Donald L. Hopper,John M. Voegele,Jesse W. Hartley,Avram Scheiner
申请号：
US13967864
公开号：
US20130331902A1
申请日:
2013.08.15
申请国别(地区):
US
年份:
2013
代理人:
摘要：
Cardiac monitoring and/or stimulation methods and systems employing dyspnea measurement. An implantable cardiac device may sense transthoracic impedance and determine a patient activity level. An index indicative of pulmonary function is implantably computed to detect an episode of dyspnea based on a change, trend, and/or value exceeding a threshold at a determined patient activity level. Trending one or more pulmonary function index values may be done to determine a patients pulmonary function index profile, which may be used to adapt a cardiac therapy. A physician may be automatically alerted in response to a pulmonary function index value and/or a trend of the patients pulmonary index being beyond a threshold. Computed pulmonary function index values and their associated patients activity levels may be stored periodically in a memory and/or transmitted to a patient-external device.
