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公开(公告)号:US20100056931A1
公开(公告)日:2010-03-04
申请号:US12543227
申请日:2009-08-18
申请人: Leah Soffer , Haresh G. Sachanandani , Bin Mi , Yunlong Zhang
发明人: Leah Soffer , Haresh G. Sachanandani , Bin Mi , Yunlong Zhang
IPC分类号: A61B5/0215 , A61B5/029
CPC分类号: A61B5/029 , A61B5/0002 , A61B5/02028 , A61B5/02116 , A61B5/0215
摘要: A system and method sense a pressure signal in a pulmonary artery and compute a stroke volume and cardiac output. A pressure signal is received from an implantable pressure sensor disposed in a pulmonary artery. The pressure signal includes a systolic period and a diastolic period for determining a heart rate (HR) and a heart cycle. An iteratively-updating model can relate pressure signal and HR to a stroke volume (SV) and a cardiac output (CO). The model extracts a mean pulse pressure (MPP) from the PAP signal and receives a patient-specific vascular resistance model parameter and a patient-specific arterial compliance model parameter. CO can be calculated using the HR, the PAP signal, and the model. The vascular resistance model parameter and the arterial compliance model parameter are iteratively updated using the output of the model.
摘要翻译: 系统和方法检测肺动脉中的压力信号并计算出行程体积和心输出量。 从设置在肺动脉中的可植入压力传感器接收压力信号。 压力信号包括用于确定心率(HR)和心脏周期的收缩期和舒张期。 迭代更新模型可以将压力信号和HR相关联到行程体积(SV)和心输出量(CO)。 该模型从PAP信号中提取平均脉压(MPP),并接收患者特异性血管阻力模型参数和患者特异性动脉顺应性模型参数。 CO可以使用HR,PAP信号和模型来计算。 使用模型的输出迭代地更新血管阻力模型参数和动脉顺应性模型参数。