NCLEX CRUSADE ACADEMY TEST - 14 EKG PRT 1

1. The SA node is known as: The gatekeeper of the heart. The natural pacemaker of the heart. The electrical reset center. The ventricular pacemaker.

2. The AV node functions primarily to: Generate ventricular contraction. Delay electrical impulses before ventricular conduction. Control atrial contraction. Pump blood into the lungs.

3. The QRS complex represents: Atrial depolarization. Ventricular depolarization. Ventricular repolarization. Atrial repolarization.

4. The P wave represents: Atrial depolarization. Ventricular contraction. Ventricular repolarization. Electrical silence.

5. The T wave represents: Ventricular depolarization. Atrial repolarization. Ventricular repolarization. SA node firing.

6. One small square on EKG paper equals: 0.02 seconds. 0.04 seconds. 0.10 seconds. 0.20 seconds.

7. One large square on EKG paper equals: 0.10 seconds. 0.20 seconds. 0.30 seconds. 0.40 seconds.

8. The 6 second strip method calculates heart rate by: Multiplying QRS complexes by 5. Multiplying QRS complexes by 10. Multiplying QRS complexes by 20. Multiplying QRS complexes by 30.

9. The precise heart rate method uses: 1000 divided by large squares. 1500 divided by small squares. 500 divided by small squares. 300 divided by small squares.

10. The normal heart rate for Normal Sinus Rhythm is: 4060 bpm. 5090 bpm. 60100 bpm. 80120 bpm.

11. The normal PR interval duration is: 0.080.10 sec. 0.120.20 sec. 0.200.30 sec. 0.300.40 sec.

12. Sinus bradycardia is defined as: HR less than 50 bpm. HR less than 60 bpm. HR less than 70 bpm. HR less than 80 bpm.

13. The priority nursing intervention for symptomatic bradycardia is: Adenosine. Atropine. Lidocaine. Amiodarone.

14. Sinus tachycardia occurs when heart rate exceeds: 90 bpm. 100 bpm. 110 bpm. 120 bpm.

15. The primary treatment approach for sinus tachycardia is to: Defibrillate immediately. Treat the underlying cause. Insert pacemaker. Start dopamine.

16. Hyperkalemia is associated with which EKG finding?. Flattened T waves. Peaked T waves. Prolonged PR interval. Absent P waves.

17. Hypokalemia is associated with: U waves. Peaked T waves. Short QT interval. Wide QRS.

18. Hypocalcemia is associated with: Short QT interval. Prolonged QT interval. Peaked T waves. Absent P waves.

19. Stable supraventricular tachycardia is initially treated with: Defibrillation. Vagal maneuvers. Epinephrine. Lidocaine.

20. The first medication used for SVT is: Amiodarone. Lidocaine. Adenosine. Dopamine.

21. Adenosine administration may cause: Prolonged cardiac arrest. Brief asystole. Ventricular tachycardia. Bradycardia only.

22. Unstable tachyarrhythmias require: Vagal maneuvers. Synchronized cardioversion. Defibrillation immediately. Oxygen therapy only.

23. During synchronized cardioversion the shock is delivered: Randomly. At the T wave. At the R wave. At the P wave.

24. The NCLEX principle when evaluating cardiac rhythms is: Treat the monitor. Treat the patient. Always shock first. Ignore symptoms.

25. Pulseless Electrical Activity (PEA) means: No electrical rhythm. Electrical rhythm without pulse. Ventricular tachycardia. Bradycardia.