| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an implantable defibrillator which provides a device-implemented method of delivering cardiac pacing, cardioversion, and defibrillation therapies in selective response to dysrhythmia detection of an implant patient's cardiac signal. Ž<P>SOLUTION: The patient's heart rate is sensed, and cardioversion/defibrillation therapies are delivered by the device by producing electrical shocks of adjustable energy level for application to the patient's heart in response to applicable detected levels of pathologic accelerated heart rate. A match between the generated cardiac pacing rate and the hemodynamic needs of the patient under conditions of rest and physical activity is optimized by sensing periods of patient physical activity and rest and generating a signal representative thereof to control the cardiac pacing rate accordingly and according to the extent of activity by means of an accelerometer (30) mounted on hybrid electronic circuitry. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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