Purvee P. Parikh;John C. Stroebel;Todd J. Sheldon;Karen J. Kleckner
发明人:
Purvee P. Parikh,John C. Stroebel,Todd J. Sheldon,Karen J. Kleckner
申请号：
US12700454
公开号：
US08744579B2
申请日:
2010.02.04
申请国别(地区):
US
年份:
2014
代理人:
摘要：
The invention provides methods and apparatus for determining in a non-tracking pacing mode (e.g., DDI/R, VVI/R) whether a ventricular pacing stimulus is capturing a paced ventricle, including some or all of the following aspects. For example, increasing a ventricular pacing rate a nominal amount to an overdrive pacing rate higher than a most recent heart rate and evaluating a conduction interval from a first pacing ventricle to a second sensing ventricle and then continuing to monitor the underlying rate to ensure that a threshold testing pacing rate will not exceed a predetermined minimum interval and providing pacing stimulation to the first ventricle and sensing the second ventricle to determine whether the pacing stimulation to the first ventricle was one of sub-threshold and supra-threshold. The methods and apparatus are especially useful in conjunction with ensuring actual delivery of a ventricular pacing regime (e.g., cardiac resynchronization therapy or “CRT”).
