NURSING 4717C - CM Final Exam Study Guide.

NURSING 4717C - CM Final Exam Study Guide/NURSING 4717C - CM Final Exam Study Guide. Defibrillation, Cardioversion & Pacing PPTX Wk 7-8, Ch 34 Defibrillation: Asynchronous countershock that depolarizes critical mass of myocardium simultaneously to stop re-entry circuit and allow sinus node to regain control of heart o V Fib and VTach Cardioversion: synchronized counter shock only done when PT has a pulse SVT, AFib, A Flutter Transcutaneous Pacing: p. 674; used as an emergency measure to provide ventricular pacing in profoundly Bradycardic or asystolic patient until invasive pacing can be used or patient heartrate returns to normal EKG Rhythm strip Identification: See EKG Practice packet Identify Heart Blocks First Degree Second degree Type 1 Second degree Type 2 Third degree