NSG 550: Advanced Diagnostic Reasoning
Comprehensive Exam 3: 200 Questions with Rationales
Section: Cardiovascular Diagnostics
Question 1: A 58-year-old male presents with acute substernal chest
pressure radiating to the left arm. An electrocardiogram (ECG) reveals
ST-elevation in leads II, III, and aVF. Which diagnostic modality is the
gold standard for defining coronary anatomy and establishing definitive
revascularization?
A. Computed Tomography Coronary Angiography (CTCA)
B. Invasive Coronary Angiography (ICA)
C. Stress Echocardiography
D. Myocardial Perfusion Imaging (MPI)
Rationale: Invasive Coronary Angiography remains the gold standard
for direct visualization of coronary artery stenosis, localization of plaque
rupture, and immediate intervention via percutaneous coronary
intervention (PCI) in acute ST-elevation myocardial infarction.
Question 2: A 65-year-old female with chronic heart failure presents
with worsening dyspnea and peripheral edema. Which biomarker is most
specific and sensitive for evaluating acute decompensated heart failure
and guiding therapeutic diuresis?
A. Creatine Kinase-MB (CK-MB)
B. High-Sensitivity Troponin T
C. N-terminal pro-B-type natriuretic peptide (NT-proBNP)
D. C-Reactive Protein (CRP)
, Rationale: NT-proBNP is released by ventricular myocytes in
response to myocardial stretch and wall stress. It serves as an essential
diagnostic and prognostic marker for heart failure, differentiating cardiac
dyspnea from pulmonary causes.
Question 3: An asymptomatic 45-year-old male is evaluated for
cardiovascular risk prior to starting a vigorous exercise program. His
baseline ECG is normal. Which non-invasive test is best suited to assess
for myocardial ischemia during physical stress?
A. Exercise Treadmill Testing (ETT)
B. Transthoracic Echocardiogram (TTE)
C. Holter Monitor
D. Cardiac MRI
Rationale: Exercise Treadmill Testing provides functional capacity,
hemodynamic response (blood pressure and heart rate), and ECG
changes indicative of ischemia in low-to-intermediate risk patients able
to exercise.
Question 4: A 58-year-old male presents with acute substernal chest
pressure radiating to the left arm. An electrocardiogram (ECG) reveals
ST-elevation in leads II, III, and aVF. Which diagnostic modality is the
gold standard for defining coronary anatomy and establishing definitive
revascularization?
A. Computed Tomography Coronary Angiography (CTCA)
B. Invasive Coronary Angiography (ICA)
C. Stress Echocardiography
D. Myocardial Perfusion Imaging (MPI)
, Rationale: Invasive Coronary Angiography remains the gold standard
for direct visualization of coronary artery stenosis, localization of plaque
rupture, and immediate intervention via percutaneous coronary
intervention (PCI) in acute ST-elevation myocardial infarction.
Question 5: A 65-year-old female with chronic heart failure presents
with worsening dyspnea and peripheral edema. Which biomarker is most
specific and sensitive for evaluating acute decompensated heart failure
and guiding therapeutic diuresis?
A. Creatine Kinase-MB (CK-MB)
B. High-Sensitivity Troponin T
C. N-terminal pro-B-type natriuretic peptide (NT-proBNP)
D. C-Reactive Protein (CRP)
Rationale: NT-proBNP is released by ventricular myocytes in
response to myocardial stretch and wall stress. It serves as an essential
diagnostic and prognostic marker for heart failure, differentiating cardiac
dyspnea from pulmonary causes.
Question 6: An asymptomatic 45-year-old male is evaluated for
cardiovascular risk prior to starting a vigorous exercise program. His
baseline ECG is normal. Which non-invasive test is best suited to assess
for myocardial ischemia during physical stress?
A. Exercise Treadmill Testing (ETT)
B. Transthoracic Echocardiogram (TTE)
C. Holter Monitor
D. Cardiac MRI
, Rationale: Exercise Treadmill Testing provides functional capacity,
hemodynamic response (blood pressure and heart rate), and ECG
changes indicative of ischemia in low-to-intermediate risk patients able
to exercise.
Question 7: A 58-year-old male presents with acute substernal chest
pressure radiating to the left arm. An electrocardiogram (ECG) reveals
ST-elevation in leads II, III, and aVF. Which diagnostic modality is the
gold standard for defining coronary anatomy and establishing definitive
revascularization?
A. Computed Tomography Coronary Angiography (CTCA)
B. Invasive Coronary Angiography (ICA)
C. Stress Echocardiography
D. Myocardial Perfusion Imaging (MPI)
Rationale: Invasive Coronary Angiography remains the gold standard
for direct visualization of coronary artery stenosis, localization of plaque
rupture, and immediate intervention via percutaneous coronary
intervention (PCI) in acute ST-elevation myocardial infarction.
Question 8: A 65-year-old female with chronic heart failure presents
with worsening dyspnea and peripheral edema. Which biomarker is most
specific and sensitive for evaluating acute decompensated heart failure
and guiding therapeutic diuresis?
A. Creatine Kinase-MB (CK-MB)
B. High-Sensitivity Troponin T
C. N-terminal pro-B-type natriuretic peptide (NT-proBNP)
D. C-Reactive Protein (CRP)