Computer detection of non-stationary T wave alternans using a new correlation method

被引：25

作者：

Burattini, L ^{[1
]}

Zareba, W ^{[1
]}

Couderc, JP ^{[1
]}

Titlebaum, EL ^{[1
]}

Moss, AJ ^{[1
]}

机构：

[1] Univ Rochester, Rochester, NY 14642 USA

来源：

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

关键词：

D O I：

10.1109/CIC.1997.648136

中图分类号：

R5 [内科学];

学科分类号：

1002 ; 100201 ;

摘要：

Detection of microvolt T wave alternans (TWA) is a non-invasive method to identify patients at risk for sudden cardiac death. ECGs show that visible TWA is often nonstationary. Thus, we developed a new correlation method (CM) for TWA detection, and we tested CM's ability to detect non-stationary TWA in comparison with accepted spectral method (SM). In a simulation study CM and SM were used to evaluate stationary and non-stationary TWA of different amplitude. Other simulated conditions included: background noise, poor synchronization and windowing of the T waves; and amplitude respiration modulation of the T wave. In our comparison of CM and SM, we found that only CM was able to detect non-stationary TWA. CM was more robust to a poor synchronization and windowing of T waves, but affected more by high amplitude modulation than SM. Both CM and SM detected TWA in the presence of background noise.

引用

页码：657 / 660

页数：4