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MED-SURG NURSING: 2026 COMPREHENSIVE
CASE-BASED EXAM REVIEW & TEST BANK
High-Yield Q&A with Clinical Rationales
Updated for NCLEX-RN®, CMSRN®, and Med-Surg
Certification Examinations
1. CARDIOVASCULAR SYSTEM
Case Study 1: Acute Myocardial Infarction
Scenario: A 62-year-old male presents to the emergency department
with crushing substernal chest pain radiating to the left arm, diaphoresis,
and shortness of breath. Symptoms began 45 minutes ago. ECG shows
ST-segment elevation in leads V1-V4. Vital signs: BP 150/90, HR 110,
RR 22, O2 sat 94% on room air.
Question 1
What is the priority nursing action for this patient?
A. Obtain a 12-lead ECG
B. Administer sublingual nitroglycerin
C. Apply oxygen via nasal cannula
D. Establish IV access
Answer: A. Obtain a 12-lead ECG
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Rationale: For a patient with suspected acute myocardial infarction
(AMI), the priority is to obtain a 12-lead ECG within 10 minutes of
arrival to confirm STEMI and guide reperfusion therapy. While oxygen,
nitroglycerin, and IV access are important, ECG confirmation is time-
sensitive because "door-to-balloon" time should be ≤90 minutes. The
ECG shows ST elevation in V1-V4, indicating anterior wall MI.
Nursing Tip: Anterior wall MI (V1-V4) is associated with left
ventricular dysfunction and carries higher mortality. Monitor for heart
failure, cardiogenic shock, and arrhythmias.
Question 2
The patient's ECG confirms acute STEMI. Which medication should be
administered immediately to reduce mortality?
A. Morphine sulfate 2-4 mg IV
B. Aspirin 324 mg chewed
C. Metoprolol 5 mg IV
D. Heparin 5,000 units IV
Answer: B. Aspirin 324 mg chewed
Rationale: Aspirin is the first-line antiplatelet agent in acute MI.
Chewed aspirin allows rapid absorption and irreversible inhibition of
cyclooxygenase, reducing mortality by approximately 20-30%. It should
be administered immediately upon diagnosis, even before the ECG is
completed if MI is suspected. Morphine (A) is for pain control but not
first-line for mortality reduction.
Nursing Tip: Assess for aspirin allergy before administration. If
allergic, clopidogrel (Plavix) 300-600 mg loading dose is an alternative.
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Question 3
The patient is taken to the cardiac catheterization lab for percutaneous
coronary intervention (PCI). Following the procedure, the patient
develops hypotension (BP 85/50), tachycardia (HR 115), and cool,
clammy skin. What is the priority nursing action?
A. Administer IV fluids as prescribed
B. Assess for bleeding at the femoral access site
C. Notify the provider immediately
D. Place the patient in Trendelenburg position
Answer: B. Assess for bleeding at the femoral access site
Rationale: After PCI, hypotension with tachycardia and cool skin
suggests hemorrhage or retroperitoneal bleeding at the access site.
The priority is to assess the access site for bleeding, hematoma, or
pulsatile mass. If bleeding is present, apply firm pressure 1-2 inches
above the access site. If no external bleeding, suspect retroperitoneal
bleed (requires immediate surgical consultation). Trendelenburg position
(D) may worsen bleeding.
Nursing Tip: Post-PCI assessment includes:
• Access site q15min for first hour
• Distal pulses (dorsalis pedis, posterior tibial)
• Vital signs
• Retroperitoneal bleeding signs: flank pain, back pain, unexplained
hypotension
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Question 4
Which laboratory finding is most specific for myocardial necrosis in this
patient?
A. Creatinine kinase (CK)
B. Troponin I
C. Myoglobin
D. C-reactive protein (CRP)
Answer: B. Troponin I
Rationale: Cardiac troponin I and T are the most specific and
sensitive biomarkers for myocardial necrosis. Troponin rises within 3-4
hours, peaks at 12-24 hours, and remains elevated for 7-14 days. CK-
MB (A) is less specific. Myoglobin (C) rises early but is not cardiac-
specific. CRP (D) is an inflammatory marker, not specific for necrosis.
Nursing Tip: Troponin levels are diagnostic for MI when >99th
percentile of the upper reference limit with a rising or falling pattern.
Question 5
The patient is prescribed metoprolol following MI. What is the primary
rationale for beta-blocker therapy post-MI?
