NURS 6550 FINAL EXAM 300 ACTUAL QUESTIONS AND
CORRECT ANSWERS WITH RATIONALE LATEST UPDATE
ALREADY GRADED A+ ASSURED PASS
This comprehensive set of 300 questions is meticulously designed for the
NURS 6550 final exam, focusing on advanced practice care of adults in acute
settings. It covers critical content areas including cardiovascular emergencies,
renal failure, endocrine disorders, respiratory conditions, and infectious
diseases. Each question is crafted to test clinical reasoning and application of
evidence-based guidelines. The detailed rationales reinforce understanding by
explaining correct answers and distinguishing them from distractors. This
resource is ideal for exam preparation, helping you solidify your knowledge of
pathophysiology, pharmacology, and advanced clinical management. Use it to
assess your readiness and strengthen your diagnostic skills for acute care
scenarios.
1. A 68-year-old male with a history of hypertension presents with sudden, sharp,
tearing chest pain radiating to the back. His blood pressure is 160/90 mmHg in the
right arm and 100/60 mmHg in the left arm. What is the most appropriate initial
diagnostic test?
A) 12-lead ECG
B) Chest X-ray
C) CT angiography of the chest
D) Transthoracic echocardiogram
Answer: C) CT angiography of the chest
Rationale: The presentation is classic for acute aortic dissection. CT angiography is
the gold standard for rapid diagnosis, as it identifies the intimal flap and the extent
of the dissection .
2. A patient with chronic heart failure with reduced ejection fraction (HFrEF) is on
a maximally tolerated dose of ACE inhibitor, beta-blocker, and spironolactone. He
remains NYHA Class III with an EF of 30%. Which medication should be added
next?
,A) Digoxin
B) Sacubitril/valsartan (Entresto)
C) Hydralazine/isosorbide dinitrate
D) Ivabradine
Answer: B) Sacubitril/valsartan (Entresto)
Rationale: Sacubitril/valsartan (an ARNI) is now recommended as first-line
therapy for HFrEF in patients who remain symptomatic despite optimal medical
therapy, effectively replacing ACE inhibitors in this population .
3. Which ECG finding is most specific for acute pericarditis?
A) Diffuse ST-segment depression
B) Diffuse ST-segment elevation with PR-segment depression
C) Q waves in leads II, III, and aVF
D) Tall, peaked T waves
Answer: B) Diffuse ST-segment elevation with PR-segment depression
Rationale: Acute pericarditis is characterized by diffuse ST elevations (concave
up) and PR segment depression, reflecting atrial injury. These findings help
distinguish it from other causes of chest pain .
4. A 72-year-old female presents with syncope. Her ECG shows a heart rate of 38
bpm, regular, with no P waves and a wide QRS complex. What is the rhythm?
A) Atrial fibrillation with a slow ventricular response
B) Third-degree AV block with a junctional escape rhythm
C) Third-degree AV block with a ventricular escape rhythm
D) Sinus bradycardia
Answer: C) Third-degree AV block with a ventricular escape rhythm
Rationale: The absence of P waves, a regular rhythm, and a wide QRS indicate a
ventricular escape rhythm. This is characteristic of a complete heart block where
the escape focus is below the AV node, which is a life-threatening rhythm .
5. What is the first-line antiarrhythmic for stable monomorphic ventricular
tachycardia (VT) in a patient with a structurally normal heart?
A) Amiodarone
B) Lidocaine
C) Procainamide
D) Adenosine
Answer: C) Procainamide
Rationale: Procainamide is the first-line agent for stable monomorphic VT.
Amiodarone is used if procainamide is ineffective or contraindicated .
,6. A 65-year-old male with a history of coronary artery disease presents with chest
pain and a new systolic murmur at the apex that radiates to the axilla. What is the
most likely diagnosis?
A) Aortic stenosis
B) Mitral stenosis
C) Mitral regurgitation
D) Ventricular septal defect
Answer: C) Mitral regurgitation
Rationale: A new systolic murmur at the apex radiating to the axilla is classic for
acute mitral regurgitation. This is often caused by papillary muscle dysfunction or
rupture following an acute myocardial infarction.
7. Which of the following is the most common valvular heart disease in the
elderly?
A) Mitral regurgitation
B) Aortic stenosis
C) Aortic regurgitation
D) Mitral stenosis
Answer: B) Aortic stenosis
Rationale: Aortic stenosis is the most common valvular heart disease in the elderly,
typically due to calcific degeneration of a tricuspid or congenitally bicuspid valve .
8. A patient with a history of hypertension presents with a sudden onset of severe
headache, nausea, and vomiting. Blood pressure is 220/120 mmHg. What is the
most appropriate immediate management?
