 mm in leads with positive QRS
B. Discordant ST elevation 1 mm in leads with negative QRS
C. Sgarbossa criterion of ST elevation 1 mm concordant with QRS
D. Concordant ST depression 1 mm in leads V1-V3
Correct Answer: C - Sgarbossa criterion of ST elevation 1 mm
concordant with QRS
RATIONALE
The Sgarbossa criteria are used to diagnose STEMI in the setting of
LBBB; the most specific is concordant ST elevation 1 mm (C).
Discordant ST elevation (B) is common in LBBB and not specific.
Concordant ST depression in V1-V3 (D) is another Sgarbossa criterion
but less specific than concordant ST elevation. Option A is a
simplified description but not the formal criterion.
Question 4
A patient with heart failure with reduced ejection fraction (HFrEF) is started on
sacubitril/valsartan. Which monitoring parameter is most critical during
initiation and titration?
A. Serum potassium and renal function
B. Liver function tests
Page 3
