经食管降主动脉光电脉搏波特征参数与动态血压关系的初步研究
Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi(2012)
Abstract
研究经犬食管探测降主动脉的光电脉搏波特征参数与同步股动脉有创血压波的相关性。实验犬10只,经食管获取降主动脉光电脉搏波信号,同步记录股动脉有创血压信号。应用逐步回归分析法研究降主动脉脉搏波特征参数[H、h、h/H、g/H、At、s、H(1+ts/td)、k]与有创血压值的相关性。特征参数中与收缩压相关性较好的有k和h/H(引入比90%和80%);与舒张压相关性较好的有k、H和s(引入比90%、80%和70%);与平均压相关性较好的有k和H(引入比均为90%),其相应的复相关系数均值分别为0.871、0.900和0.856。研究结果表明:经食管降主动脉脉搏波特征参数与收缩压、舒张压及平均压具有特定的相关性。
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Key words
characteristic parameters,photoelectric pulse wave,transesophageal,blood pressure
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