How to Respond to an Implantable Cardioverter-Defibrillator Shock

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Abstract
The ICD provides continuous monitoring and treatment for cardiac arrhythmias (abnormal heartbeats). The ICD automatically detects an abnormal heartbeat and will deliver small rapid pacing impulses or an electric shock to the heart to restore a normal heart rhythm. During the first year after implantation, the chances of receiving at least one ICD shock can range from one third to one half of all ICD recipients.1,2 The shock sensation has been likened to a swift kick in the chest and rated a “6” on a 0 to 10 pain scale.1,3 Nonetheless, quality-of-life research indicates that the ICD is at least equal to or better than antiarrhythmic medications on most indicators of quality of life.2,4–8 Most research has pointed to ICD shock as the primary culprit if reductions in quality of life occur.2