| pubmed-article:19061695 | pubmed:abstractText | Heart failure (HF) is a common medical problem with significant morbidity and mortality. Recently, device-based therapy, cardiac resynchronization therapy (CRT), implantable cardioverter-defibrillators (ICDs), and combined CRT and ICD have become established therapies in patients with HF receiving standard medical therapy. Contemporary implantable devices are able to continuously monitor, store, and display long-term diagnostic information. Daily diagnostic information includes intrathoracic impedance, patient activity, hours spent in atrial tachycardia/fibrillation, ventricular rate during atrial tachycardia/fibrillation, ventricular tachyarrhythmia episodes, ICD shocks, day and night heart rate, and heart rate variability. | lld:pubmed |
