Gene A. Bornzin,Rupinder Bharmi,Kritika Gupta,Riddhi Shah,Wenbo Hou,Edward Karst,Edith Arnold
申请号：
US14012726
公开号：
US20150065897A1
申请日:
2013.08.28
申请国别(地区):
US
年份:
2015
代理人:
摘要：
A method and system are provided for determining fluid status with a central venous system of a heart. Dynamic impedance (DI) data and static impedance (SI) data are collected over multiple cardiac cycles (CC) for a persistent time period of interest (POI). The DI and SI data are collected along a central venous (CV) vector that extends through a superior vena cava (SVC). The DI and SI data are analyzed to obtain DI long-term variation (LTV) information and SI LTV information, respectively, and to detect whether the DI LTV information and the SI LTV information include decreasing persistent trends in the DI and SI data. When decreasing persistent trends are detected in the DI and SI data, an overload output is generated to indicate that the heart is experiencing a volume overload state. The DI and SI data represent a surrogate for central venous pressure.
