The Development of Sinoatrial Dysfunction in Pacemaker Patients with Isolated Atrioventricular Block

The purpose of this paper is the assessment of sinus node competence over time in patients with isolated atrioventricular block (AV block). Patients implanted with AV synchronous pacemakers for isolated A V block between December 1993 and June 1995 were prospectively evaluated at predischarge, 6 wee...

Full description

Saved in:
Bibliographic Details
Published in:Pacing and clinical electrophysiology 1998-07, Vol.21 (7), p.1430-1434
Main Authors: MORSI, AMR, LAU, CHING, NISHIMURA, SANDRA, GOLDMAN, BERNARD S.
Format: Article
Language:English
Subjects:
Aged
Arrhythmia, Sinus - etiology
Arrhythmia, Sinus - physiopathology
AV block
cardiac pacing
Cardiac Pacing, Artificial - methods
Electrocardiography, Ambulatory
Equipment Design
Female
Follow-Up Studies
Heart Block - physiopathology
Heart Block - therapy
Humans
Male
Middle Aged
Pacemaker, Artificial
Prospective Studies
Quality of Life
sinoatrial dysfunction
Time Factors
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The purpose of this paper is the assessment of sinus node competence over time in patients with isolated atrioventricular block (AV block). Patients implanted with AV synchronous pacemakers for isolated A V block between December 1993 and June 1995 were prospectively evaluated at predischarge, 6 weeks, and subsequent 6 months follow‐up with respect to atrial rate monitors/24‐hour Holter and modified exercise test. Patients unable to maintain AV synchronous pacing or complete a modified exercise test were excluded. Sinus node competency is interpreted as: (1) absence of atrial brady‐ or tach‐yarrhythmia, (2) ability to achieve a minimum heart rate of 100 beats/min with modified exercise test or during daily activities. There were 58 patients (22 women), mean age 71.0 ± 13.8 with an average follow‐up of 30.4 months (11–40). Three patients did not complete a modified exercise test, 4 patients were lost to follow‐up, and 2 patients were unable to maintain AV synchronous pacing. Of the remaining 49 patients, 3 developed chronic or paroxysmal atrial fibrillation. No patient developed significant bradyarrhythmias. All patients achieved a heart rate of ≥ 100 beats/min modified exercise test. In our group of patients with isolated AV block within a moderate follow‐up period, development of Sinoatrial dysfunction was rare (6%). A longer follow‐up is required to delineate the natural history of Sinoatrial dysfunction in patients with isolated AV block.
ISSN:0147-8389
1540-8159
DOI:10.1111/j.1540-8159.1998.tb00214.x