ULTIMATE ADULT CCRN/PCCN CERTIFICATION MASTERY EXAM
2026/2027: 300 VERIFIED QUESTIONS WITH ANSWERS & RATIONALES
– GUARANTEED A+ LATEST UPDATE
1. A patient presents with acute chest pain, ST-segment elevation in leads V1–
V4, and elevated troponin I. Which intervention is most time-sensitive?
A) Administer morphine for pain relief
B) Start a nitroglycerin drip
C) Perform primary percutaneous coronary intervention (PCI) within 90 minutes
D) Obtain a chest x-ray
Explanation: For STEMI, primary PCI within 90 minutes of arrival is the gold
standard to restore coronary flow and reduce mortality. Fibrinolytics are an
alternative if PCI is unavailable within 120 minutes.
2. A patient with heart failure has an ejection fraction of 25% and is on maximal
medical therapy. Which device is indicated to reduce sudden cardiac death?
A) Permanent pacemaker
B) Implantable cardioverter-defibrillator (ICD)
C) Left ventricular assist device (LVAD)
D) Cardiac resynchronization therapy (CRT-P)
*Explanation: ICD is recommended for primary prevention in patients with non-
ischemic or ischemic cardiomyopathy with LVEF ≤35% on optimal medical therapy
for ≥3 months.*
3. In a patient with third-degree AV block and a wide QRS escape rhythm, the
most appropriate initial treatment is:
A) Atropine 0.5 mg IV
B) Transcutaneous pacing
C) Dopamine infusion
D) Observe and monitor
Explanation: Third-degree AV block with wide QRS (indicating infranodal block) is
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,unstable; transcutaneous pacing provides immediate support until transvenous
pacing can be placed. Atropine is ineffective for infranodal blocks.
4. A post-cardiac arrest patient has return of spontaneous circulation (ROSC) but
remains comatose. Target temperature management (TTM) should be initiated
at which temperature range?
A) 35.5–36.5°C
B) 34.0–35.0°C
C) 32.0–36.0°C
D) 30.0–31.0°C
Explanation: Current guidelines recommend maintaining a target temperature
between 32°C and 36°C for at least 24 hours after ROSC in comatose patients.
Avoid hyperthermia.
5. Which vasoactive agent is preferred for cardiogenic shock with low SVR?
A) Phenylephrine
B) Norepinephrine
C) Dobutamine
D) Epinephrine
Explanation: Norepinephrine is first-line for cardiogenic shock to increase MAP
without excessive tachycardia. Dobutamine is added for low cardiac output but
may worsen hypotension if SVR is very low.
6. A patient with aortic stenosis presents with syncope during exertion. The
hemodynamic cause is:
A) Fixed obstruction leading to inability to increase cardiac output
B) Reflex bradycardia
C) Transient complete heart block
D) Vasovagal response
Explanation: In aortic stenosis, the fixed stenotic valve prevents adequate increase
in stroke volume during exercise, leading to a drop in systemic blood pressure and
syncope.
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,7. Which ECG finding is most specific for pericarditis?
A) ST-segment depression in V1–V3
B) Diffuse concave ST elevation with PR depression
C) Pathologic Q waves in inferior leads
D) Tall peaked T waves
Explanation: Acute pericarditis typically shows diffuse ST elevation (concave
upward) and PR segment depression, reflecting subepicardial inflammation.
8. A patient with an intra-aortic balloon pump (IABP) has a mean arterial
pressure (MAP) of 55 mm Hg and urine output of 15 mL/hr. The next step is:
A) Increase IABP augmentation
B) Evaluate for correct timing and ensure 1:1 augmentation
C) Decrease IABP frequency to 1:2
D) Administer furosemide
Explanation: Ineffective IABP support may be due to improper timing (early/late
inflation/deflation). Correct timing optimizes diastolic augmentation and afterload
reduction. Always troubleshoot before adding vasopressors.
9. Which laboratory value is most indicative of acute myocardial infarction (MI)
in the first 3 hours?
