Table 3. Mean ± SD of several variables for dogs with myxomatous mitral valve degeneration in each International Small Animal Cardiac Health Council (ISACHC) class.

HR, heart rate; SBP, systolic blood pressure; VHS, vertebral heart score; EF, ejection fraction; FS, fractional shortening; LA/Ao, left atrium aortic root ratio; EDV, end diastolic volume; ESV, end systolic volume. Differences were considered significant if p < 0.0001 compared with each group and was determined by one-way ANOVA with Tukey's range test. ^*p < 0.0001.