Affordable Access

Return of atrial mechanical function following electrical conversion of atrial dysrhythmias.

Authors
  • O'Neill, P G1
  • Puleo, P R
  • Bolli, R
  • Rokey, R
  • 1 Section of Cardiology, Baylor College of Medicine, Methodist Hospital, Houston, TX 77030.
Type
Published Article
Journal
American Heart Journal
Publisher
Elsevier
Publication Date
Aug 01, 1990
Volume
120
Issue
2
Pages
353–359
Identifiers
PMID: 2382612
Source
Medline
License
Unknown

Abstract

The return of atrial mechanical function and its relationship to embolic events following cardioversion of atrial arrhythmias is controversial. Fourteen patients with atrial arrhythmias were evaluated with pulsed Doppler echocardiography before and after direct current (DC) cardioversion. The atrial filling fraction increased significantly: 1.14 +/- 4.3% at baseline versus 14.9 +/- 13.3%, 13.4 +/- 11.4%, and 21.9 +/- 13.5% at 5 minutes, 30 minutes, and 24 hours, respectively, following cardioversion. Absent atrial mechanical activity was noted in four patients immediately after cardioversion. Mechanical activity resumed by 30 minutes in one patient and at 24 hours in two others. Those with delayed atrial function had lower stroke volumes and atrial filling fractions following cardioversion. An embolic event occurred in one patient who had immediate return of atrial mechanical activity. This patient also had the largest atrial filling fraction of any patient at 24 hours (41%). These data suggest that the degree of atrial mechanical activity following cardioversion is variable and that embolic episodes are not necessarily related to delayed return of atrial mechanical activity following cardioversion.

Report this publication

Statistics

Seen <100 times