2016 ACVIM Forum Research Abstract Program

Ninety-three cats were included in the study, 31 cats with L-CHF and pleural effusion, 25 cats with L-CHF and pulmonary edema, 15 cats with pulmonary disease without evidence of cardiomyopathy, and 21 healthy cats. The median RA:Ao of the pleural effusion group (1.54, range 0.85-2.70) was significantly larger (P = 0.0004) than all other groups. The mean RA:LA ratio of the pleural effusion (0.73 AE 0.2) and pulmonary disease (0.75 AE 0.1) groups were different from the pulmonary edema (0.56 AE 0.2) and healthy (0.95 AE 0.1) groups (P < 0.0001), though not different from each other. Comparison of pulsed wave Doppler measurements of the pulmonic outflow revealed no significant difference in AT, ET, AT:ET, or PA Vmax between any groups. TR Vmax was measured in 7 pleural effusion cats (median 2.2 m/s, range 1.2-3.2) and 1 healthy cat (1.7 m/s).