Study Scope of Cardiographic Diagnosis of Myxomatous Mitral Valvular Disease and Sinus Arrhythmia in Dogs and Cats

Myxomatous Mitral Valvular Disease (MMVD) is the most common cardiac problem in dogs, and sinus arrhythmia in cats is important to early diagnosis. This study aimed to diagnose Myxomatous Mitral Valvular Disease (MMVD) using echocardiography and sinus arrhythmia using electrocardiography in dogs and cats. This study evaluates two dogs, a male mix domestic, and two cats, a male mix domestic, with a range of 2-10 years old. This study was conducted at the Weka Animal Hospital, Faculty of Veterinary Medicine, Universitas Wijaya Kusuma Surabaya, utilizing sonography Edan Acclarix 3 (AX3) and Edan U60 curvilinear probe and electrocardiography five leads special for animals with the paper size 110 mm'30 m. For diagnosis of Myxomatous Mitral Valvular Disease (MMVD), the position of patients was right Parasternal Recumbency, and the Long Axis (RPLA) and short axis views were obtained. In the evaluation and diagnosis, B-mode and M-mode ultrasonography were performed. For diagnosis of sinus arrhythmia using electrocardiography, the patient's lateral right position was performed using five leads (Red, Yellow, Black, Green, and Red-White) with a paper speed of 50 mm/s with an amplitude of 10 mm/mV and paper speed of 50 mm/s with amplitude 20 mm/mV. The result is that dog 01 is diagnosed with MMVD stage B2, and cat 02 is sinus arrhythmia. Though the new method was not superior to objective assessment, it may facilitate learning and subjective interpretation.