The Use of Limit Amplitude Technique in ClinicalCardiac Electrical Signal Recording
10.3321/j.issn:1001-5515.2001.02.042
- VernacularTitle:限幅技术在临床心电信号记录中的应用
- Author:
Shounian FAN
1
;
Yangzhong PAN
;
Yunchang CAI
;
Junshi LIU
;
Guie LIU
;
Lin ZHAO
Author Information
1. Cardiovascular Institute of Guizhou Provincial People's Hospital
- From:
Journal of Biomedical Engineering
2001;18(2):326-329
- CountryChina
- Language:Chinese
-
Abstract:
Based on the electrophysiologic mechanism of cardiac electrical action and the theory of voltage effect, the limit amplitude technique was employed to obtain the best clinical record effects. The results showed that limiter could limit the oversize signals overlapping each other and make the tiny signals magnification whthout distortion, such as the His bundle deflection in His Bundel Electrogram. At the same time, all signals recorded at multichannel physiologic recorder were clear and did not interfere with each other. Furthermore, the limiter not only improved the recording quality but also protected the cardiac electronic equipment because overdue stimulation signal was limited at a given electronic level during the recording of transesophageal pacing.
