NWCA CET TEST (NEW UPDATED VERSION) LATEST ACTUAL EXAM QUESTIONS
AND CORRECT ANSWERS (VERIFIED QUESTIONS AND ANSWERS) | GUARANTEED
PASS A+ [2025]
1. Which chamber of the heart pumps oxygenated blood into the systemic circulation?
o A. Right atrium
o B. Right ventricle
o C. Left atrium
o D. Left ventricle
Answer: D — The left ventricle pumps oxygenated blood through the aorta to the
body.
2. What is the primary function of the atrioventricular (AV) node in cardiac conduction?
o A. Initiate electrical impulse for each heartbeat
o B. Delay conduction to allow for atrial contraction before ventricular contraction
o C. Trigger ventricular contraction directly
o D. Send impulses to SA node for pacing
Answer: B — AV node slows conduction to allow ventricles to fill after atrial
contraction.
3. What is the normal paper speed for a standard EKG tracing?
o A. 10 mm/sec
o B. 25 mm/sec
o C. 50 mm/sec
o D. 100 mm/sec
Answer: B — Standard EKG recorders operate at 25 mm/sec.
4. On a 12-lead EKG, which lead typically shows the “classic” upright P wave in normal
sinus rhythm?
o A. Lead I
o B. Lead II
o C. Lead aVR
o D. Lead V1
Answer: B — Lead II often shows the best view of the atrial depolarization (P
wave).
5. You count 6 QRS complexes in a 6-second EKG strip. What is the approximate heart
rate?
o A. 60 bpm
o B. 90 bpm
o C. 100 bpm
o D. 120 bpm
Answer: C — 6 complexes/6 sec × 10 = 60/min? Actually that equals 60. Wait:
formula: number of QRS in 6 sec × 10 = rate → 6 × 10 = 60 bpm. So correct: A.
6. A patient’s EKG shows regular rhythm, heart rate 55 bpm, P waves before each QRS,
and normal PR/QRS intervals. What is this likely rhythm?
o A. Sinus bradycardia
o B. Atrial fibrillation
2026 Graded A+ EXAM
, o C. Ventricular tachycardia
o D. First-degree AV block
Answer: A — Regular rhythm, P before each QRS, rate < 60 → sinus
bradycardia.
7. What does a prolonged PR interval (> 0.20 seconds) on EKG suggest?
o A. First-degree AV block
o B. Bundle branch block
o C. Ventricular hypertrophy
o D. Atrial fibrillation
Answer: A — Prolonged PR indicates delayed AV conduction (1º AV block).
8. What part of the heart’s conduction system is considered the “pacemaker” under normal
conditions?
o A. AV node
o B. Bundle of His
o C. Sinoatrial (SA) node
o D. Purkinje fibers
Answer: C — SA node initiates the impulse.
9. Which of these is the correct sequence of cardiac electrical conduction in a normal heart?
o A. SA node → AV node → Bundle of His → Purkinje fibers → atria →
ventricles
o B. SA node → atria → AV node → Bundle of His → Purkinje fibers → ventricles
o C. AV node → SA node → atria → ventricles → Purkinje fibers
o D. Atria → SA node → AV node → ventricles → Purkinje fibers
Answer: B — SA node → atrial depolarization → AV node → Bundle of His →
Purkinje → ventricular depolarization.
10. Which wave on an EKG represents ventricular depolarization?
o A. P wave
o B. QRS complex
o C. T wave
o D. U wave
Answer: B — The QRS complex corresponds to ventricular depolarization.
11. A 12-lead EKG shows ST-segment elevation in leads II, III, and aVF. This suggests:
o A. Anterior wall myocardial infarction
o B. Lateral wall myocardial infarction
o C. Inferior wall myocardial infarction
o D. Septal infarction
Answer: C — ST-elevations in II, III, aVF correspond to inferior MI.
12. What is the first step in a systematic EKG rhythm interpretation method?
o A. Assess P waves
o B. Determine heart rate
o C. Determine regularity (rhythm)
o D. Measure QRS duration
Answer: C — First determine if rhythm is regular or irregular. ekg.academy+1
13. A patient’s EKG strip shows no visible P waves, irregularly irregular R-R intervals, and
narrow QRS complexes. What is the most likely rhythm?
o A. Sinus tachycardia
2026 Graded A+ EXAM
, o B. Atrial fibrillation
o C. Ventricular tachycardia
o D. Junctional rhythm
Answer: B — Irregularly irregular rhythm with absent P waves → atrial
fibrillation.
