Patients who receive greatest benefit from heart failure treatment identified

Mild heart failure patients with a particular condition that results in disorganized electrical activity throughout the heart benefit substantially from cardiac resynchronization therapy with defibrillator (CRT--D), according to a new study. In patients with the condition, known as left bundle branch block (LBBB), CRT-D therapy reduced heart failure progression and the risk of ventricular tachyarrhythmias, fast and potentially life-threatening heart rhythms. Heart failure patients without LBBB did not benefit from the therapy.

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