1.
Int J Biomed Comput
; 14(5): 381-8, 1983 Sep.
Article
in English
| MEDLINE
| ID: mdl-6642749
ABSTRACT
This paper describes the implementation of a microcomputer based P-wave synchronization system for the artificial heart. This system provides for synchronization of the cardiac prosthesis pump with P-wave signals from electrodes implanted in the remnant of the natural atrium. The device carries out the functions of P-wave detection and determines the duration of systole based upon a moving average of the time intervals between successive pulses. The system has been tested both on a mock circulatory system and in vivo on calves. The purpose of the paper is to provide details of the circuitry and algorithms used.
Subject(s)
Computers , Heart Conduction System/physiology , Heart, Artificial , Microcomputers , Animals , Cattle , Humans , Systole
2.
Trans Am Soc Artif Intern Organs
; 25: 379-82, 1979.
Article
in English
| MEDLINE
| ID: mdl-524609