14. What is the main role of the EKG technician during a stress test?
o A. Interpret EKG and diagnose MI
o B. Prepare patient, apply leads, monitor rhythm, document, and alert provider if
abnormalities occur nwca.edu2.com+1
o C. Administer medications
o D. Perform defibrillation if needed
Answer: B — Technician handles test setup and rhythm monitoring;
interpretation by provider.
15. Which of the following is considered an artifact commonly seen on EKG strip?
o A. Muscle tremor interference
o B. ST-elevation consistent across leads
o C. QRS prolongation in bundle-branch block
o D. Pathologic Q waves in old MI
Answer: A — Muscle tremor can create artifact noise on EKG tracing.
16. Which lead placement variation is used in a 5-lead telemetry setup (limb leads only)?
o A. 4 limb leads + V1
o B. RA, LA, RL, LL + chest lead (often V1 or V5)
o C. V1–V6 only
o D. RA, LA only
Answer: B — 5-lead telemetry uses four limb leads + one chest lead.
17. If the EKG paper speed is set to 50 mm/sec instead of 25 mm/sec, what effect will this
have on the tracing?
o A. Waves will appear twice as wide horizontally (longer duration per interval)
o B. Waves will appear narrower
o C. Heart rate appears slower
o D. QRS amplitude doubles
Answer: A — Faster speed stretches waves horizontally, increasing interval
durations on paper.
18. On EKG, what interval represents the time from atrial depolarization to ventricular
depolarization?
o A. PR interval
o B. QT interval
o C. ST segment
o D. RR interval
Answer: A — PR interval measures conduction from atria → ventricles.
19. What does a widened QRS complex (>120 ms) usually indicate?
o A. Normal conduction
o B. Ventricular conduction delay or ventricular origin beat
o C. Atrial flutter
2026 Graded A+ EXAM
AND CORRECT ANSWERS (VERIFIED QUESTIONS AND ANSWERS) | GUARANTEED
PASS A+ [2025]
1. Which chamber of the heart pumps oxygenated blood into the systemic circulation?
o A. Right atrium
o B. Right ventricle
o C. Left atrium
o D. Left ventricle
Answer: D — The left ventricle pumps oxygenated blood through the aorta to the
body.
2. What is the primary function of the atrioventricular (AV) node in cardiac conduction?
o A. Initiate electrical impulse for each heartbeat
o B. Delay conduction to allow for atrial contraction before ventricular contraction
o C. Trigger ventricular contraction directly
o D. Send impulses to SA node for pacing
Answer: B — AV node slows conduction to allow ventricles to fill after atrial
contraction.
3. What is the normal paper speed for a standard EKG tracing?
o A. 10 mm/sec
o B. 25 mm/sec
o C. 50 mm/sec
o D. 100 mm/sec
Answer: B — Standard EKG recorders operate at 25 mm/sec.
4. On a 12-lead EKG, which lead typically shows the “classic” upright P wave in normal
sinus rhythm?
o A. Lead I
o B. Lead II
o C. Lead aVR
o D. Lead V1
Answer: B — Lead II often shows the best view of the atrial depolarization (P
wave).
5. You count 6 QRS complexes in a 6-second EKG strip. What is the approximate heart
rate?
o A. 60 bpm
o B. 90 bpm
o C. 100 bpm
o D. 120 bpm
Answer: C — 6 complexes/6 sec × 10 = 60/min? Actually that equals 60. Wait:
formula: number of QRS in 6 sec × 10 = rate → 6 × 10 = 60 bpm. So correct: A.
6. A patient’s EKG shows regular rhythm, heart rate 55 bpm, P waves before each QRS,
and normal PR/QRS intervals. What is this likely rhythm?
o A. Sinus bradycardia
o B. Atrial fibrillation
2026 Graded A+ EXAM
, o C. Ventricular tachycardia
o D. First-degree AV block
Answer: A — Regular rhythm, P before each QRS, rate < 60 → sinus
bradycardia.
