How useful are implantable cardioverter-defibrillators?

Preview

The implantable cardioverter-defibrillator (ICD) has proved effective in preventing sudden arrhythmic death in high-risk patients, yet critics question whether it reduces overall mortality. Given this controversy, should use of the ICD be expanded to include patients in lower-risk groups? In this article, Dr Fogoros summarizes the current consensus regarding ICD therapy. This discussion should be of special interest to physicians who may refer patients for possible ICD implantation and who are concerned about the device's ultimate usefulness.