Patterns of activation during ventricular fibrillation in open chest dogs

Author

Chen, Peng-Sheng ; Worley, Seth J. ; Ideker, Raymond E.

Author_Institution

Dept. of Med., California Univ., Med. Center, San Diego, CA, USA

fYear

1989

Firstpage

86

Abstract

Patterns of activation of electrically induced ventricular fibrillation (VF) were studied with computerized mapping techniques. The results showed that each of C.J. Wiggers´ (1940) four stages of VF was accomplished by an electrical correlate: reentry at the stimulus site, multiple wavelets traversing large regions with similar cycle lengths, multiple wavelets confined to fixed regions with different cycle lengths, and asynchronous electrical activity becoming intermittent. A transmural gradient of activation rate was demonstrated at the third and fourth stages of VF

Keywords

bioelectric phenomena; cardiology; activation patterns; activation rate transmural gradient; asynchronous electrical activity; computerized mapping techniques; cycle length; multiple wavelets; open chest dogs; reentry at stimulus site; ventricular fibrillation; Chaos; Defibrillation; Dogs; Electric breakdown; Electric shock; Electrodes; Fibrillation; Heart; Pathology; Rhythm;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in

Conference_Location

Seattle, WA

Type

conf

DOI

10.1109/IEMBS.1989.95584

Filename

95584