Survival time and prognosis factors in hypertrophic cardiomyopathy cats with congestive heart failure

Abstract

Hypertrophic cardiomyopathy (HCM) is a common myocardial disease in cats. Nowadays, there is no study
determining the survival time of cats affected with HCM in Thailand. This study aimed to evaluate the survival time
in HCM cats with congestive heart failure (CHF) in Thailand and to determine the factors associating with survival
time. A retrospective study was performed in 47 HCM cats to analyze survival time and the association of survival time
and factors including sex, age, breeds, weight, physical findings, the presence of complications, medication and
echocardiographic findings. The data was analyzed by the Log-Rank test and displayed with the Kaplan-Meier curve.
The results reveal that the median survival time of HCM cats with CHF was 283 days and factors associating with a
lesser survival time were the presence of aortic thromboembolism (ATE), a decrease in left ventricular internal
dimension at end-diastole (LVIDd) < 10.8 mm and the use of other cardiovascular drugs besides the combination of
angiotensin converting enzyme inhibitors (ACEi) and furosemide. The data of this study is valuable for prognosis and
for the future management of HCM cats with CHF.