Jeroen Van Goudoever,Olaf Schraa,Karel H. Wesseling
申请号：
US12669890
公开号：
US08465435B2
申请日:
2007.07.20
申请国别(地区):
US
年份:
2013
代理人:
摘要：
The invention relates to a method 10 for determining a beat-to-beat stroke volume 9a and/or a cardiac output 9b based on a measurement 2 of suitable arterial pressure data. At the step 4 a waveform of the arterial pressure pulse is assessed based on data obtained during the measurement of step 2. At step 6 a compliance or impedance in dependence of at least one measurement of arterial pressure data is computed using a non-linear model 7. The non-linear model may comprise an arctangent model. The arctangent model may be differentiated numerically or analytically to obtain the compliance or the impedance of an aortic portion. The thus obtained compliance or impedance may then be substituted into a linear model 8. The linear model 8 may comprise a Windkessel model 8a, or a Waterhammer model 8b or any other suitable linear pulse contour model 8c. As a result, the beat-to-beat stroke volume 9a and/or cardiac output 9b are computed.
