A comparison between the peak ear pulse derivative and the R-R interval variabilities

被引：1

作者：

Echeverria, JC ^{[1
]}

Medina, V ^{[1
]}

Carrasco, S ^{[1
]}

机构：

[1] Univ Autonoma Metropolitana Iztapalapa, Dept Ingn Elect, Mexico City 09340, DF, Mexico

来源：

COMPUTERS IN CARDIOLOGY 1997, VOL 24 | 1997年 / 24卷

关键词：

D O I：

10.1109/CIC.1997.647930

中图分类号：

R5 [内科学];

学科分类号：

1002 ; 100201 ;

摘要：

The power spectral analysis of the beat to beat variations in parameters related to the ventricular performance may provide information concerning the autonomic control of the mechanical function of the heart. The peak of the first derivative of the ear densitogram (PD) has been used as a non invasive index to evaluate the left ventricular function. The aim of our study was to examine the beat to beat variations in the PD of five subjects during a sequence of maneuvers that cause a different degree of autonomic modulation. Power spectral comparisons among the PD variability, the R-R variability and the respiratory amplitude suggest that the PD has periodical short term fluctuations which are partially explained by autonomic mechanisms.

引用

页码：445 / 448

页数：4