A) CK-MB
B) High-sensitivity troponin I
C) Myoglobin
D) LDH
*Explanation: High-sensitivity troponin is the preferred biomarker; it rises within
2–4 hours and has high specificity for myocardial necrosis. Myoglobin rises earlier
but is nonspecific.*
10. A patient with acute decompensated heart failure has a BP of 160/90 mm
Hg, HR 110, and pulmonary edema. First-line therapy is:
A) Metoprolol 5 mg IV
B) Nitroglycerin IV infusion
C) Dobutamine infusion
D) Nesiritide
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, Explanation: IV nitroglycerin reduces preload and afterload, quickly relieving
pulmonary edema in hypertensive heart failure. Beta-blockers are not acute
therapy.
11. In a patient with sustained monomorphic ventricular tachycardia with a
pulse and BP 100/60 mm Hg, the appropriate treatment is:
A) Immediate defibrillation
B) Synchronized cardioversion
C) IV amiodarone over 1 hour
D) Vagal maneuvers
Explanation: Stable monomorphic VT with a pulse is treated with synchronized
cardioversion (starting at 100 J). Defibrillation is for pulseless VT. Amiodarone can
be used but cardioversion is faster.
12. Which finding suggests cardiac tamponade in a mechanically ventilated
patient?
A) Narrowed pulse pressure
B) Pulsus paradoxus >15 mm Hg despite ventilator
C) Distant heart sounds
D) Kussmaul sign
Explanation: Pulsus paradoxus (exaggerated drop in systolic BP during inspiration)
>10 mm Hg is classic. In ventilated patients, swings are larger; >15 mm Hg is
highly suggestive. All options can occur but pulsus paradoxus is key.
13. The most common rhythm immediately after defibrillation for ventricular
fibrillation is:
A) Ventricular tachycardia
B) Asystole
C) Sinus tachycardia
D) Atrial fibrillation
Explanation: Post-defibrillation, the heart often shows asystole or a very slow
rhythm before returning to organized activity. Immediate rhythm check should
focus on ROSC.
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2026/2027: 300 VERIFIED QUESTIONS WITH ANSWERS & RATIONALES
– GUARANTEED A+ LATEST UPDATE
1. A patient presents with acute chest pain, ST-segment elevation in leads V1–
V4, and elevated troponin I. Which intervention is most time-sensitive?
A) Administer morphine for pain relief
B) Start a nitroglycerin drip
C) Perform primary percutaneous coronary intervention (PCI) within 90 minutes
D) Obtain a chest x-ray
Explanation: For STEMI, primary PCI within 90 minutes of arrival is the gold
standard to restore coronary flow and reduce mortality. Fibrinolytics are an
alternative if PCI is unavailable within 120 minutes.
2. A patient with heart failure has an ejection fraction of 25% and is on maximal
medical therapy. Which device is indicated to reduce sudden cardiac death?
A) Permanent pacemaker
B) Implantable cardioverter-defibrillator (ICD)
C) Left ventricular assist device (LVAD)
D) Cardiac resynchronization therapy (CRT-P)
*Explanation: ICD is recommended for primary prevention in patients with non-
ischemic or ischemic cardiomyopathy with LVEF ≤35% on optimal medical therapy
for ≥3 months.*
3. In a patient with third-degree AV block and a wide QRS escape rhythm, the
most appropriate initial treatment is:
A) Atropine 0.5 mg IV
B) Transcutaneous pacing
C) Dopamine infusion
D) Observe and monitor
Explanation: Third-degree AV block with wide QRS (indicating infranodal block) is
1|Page
,unstable; transcutaneous pacing provides immediate support until transvenous
pacing can be placed. Atropine is ineffective for infranodal blocks.
4. A post-cardiac arrest patient has return of spontaneous circulation (ROSC) but
remains comatose. Target temperature management (TTM) should be initiated
at which temperature range?
A) 35.5–36.5°C
B) 34.0–35.0°C
C) 32.0–36.0°C
D) 30.0–31.0°C
Explanation: Current guidelines recommend maintaining a target temperature
between 32°C and 36°C for at least 24 hours after ROSC in comatose patients.
