Table 1. Baseline characteristics of the study population dogs with naturally occurring, asymptomatic myxomatous mitral valve degeneration.
| Variables | MMVD dogs (n=22) | ||
|---|---|---|---|
| Control group (n=10) | Sildenafil group (n=12) | ||
| Age (years) | 12.5 ± 1.0 | 13.5 ± 0.6 | |
| Weight (kg) | 6.5 ± 1.2 | 7.4 ± 1.1 | |
| Breeds | |||
| Poodle | 3 | 3 | |
| Pomeranian | 2 | 2 | |
| Shih Tzu | 2 | 3 | |
| Small mixed breed | 2 | 1 | |
| Beagle | 1 | 1 | |
| Cocker | - | 1 | |
| Schnauzer | - | 1 | |
| Gender | |||
| M/Mc/F/Fs | 3/2/0/5 | 3/2/2/5 | |
| Classify the stage of cardiac diseases (ACVIM) | |||
| B1 | 7 | 9 | |
| B2 | 3 | 3 | |
Data are presented as mean ± standard error mean (SEM). MMVD: Myxomatous mitral valve degeneration, n: Number, kg: Kilogram, M: Male, Mc: Castrated male, F: Female, Fs: Spayed female, ACVIM: American College of Veterinary International Medicine.