2017 ACVIM Forum Research Abstract Program

To that purpose, one evaluated 35 dogs with echocardiographic diagnosis of tricuspid regurgitation and PH, calculating the transtricuspid gradient regurgitation through Bernoulli modified equation and then adding an assumed right atrial pressure. Animals were selected into 5 groups: Pos-capillary PH group, composed by dogs with myxomatous mitral valve disease and clinical or echocardiographic congestion signs; Pre-capillary PH group including dogs with pulmonary disease. Each group was subdivided in Mild PH group, including dogs with pulmonary arterial pressure gradient estimated below 50 mmHg; and moderate/severe PH group, comprised by animals with pulmonary arterial pressure gradient over 50 mmHg; Pre-capillary mild group was composed by 14 dogs; precapillary PH moderate/severe group 6 dogs; pos-capillary PH mild group 6 dogs and pos-capillary PH moderate/severe group 9 dogs. All PH groups were comprised by animals between 5 and 16 years, 2.8 and 27.6 Kg and pulmonary arterial pressure estimated between 36 and 96 mmHg. These animals did not receive antihypertensive treatment until the time of examination. Control group with 6 clinically healthy dogs with no echocardiographic abnormality, 2 years old and weight between 9.1 and 12.7 Kg.