NR 603 Week 1 | Exam Questions & Rationalized
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Q51. A 58-year-old male presents with substernal chest pressure radiating to the jaw, occurring with
exertion and relieved by rest. What is the most likely diagnosis?
A) Unstable angina
B) Stable angina
C) Acute myocardial infarction
D) Pericarditis
Answer: B) Stable angina
Rationale: Stable angina is predictable chest pain triggered by exertion or stress, relieved by rest or
nitroglycerin, and associated with fixed coronary artery stenosis.
Q52. Which finding on ECG is most specific for acute myocardial infarction?
A) Peaked T waves
B) ST-segment depression
C) ST-segment elevation
D) Prolonged PR interval
Answer: C) ST-segment elevation
Rationale: ST-segment elevation in two contiguous leads indicates transmural myocardial infarction
(STEMI) requiring emergent reperfusion therapy.
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,Q53. A patient with heart failure presents with jugular venous distension, peripheral edema, and
hepatomegaly. What type of heart failure is this?
A) Left-sided heart failure
B) Right-sided heart failure
C) High-output heart failure
D) Diastolic heart failure
Answer: B) Right-sided heart failure
Rationale: Right-sided heart failure presents with systemic congestion signs: JVD, peripheral edema,
ascites, and hepatomegaly due to fluid backup into the venous system.
Q54. What is the first-line medication for chronic stable angina?
A) Aspirin
B) Nitroglycerin PRN
C) Beta-blocker (e.g., metoprolol)
D) Calcium channel blocker
Answer: C) Beta-blocker (e.g., metoprolol)
Rationale: Beta-blockers reduce myocardial oxygen demand by decreasing heart rate and contractility,
improving survival and reducing angina frequency in stable CAD.
Q55. An 82-year-old female presents with sudden onset of severe tearing chest pain radiating to the
back. Blood pressure is 160/90 in the right arm and 100/60 in the left arm. What is the most likely
diagnosis?
A) Acute myocardial infarction
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, B) Pulmonary embolism
C) Aortic dissection
D) Pericarditis
Answer: C) Aortic dissection
Rationale: Aortic dissection presents with sudden, severe tearing chest or back pain and pulse deficits or
blood pressure differences between arms. Immediate CT angiography is diagnostic.
Q56. What is the most common cause of infective endocarditis in IV drug users?
A) Streptococcus viridans
B) Staphylococcus aureus
C) Enterococcus faecalis
D) Candida albicans
Answer: B) Staphylococcus aureus
Rationale: S. aureus is the most common cause of infective endocarditis in IV drug users, often affecting
the tricuspid valve and presenting with septic pulmonary emboli.
Q57. A patient with chronic atrial fibrillation is not on anticoagulation and presents with acute left arm
weakness and aphasia. What is the most likely diagnosis?
A) Hemorrhagic stroke
B) Ischemic stroke
C) Transient ischemic attack (TIA)
D) Subarachnoid hemorrhage
Answer: B) Ischemic stroke
3|Page SUCCESS!!!
Answers (100% verified) || Newest Update 2026 |
100% Guaranteed Pass
Q51. A 58-year-old male presents with substernal chest pressure radiating to the jaw, occurring with
exertion and relieved by rest. What is the most likely diagnosis?
A) Unstable angina
B) Stable angina
C) Acute myocardial infarction
D) Pericarditis
Answer: B) Stable angina
Rationale: Stable angina is predictable chest pain triggered by exertion or stress, relieved by rest or
nitroglycerin, and associated with fixed coronary artery stenosis.
Q52. Which finding on ECG is most specific for acute myocardial infarction?
A) Peaked T waves
B) ST-segment depression
C) ST-segment elevation
D) Prolonged PR interval
Answer: C) ST-segment elevation
Rationale: ST-segment elevation in two contiguous leads indicates transmural myocardial infarction
(STEMI) requiring emergent reperfusion therapy.
1|Page SUCCESS!!!
,Q53. A patient with heart failure presents with jugular venous distension, peripheral edema, and
hepatomegaly. What type of heart failure is this?
A) Left-sided heart failure
B) Right-sided heart failure
C) High-output heart failure
D) Diastolic heart failure
Answer: B) Right-sided heart failure
Rationale: Right-sided heart failure presents with systemic congestion signs: JVD, peripheral edema,
ascites, and hepatomegaly due to fluid backup into the venous system.
Q54. What is the first-line medication for chronic stable angina?
A) Aspirin
B) Nitroglycerin PRN
C) Beta-blocker (e.g., metoprolol)
D) Calcium channel blocker
Answer: C) Beta-blocker (e.g., metoprolol)
Rationale: Beta-blockers reduce myocardial oxygen demand by decreasing heart rate and contractility,
improving survival and reducing angina frequency in stable CAD.
Q55. An 82-year-old female presents with sudden onset of severe tearing chest pain radiating to the
back. Blood pressure is 160/90 in the right arm and 100/60 in the left arm. What is the most likely
diagnosis?
A) Acute myocardial infarction
2|Page SUCCESS!!!
, B) Pulmonary embolism
C) Aortic dissection
D) Pericarditis
Answer: C) Aortic dissection
Rationale: Aortic dissection presents with sudden, severe tearing chest or back pain and pulse deficits or
blood pressure differences between arms. Immediate CT angiography is diagnostic.
Q56. What is the most common cause of infective endocarditis in IV drug users?
A) Streptococcus viridans
B) Staphylococcus aureus
C) Enterococcus faecalis
D) Candida albicans
Answer: B) Staphylococcus aureus
Rationale: S. aureus is the most common cause of infective endocarditis in IV drug users, often affecting
the tricuspid valve and presenting with septic pulmonary emboli.
Q57. A patient with chronic atrial fibrillation is not on anticoagulation and presents with acute left arm
weakness and aphasia. What is the most likely diagnosis?
A) Hemorrhagic stroke
B) Ischemic stroke
C) Transient ischemic attack (TIA)
D) Subarachnoid hemorrhage
Answer: B) Ischemic stroke
3|Page SUCCESS!!!
