A study of 330 patients implanted with Boston Scientific's subcutaneous implantable cardiac defibrillator found that the device successfully restored normal heart rhythms in 38 patients who suffered heart irregularity during an 11-month evaluation period. The device also reversed heart rhythm irregularity 100% of the time, surpassing the FDA target of an 88% response rate, when researchers tested it by causing an abnormal heart rhythm, according to the study in the journal Circulation.

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