Research Communications of the 27(th) ECVIM-CA Congress: Intercontinental, Saint Julian's, Malta, 14th to 16th September 2017

Two dogs from the diseased group were excluded, one due to the presence of persistent arrhythmia and another due to a recording time of less than 12 h. The mean heart rate of the diseased group was higher than that of the control group when HRV parameters were calculated from 6 h of resting data for each group. All of the measured parameters of HRV (SDNN, SDNNIDX, PNN50%, RMSSD, SD1, SD2, SD1/SD2, HFmsec2, LFmsec2), apart from SDANN, were lower in the diseased group than the control group (P < 0.03). There was no distinct Poincar e plot pattern evident for the diseased group when compared to the healthy controls. There was no significant difference in any of the HRV measurements over 12 h of recording between dogs with intracranial lesions present on imaging (n = 7) and those with no imaging abnormalities (n = 3). Neither was there a significant difference between those who were alive 3 months following data collection (n = 5) and those who were not (n = 5).