Method and apparatus for capture detection

摘要: The present invention permits discrimination between evoked response signals and post-pace polarization sensed by an implantable medical device noting the polarity of positive or negative change in voltage respect time (or dv/dt) waveform incident on lead electrodes during a short period immediately following paced event. It has been discovered that signal exhibits relatively constant capture detect window, may cause to reverse window. sign polarity, either negative, is determined design specific output circuitry. may, case, from positive, window interest. When magnitude so great does not waveform, can be achieved comparing with variable threshold for defined duration. In another embodiment, if amplitude indicative polarization, sensing detection employed.