Dan E. Gutfinger,Fujian Qu,Alex Soriano,Ryan Rooke,Yelena Nabutovsky,Riddhi Shah
申请号：
US13007424
公开号：
US20120035495A1
申请日:
2011.01.14
申请国别(地区):
US
年份:
2012
代理人:
摘要：
Various techniques are provided for use with an implantable medical device for exploiting near-field impedance/admittance. Examples include techniques for assessing heart chamber disequilibrium, detecting chamber volumes and pressures, calibrating near-field-based left atrial pressure (LAP) estimation procedures and for assessing the recovery from injury at the electrode-tissue interface. In one particular example, the implantable device assesses the degree of concordance between the left ventricle (LV) and the right ventricle (RV) by quantifying a degree of scatter between LV and RV near-field admittance values. An increase in RV admittance is indicative of RV failure, an increase in LV admittance is indicative of LV failure, and an increase in both LV and RV admittance is indicative of biventricular failure.
