Atrial rate variations in atrioventricular block patients: influences of ventricular rate and atrioventricular delay

Author

Chiu, H.W. ; Kao, T. ; Hsiao, H.H. ; Kong, C.W.

Author_Institution

Inst. of Biomed. Eng., Nat. Yang-Ming Univ., Taiwan, China

fYear

1999

fDate

6/21/1905 12:00:00 AM

Firstpage

555

Lastpage

557

Abstract

Atrial rate variations (ARV) of nine atrioventricular (AV) block patients loaded with VDD pacemakers were analyzed with pacemaker-off mode, programmed at different fixed ventricular pacing rates (60, 90, 120 bpm) and with different AV delays in VDD pacing (80, 120, 160, 200 ms) to study the influences of ventricular rate and AV delay. ARV were measured by PP intervals on the atrial electrocardiogram (ECG) that was non-invasively recorded from an esophageal lead. In results, all ARV measures had no significant difference under different AV delays. Although no significant difference existed among all ARV frequency domain measures, the locations of the major powers were very diverse for different individuals under different pacing rates. However during pacemaker-off mode, the major spectral powers of ARV were centered on the band above 0.4 Hz

Keywords

electrocardiography; medical signal processing; pacemakers; PP intervals; VDD pacemakers; VDD pacing; atrial electrocardiogram; atrial rate variations frequency domain measures; atrioventricular block patients; atrioventricular delays; band; esophageal lead; fixed ventricular pacing rates; locations; major spectral powers; pacemaker-off mode; ventricular rate; Biomedical measurements; Blood pressure; Cardiology; Delay; Electrocardiography; Esophagus; Frequency domain analysis; Heart rate variability; Hemodynamics; Pacemakers;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Cardiology, 1999

Conference_Location

Hannover

ISSN

0276-6547

Print_ISBN

0-7803-5614-4

Type

conf

DOI

10.1109/CIC.1999.826031

Filename

826031