What is a wearable cardioverter defibrillator (WCD)? Cardiology Basics

What is a wearable cardioverter defibrillator (WCD)? Cardiology Basics Wearable cardioverter defibrillator (WCD) is a device which is worn on a vest, monitors the heart rhythm continuously and delivers a defibrillator shock in case of life threatening ventricular arrhythmias. Implantable cardioverter defibrillator (ICD) is a similar device which is implanted subcutaneously for long term use. WCD is meant for temporary use for those who have a high risk of life threatening ventricular arrhythmias but are ineligible for an ICD implantation as per the guidelines. WCD has patch electrodes for giving the shocks and a monitoring system built-in into a vest while the defibrillator with battery is worn on the belt. WCD can also give audible alerts and does not need the help of a bystander as it works automatically. This in contrast to the automated external defibrillator or AED, which only gives audio prompts and bystander intervention is needed to deliver a shock. A typical WCD device has a maximum shock output of 150 Joules and could terminate ventricular fibrillation in first attempt with 70 to 100 Joules shock. Still programming at maximum energy output has been suggested for ambulatory patients to ensure good safety margin. WCD has been called as a “Life vest till the life boat arrives”, meaning that it can be considered during the period when the patient is not eligible for an ICD as per guidelines published by medical societies. These include patients with left ventricular...
Source: Cardiophile MD - Category: Cardiology Authors: Tags: General Cardiology Source Type: blogs