A) Oral clonidine
B) Sublingual nifedipine
C) IV labetalol or IV nicardipine
D) Oral captopril
Answer: C) IV labetalol or IV nicardipine
Rationale: This presentation suggests a hypertensive emergency with end-organ
damage (e.g., encephalopathy). The goal is to reduce mean arterial pressure by no
more than 20-25% within the first hour using IV agents like labetalol or
nicardipine for precise control .
9. Which of the following is an angina equivalent in women?
A) Classic substernal chest pain
B) Exertional dyspnea
C) Radiating pain to the left arm
D) Pain relieved by rest
, Answer: B) Exertional dyspnea
Rationale: Atypical presentations are more common in women. Angina equivalents
include shortness of breath, fatigue, nausea, or jaw pain, which occur due to
ischemia without classic chest pain .
10. A 55-year-old post-menopausal woman with a history of hypertension
complains of jaw pain on heavy exertion. She has no chest pain. EKG is normal
sinus rhythm without ST-segment abnormalities. What is the most appropriate next
step?
A) Exercise stress test
B) Pharmacologic stress test
C) Coronary angiography
D) Referral to a dentist
Answer: A) Exercise stress test
Rationale: Jaw pain on exertion is an angina equivalent, suggesting possible
ischemic heart disease. In a patient who can exercise and has a normal EKG, an
exercise stress test is an appropriate initial test to evaluate for inducible ischemia .
11. A patient with acute decompensated heart failure is noted to have a third heart
sound (S3). What does this finding indicate?
A) Elevated left ventricular filling pressure
B) Aortic stenosis
C) Pulmonary hypertension
D) Mitral valve prolapse
Answer: A) Elevated left ventricular filling pressure
Rationale: An S3 gallop is caused by rapid deceleration of blood into a non-
compliant left ventricle during early diastole. It is a hallmark of elevated filling
pressures and volume overload in heart failure .
12. Which medication is the first-line treatment for stable angina?
A) Aspirin
B) Nitroglycerin
C) Beta-blockers
D) Calcium channel blockers
Answer: C) Beta-blockers
Rationale: Beta-blockers are the first-line therapy for chronic stable angina because
they reduce myocardial oxygen demand by decreasing heart rate, contractility, and
blood pressure, thus improving symptoms and reducing mortality post-MI.
CORRECT ANSWERS WITH RATIONALE LATEST UPDATE
ALREADY GRADED A+ ASSURED PASS
This comprehensive set of 300 questions is meticulously designed for the
NURS 6550 final exam, focusing on advanced practice care of adults in acute
settings. It covers critical content areas including cardiovascular emergencies,
renal failure, endocrine disorders, respiratory conditions, and infectious
diseases. Each question is crafted to test clinical reasoning and application of
evidence-based guidelines. The detailed rationales reinforce understanding by
explaining correct answers and distinguishing them from distractors. This
resource is ideal for exam preparation, helping you solidify your knowledge of
pathophysiology, pharmacology, and advanced clinical management. Use it to
assess your readiness and strengthen your diagnostic skills for acute care
scenarios.
1. A 68-year-old male with a history of hypertension presents with sudden, sharp,
tearing chest pain radiating to the back. His blood pressure is 160/90 mmHg in the
right arm and 100/60 mmHg in the left arm. What is the most appropriate initial
diagnostic test?
A) 12-lead ECG
B) Chest X-ray
C) CT angiography of the chest
D) Transthoracic echocardiogram
Answer: C) CT angiography of the chest
Rationale: The presentation is classic for acute aortic dissection. CT angiography is
the gold standard for rapid diagnosis, as it identifies the intimal flap and the extent
of the dissection .
2. A patient with chronic heart failure with reduced ejection fraction (HFrEF) is on
a maximally tolerated dose of ACE inhibitor, beta-blocker, and spironolactone. He
remains NYHA Class III with an EF of 30%. Which medication should be added
next?
,A) Digoxin
B) Sacubitril/valsartan (Entresto)
C) Hydralazine/isosorbide dinitrate
D) Ivabradine
Answer: B) Sacubitril/valsartan (Entresto)
Rationale: Sacubitril/valsartan (an ARNI) is now recommended as first-line
therapy for HFrEF in patients who remain symptomatic despite optimal medical
therapy, effectively replacing ACE inhibitors in this population .
3. Which ECG finding is most specific for acute pericarditis?
A) Diffuse ST-segment depression
B) Diffuse ST-segment elevation with PR-segment depression
C) Q waves in leads II, III, and aVF
D) Tall, peaked T waves
Answer: B) Diffuse ST-segment elevation with PR-segment depression
Rationale: Acute pericarditis is characterized by diffuse ST elevations (concave
up) and PR segment depression, reflecting atrial injury. These findings help
distinguish it from other causes of chest pain .
