title: ECG changes in dogs with hypothyroidism.
abstract: The results of electrocardiogram (ECG) recordings in 19 dogs with primary hypothyroidism are presented. Low voltage and inverted T waves were the most frequently observed abnormalities. In a number of dogs the ECG changes contributed to the diagnosis of hypothyroidism. A  few dogs had even been referred to the cardiopulmonary service because of decreased exercise tolerance and the ECG pointed to the need for thyroid function studies.
mesh_terms: D000818:Animals; D004283:Dog Diseases / Q000503:physiopathology*; D004285:Dogs; D004562:Electrocardiography / Q000662:veterinary; D005260:Female; D006321:Heart / Q000503:physiopathology*; D007037:Hypothyroidism / Q000503:physiopathology / Q000662:veterinary*; D008297:Male; D013960:Thyroid Function Tests