发明名称 |
Estimation of stroke volume cardiac output using an intracardiac pressure sensor |
摘要 |
Techniques are described for estimating a rate of blood flow from a heart, such as a stroke volume or a cardiac output, as a function of a pressure in the heart. A pressure monitor may measure pressure values, and identify the times at which pressure values and valve opening and closing occur. The pressure monitor may estimate a velocity-time function as a function of the measured pressures and identified times, and may calculate a velocity-time integral by integrating the velocity-time function. The pressure monitor may also calculate an estimated velocity-time integral directly as a function of the measured pressures and the identified times. The pressure monitor may calculate the stroke volume or cardiac output using the velocity-time integral. The pressure monitor may control a delivery of therapy by an implantable medical device as a function of the stroke volume or cardiac output.
|
申请公布号 |
US2003199779(A1) |
申请公布日期 |
2003.10.23 |
申请号 |
US20020126733 |
申请日期 |
2002.04.22 |
申请人 |
MUHLENBERG LAMBERT;STRUBLE CHESTER |
发明人 |
MUHLENBERG LAMBERT;STRUBLE CHESTER |
分类号 |
A61B5/029;A61N1/365;(IPC1-7):A61B5/040 |
主分类号 |
A61B5/029 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|