Avoid hyperthermia.
5. Which vasoactive agent is preferred for cardiogenic shock with low SVR?
A) Phenylephrine
B) Norepinephrine
C) Dobutamine
D) Epinephrine
Explanation: Norepinephrine is first-line for cardiogenic shock to increase MAP
without excessive tachycardia. Dobutamine is added for low cardiac output but
may worsen hypotension if SVR is very low.
6. A patient with aortic stenosis presents with syncope during exertion. The
hemodynamic cause is:
A) Fixed obstruction leading to inability to increase cardiac output
B) Reflex bradycardia
C) Transient complete heart block
D) Vasovagal response
Explanation: In aortic stenosis, the fixed stenotic valve prevents adequate increase
in stroke volume during exercise, leading to a drop in systemic blood pressure and
syncope.
2|Page
,7. Which ECG finding is most specific for pericarditis?
A) ST-segment depression in V1–V3
B) Diffuse concave ST elevation with PR depression
C) Pathologic Q waves in inferior leads
D) Tall peaked T waves
Explanation: Acute pericarditis typically shows diffuse ST elevation (concave
upward) and PR segment depression, reflecting subepicardial inflammation.
8. A patient with an intra-aortic balloon pump (IABP) has a mean arterial
pressure (MAP) of 55 mm Hg and urine output of 15 mL/hr. The next step is:
A) Increase IABP augmentation
B) Evaluate for correct timing and ensure 1:1 augmentation
C) Decrease IABP frequency to 1:2
D) Administer furosemide
Explanation: Ineffective IABP support may be due to improper timing (early/late
inflation/deflation). Correct timing optimizes diastolic augmentation and afterload
reduction. Always troubleshoot before adding vasopressors.
9. Which laboratory value is most indicative of acute myocardial infarction (MI)
in the first 3 hours?
A) CK-MB
B) High-sensitivity troponin I
C) Myoglobin
D) LDH
*Explanation: High-sensitivity troponin is the preferred biomarker; it rises within
2–4 hours and has high specificity for myocardial necrosis. Myoglobin rises earlier
but is nonspecific.*
10. A patient with acute decompensated heart failure has a BP of 160/90 mm
Hg, HR 110, and pulmonary edema. First-line therapy is:
A) Metoprolol 5 mg IV
B) Nitroglycerin IV infusion
C) Dobutamine infusion
D) Nesiritide
3|Page
, Explanation: IV nitroglycerin reduces preload and afterload, quickly relieving
pulmonary edema in hypertensive heart failure. Beta-blockers are not acute
therapy.
11. In a patient with sustained monomorphic ventricular tachycardia with a
pulse and BP 100/60 mm Hg, the appropriate treatment is:
A) Immediate defibrillation
B) Synchronized cardioversion
C) IV amiodarone over 1 hour
D) Vagal maneuvers
Explanation: Stable monomorphic VT with a pulse is treated with synchronized
cardioversion (starting at 100 J). Defibrillation is for pulseless VT. Amiodarone can
be used but cardioversion is faster.
12. Which finding suggests cardiac tamponade in a mechanically ventilated
patient?
A) Narrowed pulse pressure
B) Pulsus paradoxus >15 mm Hg despite ventilator
C) Distant heart sounds
D) Kussmaul sign
Explanation: Pulsus paradoxus (exaggerated drop in systolic BP during inspiration)
>10 mm Hg is classic. In ventilated patients, swings are larger; >15 mm Hg is
highly suggestive. All options can occur but pulsus paradoxus is key.
13. The most common rhythm immediately after defibrillation for ventricular
fibrillation is:
A) Ventricular tachycardia
B) Asystole
C) Sinus tachycardia
D) Atrial fibrillation
Explanation: Post-defibrillation, the heart often shows asystole or a very slow
rhythm before returning to organized activity. Immediate rhythm check should
focus on ROSC.
4|Page