4. A 72-year-old female presents with syncope. Her ECG shows a heart rate of 38
bpm, regular, with no P waves and a wide QRS complex. What is the rhythm?
A) Atrial fibrillation with a slow ventricular response
B) Third-degree AV block with a junctional escape rhythm
C) Third-degree AV block with a ventricular escape rhythm
D) Sinus bradycardia
Answer: C) Third-degree AV block with a ventricular escape rhythm
Rationale: The absence of P waves, a regular rhythm, and a wide QRS indicate a
ventricular escape rhythm. This is characteristic of a complete heart block where
the escape focus is below the AV node, which is a life-threatening rhythm .
5. What is the first-line antiarrhythmic for stable monomorphic ventricular
tachycardia (VT) in a patient with a structurally normal heart?
A) Amiodarone
B) Lidocaine
C) Procainamide
D) Adenosine
Answer: C) Procainamide
Rationale: Procainamide is the first-line agent for stable monomorphic VT.
Amiodarone is used if procainamide is ineffective or contraindicated .
,6. A 65-year-old male with a history of coronary artery disease presents with chest
pain and a new systolic murmur at the apex that radiates to the axilla. What is the
most likely diagnosis?
A) Aortic stenosis
B) Mitral stenosis
C) Mitral regurgitation
D) Ventricular septal defect
Answer: C) Mitral regurgitation
Rationale: A new systolic murmur at the apex radiating to the axilla is classic for
acute mitral regurgitation. This is often caused by papillary muscle dysfunction or
rupture following an acute myocardial infarction.
7. Which of the following is the most common valvular heart disease in the
elderly?
A) Mitral regurgitation
B) Aortic stenosis
C) Aortic regurgitation
D) Mitral stenosis
Answer: B) Aortic stenosis
Rationale: Aortic stenosis is the most common valvular heart disease in the elderly,
typically due to calcific degeneration of a tricuspid or congenitally bicuspid valve .
8. A patient with a history of hypertension presents with a sudden onset of severe
headache, nausea, and vomiting. Blood pressure is 220/120 mmHg. What is the
most appropriate immediate management?
A) Oral clonidine
B) Sublingual nifedipine
C) IV labetalol or IV nicardipine
D) Oral captopril
Answer: C) IV labetalol or IV nicardipine
Rationale: This presentation suggests a hypertensive emergency with end-organ
damage (e.g., encephalopathy). The goal is to reduce mean arterial pressure by no
more than 20-25% within the first hour using IV agents like labetalol or
nicardipine for precise control .
9. Which of the following is an angina equivalent in women?
A) Classic substernal chest pain
B) Exertional dyspnea
C) Radiating pain to the left arm
D) Pain relieved by rest
, Answer: B) Exertional dyspnea
Rationale: Atypical presentations are more common in women. Angina equivalents
include shortness of breath, fatigue, nausea, or jaw pain, which occur due to
ischemia without classic chest pain .
10. A 55-year-old post-menopausal woman with a history of hypertension
complains of jaw pain on heavy exertion. She has no chest pain. EKG is normal
sinus rhythm without ST-segment abnormalities. What is the most appropriate next
step?
A) Exercise stress test
B) Pharmacologic stress test
C) Coronary angiography
D) Referral to a dentist
Answer: A) Exercise stress test
Rationale: Jaw pain on exertion is an angina equivalent, suggesting possible
ischemic heart disease. In a patient who can exercise and has a normal EKG, an
exercise stress test is an appropriate initial test to evaluate for inducible ischemia .
11. A patient with acute decompensated heart failure is noted to have a third heart
sound (S3). What does this finding indicate?
A) Elevated left ventricular filling pressure
B) Aortic stenosis
C) Pulmonary hypertension
D) Mitral valve prolapse
Answer: A) Elevated left ventricular filling pressure
Rationale: An S3 gallop is caused by rapid deceleration of blood into a non-
compliant left ventricle during early diastole. It is a hallmark of elevated filling
pressures and volume overload in heart failure .
12. Which medication is the first-line treatment for stable angina?
A) Aspirin
B) Nitroglycerin
C) Beta-blockers
D) Calcium channel blockers
Answer: C) Beta-blockers
Rationale: Beta-blockers are the first-line therapy for chronic stable angina because
they reduce myocardial oxygen demand by decreasing heart rate, contractility, and
blood pressure, thus improving symptoms and reducing mortality post-MI.
