University:
West Coast University
Course:
NURS 110 | Introduction to Professional Nursing
Academic year:

2021
Views:

403

Pages:

2
Author:

Nico Bryan

Basic Characteristics of Cardiac Rhythms Dysrhythmia Rate 60-100 Sinus Rhythms Normal Sinus Rhythm P-R Interval QRS Interval Regular 0.12-0.20 sec <0.12 sec Comments Sinus Bradycardia <60 Regular 0.12-0.20 <0.12 sec Sinus Tachycardia 100-160 Regular 0.12-0.20 sec <0.12 sec Sinus Arrhythmia 60-100 Irregular 0.12-0.20 sec <0.12 sec Depends on Sinus Pause/Arrest pauses Usually regular with pauses 0.12-0.20 sec <0.12 sec Atrial Rhythms PAC Depends on underlying rhythm Interrupts underlying rhythm 0.12-0.20 sec <0.12 sec Regularity depends on underlying rhythm and number of PAC’s Atrial Tachycardia SVT 150-250 Regular 0.12-0.20 sec <0.12 sec P waves may be hidden in previous T due to rapid rate Variable <0.12 sec “Sawtooth” pattern F waves Atrial Flutter V rate varies Irregular A rate 250350 Rhythm varies with respiration Atrial Fibrillation Controlled >100 AF <100 Uncontrolled AF Irregular Nonmeasureable <0.12 sec Wandering Pacemaker 60-100 Irregular <0.20 sec <0.12 sec Morphology of P wave changes Usually regular >0.20 sec <0.12 sec P:QRS ratio 1:1 Heart Blocks 60-100 1st AV block 2nd Degree Mobitz 1, Wenkebach V0.12 sec wide Ventricular Rhythms PVC on and bizarre underlying rhythm underlying rhythm Ventricular Tachycardia 150-250 Ventricular Fibrillation No cardiac Irregular output Idioventricular <20-40 Ventricular Asystole None Regular No PR interval >0.12 sec wide and bizarre No PR interval No QRS Chaotic Regular No PR interval >0.12 sec bizarre Slows as heart dies None None No electrical activity None