A. Reduce preload and afterload
B. Decrease myocardial oxygen demand
C. Prevent ventricular remodeling
D. Reduce cholesterol levels
Answer: B. Decrease myocardial oxygen demand
MED-SURG NURSING: 2026 COMPREHENSIVE
CASE-BASED EXAM REVIEW & TEST BANK
High-Yield Q&A with Clinical Rationales
Updated for NCLEX-RN®, CMSRN®, and Med-Surg
Certification Examinations
1. CARDIOVASCULAR SYSTEM
Case Study 1: Acute Myocardial Infarction
Scenario: A 62-year-old male presents to the emergency department
with crushing substernal chest pain radiating to the left arm, diaphoresis,
and shortness of breath. Symptoms began 45 minutes ago. ECG shows
ST-segment elevation in leads V1-V4. Vital signs: BP 150/90, HR 110,
RR 22, O2 sat 94% on room air.
Question 1
What is the priority nursing action for this patient?
A. Obtain a 12-lead ECG
B. Administer sublingual nitroglycerin
C. Apply oxygen via nasal cannula
D. Establish IV access
Answer: A. Obtain a 12-lead ECG
,2|Page
Rationale: For a patient with suspected acute myocardial infarction
(AMI), the priority is to obtain a 12-lead ECG within 10 minutes of
arrival to confirm STEMI and guide reperfusion therapy. While oxygen,
nitroglycerin, and IV access are important, ECG confirmation is time-
sensitive because "door-to-balloon" time should be ≤90 minutes. The
ECG shows ST elevation in V1-V4, indicating anterior wall MI.
Nursing Tip: Anterior wall MI (V1-V4) is associated with left
ventricular dysfunction and carries higher mortality. Monitor for heart
failure, cardiogenic shock, and arrhythmias.
Question 2
The patient's ECG confirms acute STEMI. Which medication should be
administered immediately to reduce mortality?
A. Morphine sulfate 2-4 mg IV
B. Aspirin 324 mg chewed
C. Metoprolol 5 mg IV
D. Heparin 5,000 units IV
Answer: B. Aspirin 324 mg chewed
Rationale: Aspirin is the first-line antiplatelet agent in acute MI.
Chewed aspirin allows rapid absorption and irreversible inhibition of
cyclooxygenase, reducing mortality by approximately 20-30%. It should
be administered immediately upon diagnosis, even before the ECG is
completed if MI is suspected. Morphine (A) is for pain control but not
first-line for mortality reduction.
Nursing Tip: Assess for aspirin allergy before administration. If
allergic, clopidogrel (Plavix) 300-600 mg loading dose is an alternative.
,3|Page
Question 3
The patient is taken to the cardiac catheterization lab for percutaneous
coronary intervention (PCI). Following the procedure, the patient
develops hypotension (BP 85/50), tachycardia (HR 115), and cool,
clammy skin. What is the priority nursing action?
A. Administer IV fluids as prescribed
B. Assess for bleeding at the femoral access site
C. Notify the provider immediately
D. Place the patient in Trendelenburg position
Answer: B. Assess for bleeding at the femoral access site
Rationale: After PCI, hypotension with tachycardia and cool skin
suggests hemorrhage or retroperitoneal bleeding at the access site.
The priority is to assess the access site for bleeding, hematoma, or
pulsatile mass. If bleeding is present, apply firm pressure 1-2 inches
above the access site. If no external bleeding, suspect retroperitoneal
bleed (requires immediate surgical consultation). Trendelenburg position
(D) may worsen bleeding.
Nursing Tip: Post-PCI assessment includes:
• Access site q15min for first hour
• Distal pulses (dorsalis pedis, posterior tibial)
• Vital signs
• Retroperitoneal bleeding signs: flank pain, back pain, unexplained
hypotension
, 4|Page
Question 4
Which laboratory finding is most specific for myocardial necrosis in this
patient?
A. Creatinine kinase (CK)
B. Troponin I
C. Myoglobin
D. C-reactive protein (CRP)
Answer: B. Troponin I
Rationale: Cardiac troponin I and T are the most specific and
sensitive biomarkers for myocardial necrosis. Troponin rises within 3-4
hours, peaks at 12-24 hours, and remains elevated for 7-14 days. CK-
MB (A) is less specific. Myoglobin (C) rises early but is not cardiac-
specific. CRP (D) is an inflammatory marker, not specific for necrosis.
Nursing Tip: Troponin levels are diagnostic for MI when >99th
percentile of the upper reference limit with a rising or falling pattern.
Question 5
The patient is prescribed metoprolol following MI. What is the primary
rationale for beta-blocker therapy post-MI?
A. Reduce preload and afterload
B. Decrease myocardial oxygen demand
C. Prevent ventricular remodeling
D. Reduce cholesterol levels
Answer: B. Decrease myocardial oxygen demand
