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Colpitts ME, Fonfara S, Monteith G, Pires AR, Wong A, Raheb S, Lynne O'Sullivan M. Characteristics and outcomes of cats with and without pacemaker placement for high-grade atrioventricular block. J Vet Cardiol 2021; 34:37-47. [PMID: 33548737 DOI: 10.1016/j.jvc.2020.12.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 12/17/2020] [Accepted: 12/22/2020] [Indexed: 01/30/2023]
Abstract
INTRODUCTION Available information on characteristics and outcome in cats with high-grade atrioventricular block (AVB) that receive a pacemaker is limited. ANIMALS Twenty-two privately owned cats presenting with high-grade AVB. MATERIALS AND METHODS Medical records were retrospectively examined. Cats were grouped as having received a pacemaker (PACE group) or not having received a pacemaker (non-PACE group). Clinical characteristics and outcomes of groups were evaluated. RESULTS There were 10 cats in the PACE group and 12 cats in the non-PACE group. At presentation, syncope or seizure-like behavior (p = 0.004) and bradycardia (p = 0.043) were more common in the PACE than the non-PACE group. Historical lethargy (p = 0.015) and dull mentation (p = 0.045) were more common in the non-PACE group, as was clinically relevant systemic disease. Pacemaker placement improved syncope or seizure-like behavior in 100% of cats. The degree of AVB at presentation was not associated with pacemaker placement nor the future degree of AVB. The major complication rate of pacemaker placement was 40%. Intergroup survival was not significantly different (PACE group 1278 days, 95% confidence interval: 0-2145 days; non-PACE group 213 days, confidence interval: 1-not available, p = 0.77). CONCLUSIONS Pacemaker placement improved clinical signs in cats with high-grade AVB. A difference in survival time could not be demonstrated between cats that received and did not receive a pacemaker in this retrospective study. High-grade AVB can be transient and accompanied by systemic disease in some cats.
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Affiliation(s)
- M E Colpitts
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, 28 College Ave W, Guelph, Ontario, N1G 2W1, Canada
| | - S Fonfara
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, 28 College Ave W, Guelph, Ontario, N1G 2W1, Canada
| | - G Monteith
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, 28 College Ave W, Guelph, Ontario, N1G 2W1, Canada
| | - A R Pires
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, 28 College Ave W, Guelph, Ontario, N1G 2W1, Canada
| | - A Wong
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, 28 College Ave W, Guelph, Ontario, N1G 2W1, Canada
| | - S Raheb
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, 28 College Ave W, Guelph, Ontario, N1G 2W1, Canada
| | - M Lynne O'Sullivan
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, 28 College Ave W, Guelph, Ontario, N1G 2W1, Canada.
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