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- Title
Transient Myocardial Thickening in Cats Associated with Heart Failure.
- Authors
Wilkie, L.; Law, V.; Connolly, D. J.; Luis Fuentes, V.; Novo Matos, J.; Pereira, N.; Glaus, T.; Kranjc, A.; Borgeat, K.; Loureiro, J.; Silva, J.
- Abstract
Background: Cats with hypertrophic cardiomyopathy (HCM) and congestive heart failure (CHF) can have resolution of both left ventricular hypertrophy and CHF. Objectives: To describe the clinical characteristics of cats with transient myocardial thickening (TMT) and CHF compared with a control population of cats without resolution of HCM. Animals: A total of 21 cats with TMT, 21 cats with HCM. Methods: Retrospective study. Clinical records at 4 veterinary centers were searched for TMT cases and a control group of cats with HCM and CHF. TMT was defined as initial maximal left ventricular wall thickness (LVWT) ≥6 mm with left‐sided CHF, with subsequent resolution of CHF, reduction in left atrium/aorta (LA/Ao), and LVWT<5.5 mm. HCM was defined as persistent LVWT ≥6 mm. Results: Cats with TMT were younger (2 [0.4–11.4] years) than cats with HCM (8 [1.6–14] years) (<italic>P</italic> < 0.0001), and antecedent events were more common (15/21 versus 6/21, respectively) (<italic>P</italic> = 0.01). In cats with TMT, LVWT normalized from 6.8 [6.0–9.7] mm to 4.8 [2.8–5.3] mm and LA/Ao decreased from 1.8 [1.6–2.3] to 1.45 [1.2–1.7] after a mean interval of 3.3 (95% CI: 1.8–4.7) months. CHF recurred in 1 of 21 TMT and 15 of 21 cats with HCM. Cardiac treatment was discontinued in 20 of 21 cats with TMT and 0 of 21 HCM cats. All cats with TMT survived, whereas 8 of 19 cats with HCM died during the study period. Conclusions and Clinical Importance: TMT occurs in younger cats, and antecedent events are common. The prognosis is better in cats with CHF associated with TMT than HCM.
- Subjects
CAT diseases; HYPERTROPHIC cardiomyopathy; CONGESTIVE heart failure; LEFT ventricular hypertrophy; TAKOTSUBO cardiomyopathy; MYOCARDITIS
- Publication
Journal of Veterinary Internal Medicine, 2018, Vol 32, Issue 1, p48
- ISSN
0891-6640
- Publication type
Article
- DOI
10.1111/jvim.14897