两种方法测定心导纳图心缩间期的比较

COMPARATION OF TWO METHODS OF MEAURING SYSTOLIC TIME INTERVALS BY ADMITTANYANCE CARDIOGRAM

用微电脑以两种方法测定心导纳图心缩间期（ＳＴＩ）结果，并与颈动脉搏动图法ＳＴＩ测值比较。结果显示：以微电脑自动报分所得之心导纳疱微分图测ＳＴＩ各值与颈动脉搏动图法结果极为接近，而以采集的心导纳微分图测ＴＥＭＳ，ＰＥＰ，ＰＥＰ／ＬＶＥＴ值较其他二法值大。认为微电脑自动微分能避免信号经微分器处理所产生的时间延搁。

Two methods of measurement for svstolic time intervak(STI)6yadmittance cardiogramwith microcomputer are reported.The parameters were compared with the STI values at-tained from carotid pulse tracing(CPT).The results showed that the STI values measured bythe differential admittance cardiogram produced by microcomputer was similar to that fromCPT. The values of TEMS and PEP measured bv the differential admittance cardiogram pro-duced by differential circuit were longer than that from the other two methods,and the PEP/LVET ratio was also higher in this method.It is believed that the differential admittance car-diogram produced by microcomputer can avoid the time lag elicited by the differential circuit.