Yong-Fu Xiao,Jeffrey M. Gillberg,Paul J. DeGroot,Eduardo N. Warman,Scott J. Brabec,John L. Sommer,Jon F. Urban,Lepeng Zeng
申请号:
US13357659
公开号:
US20120232606A1
申请日:
2012.01.25
申请国别(地区):
US
年份:
2012
代理人:
摘要:
An apparatus and method to discriminate cardiac events by sensing atrial and ventricular depolarizations having associated refractory periods thereafter. A fast ventricular rate is detected in response to the sensed ventricular depolarizations. Responsive to detecting the fast ventricular rate, at least one stimulus pulse is delivered to atrial tissue within the associated refractory period of the ventricle but outside of an associated refractory period of the stimulated atrial tissue. A ventricular response to the atrial tissue stimulus pulse is determined, and the cardiac event is discriminated based on the ventricular response to the atrial tissue stimulus pulse.