Approximately 40% of cardiac resynchronization therapy (CRT) devices are implanted in patients with QRS intervals below 150 msecs, but a meta-analysis published in Archives in Internal Medicine finds that these patients may not benefit from the device. Ilke Sipahi and colleagues performed a meta-analysis that included five CRT clinical trials (COMPANION, CARE-HF, REVERSE, MADIT-CRT, RAFT)…

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The FDA has expanded the indication for CRT-D devices made by Boston Scientific. Previously, the devices had been approved only in NYHA Class III and IV patients. The expanded indication now includes Class I and II patients who have left bundle branch block. The expanded indication is based on data from the MADIT-CRT trial. “This…

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