Relias Dysrhythmia Complete Exam Practice Guide (Questions with Expert Graded A+ Answers)

Relias Dysrhythmia Complete Exam Practice Guide (Questions with Expert Graded A+ Answers) 1. Normal sinus rhythm - ANSWER heart rhythm originating in the sinoatrial node with a rate in patients at rest of 60 to 100 beats per minute 2. Sinus Arrhythmia - ANSWER Appearance is ALMOST NORMAL: Respiratory - Circulatory interaction Rate INCREASES with INSPIRATION (IN=IN) 3. 2nd Degree Heart Block (Mobitz II) - ANSWER Rare, but more serious Sudden appearance of a nonconductor P-wave P-waves are nl, but some aren't followed by a QRS complex PR & RR intervals are constant 4. 3rd degree heart block - ANSWER no obvious correlation between p and qrs, need pace maker 5. premature ventricular contraction (PVC) - ANSWER a ventricular contraction preceding the normal impulse initiated by the SA node (pacemaker) 6. Bigeminy PVC - ANSWER every other beat is a PVC 7. PVC couplets - ANSWER PVC occurring in pairs, no adequate C.O. when this occurs 8. monomorphic ventricular tachycardia - ANSWER presents with wide QRS complexes of a common shape. 9. Torsades de pointes - ANSWER Rate: 120 - 200 usually P wave: Obscured by ventricular waves QRS: Wide QRS - "Twisting of the Points" Conduction: Ventricular only Rhythm: Slightly irregular 10. Ventricular fibrillation (V-fib) - ANSWER abnormal heart rhythm which results in quivering of ventricles 11. Idioventricular Rhythm - ANSWER 40 *looks like vtach but slow* - no P waves (from vent foci) - Wide QRS (serious, death like rhythm) - called "dying heart" rhythm...occasional ventral beat b4 death (asystole) 12. Accelerated Idioventricular Rhythm - ANSWER Rate: 50 - 100 usually (usually slow) P wave: Obscured by ventricular waves (occur during ventricular contraction) - SA node slower than faster ventricular pacing than should be QRS: Wide QRS Conduction: Ventricular only Rhythm: Regular - benign rhythm that is sometimes seen during acute MI or early after reperfusion. - Rarely sustained, does not progress to vfib, rarely requires treatment 13. asystole - ANSWER absence of contractions of the heart 14. Sinus Bradycardia - ANSWER 60 normal sinus rhythm 15. Sinus Tachycardia - ANSWER 100 (100-150) normal sinus rhythm 16. Premature Atrial Contraction (PAC) - ANSWER Heart Rate: Depends on underlying rhythm Regularity: Interrupts the regularity of underlying rhythm P-Wave: can be flattened, notched, or unusual. May be hidden within the T wave PRI: measures between .12-.20 seconds and can be prolonged; can be different from other complexes QRS: .12 seconds 17. Sinus Arrest/Pause - ANSWER - SA node doesn't fire - notice absence of P-wave for a complete cycle (a missed cycle) length of pause ≠ multiple of normal rate (block) 18. Atrial Fibrillation (A-Fib) - ANSWER an irregular and often very fast heart rate originating from abnormal conduction in the atria 19. Atrial Flutter - ANSWER irregular beating of the atria; often described as "a-flutter with 2 to 1 block or 3 to 1 block"