Taraneh Ghaffari Farazi;Timothy A. Fayram;Edward Karst;Wenbo Hou;Allen J. Keel;Brian Jeffrey Wenzel
发明人:
Brian Jeffrey Wenzel,Timothy A. Fayram,Allen J. Keel,Edward Karst,Wenbo Hou,Taraneh Ghaffari Farazi
申请号：
US12637596
公开号：
US08321017B2
申请日:
2009.12.14
申请国别(地区):
US
年份:
2012
代理人:
摘要：
Implantable systems, and methods for use therewith, enable the monitoring of a patient's electromechanical delay (EMD) and arterial blood pressure. Paced cardiac events are caused by delivering sufficient pacing stimulation to cause capture. A cardiogenic impedance (CI) signal, indicative of cardiac contractile activity in response to the pacing stimulation being delivered, is obtained. One or more predetermined features of the CI signal are detected, and a value indicative of the patient's EMD is determined by determining a time between a delivered pacing stimulation and at least one of the detected one or more features of the CI signal. The value indicative of EMD can be used to more accurately determine metrics indicative of pulse arrival time (PAT), which can be used to estimate arterial blood pressure.
