Cited by 132Cardiac pacing and defibrillation studiesCardiac electrophysiology and arrhythmiasCardiac Arrhythmias and Treatments

The DOI matches its Crossref record; 41 of the 41 references it cites were found in a registry or an index.

Survival in second degree atrioventricular block

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Abstract

Two hundred and 14 patients with chronic second degree heart block were seen and followed up in the Devon Heart Block and Bradycardia Survey between 1968 and 1982. The patients were divided into three groups according to the type of block. In group 1 there were 77 patients with Mobitz type I block (mean age 69 years), in group 2, 86 patients with Mobitz type II block (mean age 74 years), and in group 3, 51 with 2:1 or 3:1 block (mean age 75 years). The five year survival was similar in all groups, being 57%, 61%, and 53% in groups 1, 2, and 3 respectively. The presence or absence of bundle branch block did not appear to influence prognosis. In particular, patients in group 1 without bundle branch block did not fare any better than those in group 2 both with and without bundle branch block. One hundred and three of the patients were fitted with pacemakers, the proportion being greatest in group 2. In each group a significantly larger number of paced patients survived than unpaced. The five year survival for all the paced patients in the study was 78% compared with 41% for the unpaced. Since the paced patients were slightly younger than the unpaced two age matched groups of 74 patients each were selected from the paced and unpaced patients, but the five year survival of those paced was still significantly better. It is concluded that in the patients in the present study chronic Mobitz type I block has a similar prognosis to that of Mobitz type II block. Unpaced patients with both types did very badly, whereas those fitted with pacemakers had a five year survival similar to that expected for the normal population. These results refute the benign reputation of chronic Mobitz type I block and imply that patients with this condition should be considered for pacemaker implantation on similar criteria to those adopted for patients with higher degrees of block.

Overview

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Crossref · 10.1136/hrt.53.6.587

Cites

41 of 41 references verified0 citation errors · 0 not checkable

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Citations

Cites

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Research works printed but not linked: 2

  1. Shaw DB, Kekwick CA. Potential candidates for pacemakers. Br HeartJ 1978; 40: 99-105.
  2. Schamroth L. The disorders of cardiac rhythm I. 2nd ed. Oxford: Blackwell, 1980: 181-4.

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Metadata

Authors
Shaw, D. B., Kekwick, C. A., Veale, D., Gowers, J., & Whistance, T.
Affiliations
Royal Devon & Exeter NHS Foundation Trust (GB)
Venue
Heart
Publisher
BMJ
Published
1985-06-01
Volume
53
Issue
6
Pages
587-593
ISSN
1355-6037 (ISSN-L)
OpenAlex
W2029244128
Cited by
132
References
41
Citations by year
2026: 2 · 2025: 2 · 2024: 3 · 2023: 1 · 2022: 5 · 2021: 6 · 2020: 3 · 2019: 6 · 2018: 6 · 2017: 7 · 2016: 1 · 2015: 3 · 2014: 4 · 2013: 4 · 2012: 9
FWCI
2.45
Type
journal article
Language
en
Open access
Locations
  • Heart (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac pacing and defibrillation studies
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac electrophysiology and arrhythmias
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Arrhythmias and Treatments
Keywords
second-degree atrioventricular block, Mobitz type II block, survival, prognosis, pacemaker implantation, bundle branch block, bradycardia
MeSH terms
Adult, Aged, Bundle-Branch Block, Cardiac Pacing, Artificial, Female, Heart Block, Heart Conduction System, Humans, Male, Middle Aged, Prospective Studies

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