James O. Gilkerson;Randall L. McPherson;David L. Perschbacher;Efdal Elferri;Donald L. Hopper;Gary T. Seim;Dan Li
发明人:
Efdal Elferri,Randall L. McPherson,Donald L. Hopper,Gary T. Seim,James O. Gilkerson,Dan Li,David L. Perschbacher
申请号：
US13353515
公开号：
US20120197323A1
申请日:
2012.01.19
申请国别(地区):
US
年份:
2012
代理人:
摘要：
An implantable or ambulatory medical device can include a cardiac signal sensing circuit configured to provide a sensed cardiac depolarization signal of a heart of a subject, a respiration sensing circuit configured to provide a signal representative of respiration of the subject, and a control circuit communicatively coupled to the cardiac signal sensing circuit and the respiration circuit. The control circuit includes a tachyarrhythmia detection circuit configured to determine heart rate using the depolarization signal, determine a respiration parameter of the subject using the respiration signal, calculate a ratio using the determined heart rate and the determined respiration parameter, generate an indication of tachyarrhythmia when the calculated ratio satisfies a specified detection ratio threshold value, and provide the indication of tachyarrhythmia to a user or process.
