Vol. 9, Issue 12, Part A (2025)

The present study was conducted at Veterinary Clinical Complex, NTR College of Veterinary Science, Gannavaram, from March to November 2023, to record the electrocardiographic, radiographic, echocardiographic and ultrasonographic findings in canine hypothyroidism. Twenty-seven hypothyroid dogs underwent ECG examination, while 15 were subjected to additional imaging studies. ECG abnormalities were observed in 55.56 percent of dogs, with low-voltage QRS complexes being most common. Radiography revealed cardiomegaly, pericardial effusion and hepatic changes, whereas ultrasonography showed hepatomegaly, hyperechoic liver, and renal alterations. Echocardiography demonstrated dilated cardiomyopathy, valvular regurgitations and ventricular enlargement. The study highlights the diagnostic utility of multimodal imaging for comprehensive assessment of systemic alterations in hypothyroid dogs.