| 摘要 |
An implantable atrial defibrillator analyzes both the atrium and the ventricle to determine an abnormal atrial condition of the atrium and if the ventricle is unstable. Therapy is applied to correct the abnormal atrial condition, such as atrial fibrillation, only if the ventricle is stable, to insure that the therapy does not provoke a ventricular tachyarrhythmia. If the ventricle is unstable, first a process is performed to stabilize it, for example by using a ventricular pacing protocol. After the ventricle is stabilized, the atrial therapy is applied in synchronism with the ventricular events (i.e., in synchronism with either ventricular intrinsic events or ventricular pacing pulses.
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