7. What does a prolonged PR interval (> 0.20 seconds) on EKG suggest?
o A. First-degree AV block
o B. Bundle branch block
o C. Ventricular hypertrophy
o D. Atrial fibrillation
Answer: A — Prolonged PR indicates delayed AV conduction (1º AV block).
8. What part of the heart’s conduction system is considered the “pacemaker” under normal
conditions?
o A. AV node
o B. Bundle of His
o C. Sinoatrial (SA) node
o D. Purkinje fibers
Answer: C — SA node initiates the impulse.
9. Which of these is the correct sequence of cardiac electrical conduction in a normal heart?
o A. SA node → AV node → Bundle of His → Purkinje fibers → atria →
ventricles
o B. SA node → atria → AV node → Bundle of His → Purkinje fibers → ventricles
o C. AV node → SA node → atria → ventricles → Purkinje fibers
o D. Atria → SA node → AV node → ventricles → Purkinje fibers
Answer: B — SA node → atrial depolarization → AV node → Bundle of His →
Purkinje → ventricular depolarization.
10. Which wave on an EKG represents ventricular depolarization?
o A. P wave
o B. QRS complex
o C. T wave
o D. U wave
Answer: B — The QRS complex corresponds to ventricular depolarization.
11. A 12-lead EKG shows ST-segment elevation in leads II, III, and aVF. This suggests:
o A. Anterior wall myocardial infarction
o B. Lateral wall myocardial infarction
o C. Inferior wall myocardial infarction
o D. Septal infarction
Answer: C — ST-elevations in II, III, aVF correspond to inferior MI.
12. What is the first step in a systematic EKG rhythm interpretation method?
o A. Assess P waves
o B. Determine heart rate
o C. Determine regularity (rhythm)
o D. Measure QRS duration
Answer: C — First determine if rhythm is regular or irregular. ekg.academy+1
13. A patient’s EKG strip shows no visible P waves, irregularly irregular R-R intervals, and
narrow QRS complexes. What is the most likely rhythm?
o A. Sinus tachycardia
2026 Graded A+ EXAM
, o B. Atrial fibrillation
o C. Ventricular tachycardia
o D. Junctional rhythm
Answer: B — Irregularly irregular rhythm with absent P waves → atrial
fibrillation.
14. What is the main role of the EKG technician during a stress test?
o A. Interpret EKG and diagnose MI
o B. Prepare patient, apply leads, monitor rhythm, document, and alert provider if
abnormalities occur nwca.edu2.com+1
o C. Administer medications
o D. Perform defibrillation if needed
Answer: B — Technician handles test setup and rhythm monitoring;
interpretation by provider.
15. Which of the following is considered an artifact commonly seen on EKG strip?
o A. Muscle tremor interference
o B. ST-elevation consistent across leads
o C. QRS prolongation in bundle-branch block
o D. Pathologic Q waves in old MI
Answer: A — Muscle tremor can create artifact noise on EKG tracing.
16. Which lead placement variation is used in a 5-lead telemetry setup (limb leads only)?
o A. 4 limb leads + V1
o B. RA, LA, RL, LL + chest lead (often V1 or V5)
o C. V1–V6 only
o D. RA, LA only
Answer: B — 5-lead telemetry uses four limb leads + one chest lead.
17. If the EKG paper speed is set to 50 mm/sec instead of 25 mm/sec, what effect will this
have on the tracing?
o A. Waves will appear twice as wide horizontally (longer duration per interval)
o B. Waves will appear narrower
o C. Heart rate appears slower
o D. QRS amplitude doubles
Answer: A — Faster speed stretches waves horizontally, increasing interval
durations on paper.
18. On EKG, what interval represents the time from atrial depolarization to ventricular
depolarization?
o A. PR interval
o B. QT interval
o C. ST segment
o D. RR interval
Answer: A — PR interval measures conduction from atria → ventricles.
19. What does a widened QRS complex (>120 ms) usually indicate?
o A. Normal conduction
o B. Ventricular conduction delay or ventricular origin beat
o C. Atrial flutter
2026 Graded A+ EXAM
