Research Communications of the 24th ECVIM-CA Congress

Dogs with MMVD had a significantly greater SI, non-planar angle, APDi, ALPMDi, ALAi and ALLi, while having a significantly lower posterior leaflet area (PLA), posterior leaflet length (PLL), annulus height (AH), tenting height (TH), tenting volume (TV), tenting area (TA), and AHCWR compared to normal dogs. AH, TV and TA were significantly greater in normal dogs, compared to dogs with MMVD. SI, APDi, AL-PMDi, AAi, ALAi and ALLi were significantly greater in dogs with Stages B2-C MMVD, compared to normal dogs and those in Stage B1. PLL and PLA were significantly lower in B2-C dogs, compared to normal dogs. TH was significantly different between the three groups; greatest in normal dogs and lowest in dogs in Stages B2-C, suggesting that flattening of the MV occurs with disease progression.