Qi An,Pramodsingh Hirasingh Thakur,Yi Zhang,Viktoria A. Averina
申请号：
US14510392
公开号：
US20150126883A1
申请日:
2014.10.09
申请国别(地区):
US
年份:
2015
代理人:
摘要：
Devices and methods for detecting heart failure (HF) events or identifying patient at elevated risk of developing future HF events, such as events indicative of HF decompensation status, are described. The devices and methods can detect an HF event or predict HF risk using one or more physiologic sensor signals including an electrogram and a heart sound signal. A medical device can use the physiologic signals to calculate one more signal metrics indicative of systolic function of the heart, including relative timing between first and second signal features selected from signal features generated from the electrogram or the heart sound signals. The medical device can detect an HF event using the signal metrics, or use the signal metrics to calculate a composite risk indicator indicative of the likelihood of the patient later developing an event indicative of worsening of HF.
