Clinical Guidelines & Documents
- Section I: Introduction and Methodology ...............e95
- The implantable cardioverter defibrillator (ICD) has emerged as an important treatment option for selected patients who are at risk of sudden cardiac death. Randomized trials have consistently shown that ICD implantation reduces mortality in patients with heart failure and reduced left ventricular function, as well as in patients who have suffered a cardiac arrest.1–3 Recommendations on the use of the ICD in clinical practice have been provided in four important guideline documents sponsored by the American College of Cardiology (ACC), the American Heart Association (AHA), Heart Rhythm Society (HRS), and the European Society of Cardiology (ESC).
- The most recent American College of Cardiology Foundation/American Heart Association/Heart Rhythm Society (ACCF/AHA/HRS) guidelines related to pacemaker implantation were published as part of a larger document related to device-based therapy.1 While this document provides some comments on pacemaker mode selection and algorithms to guide selection, it does not provide specific recommendations regarding choices for single- or dual-chamber devices. Over the past 15 years multiple randomized trials have compared a number of cardiovascular outcomes among patients randomized to atrial or dual-chamber pacing vs those randomized to ventricular pacing.