ATRIAL FIBRILLATION DETECTION USING VENTRICULAR RATE VARIABILITY

摘要

Atrial fibrillation information can be determined from ventricular information or a ventricular location, such as using ventricular rate variability. An ambulatory medical device can receive indications of pairs of first and second ventricular rate changes of three temporally adjacent ventricular heart beats. A first count of instances of the pairs meeting a combined rate change magnitude characteristic and a second count of instances of the pairs in which both of the first and second ventricular rate changes are negative can be used to provide atrial fibrillation information.

主权项

1. An apparatus to detect atrial fibrillation, the apparatus comprising:
a processor circuit, comprising:
an input to receive indications of pairs of first and second ventricular rate changes of three temporally adjacent ventricular heart beats;a first counter circuit, to determine a first count of instances of the pairs in which a combined rate change magnitude characteristic is less than at least one first criterion;a second counter circuit, to determine a second count of instances of the pairs in which both of the first and second ventricular rate changes are negative; andan output to provide atrial fibrillation information using the first and second counts.