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Arterial thromboembolism secondary to subaortic stenosis in a persian kitten

Ferreira, Alessandra Michelly; Stedile, Simone Tostes de Oliveira; Silva, Vinícius Bentivóglio Costa; Sousa, Marlos Gonçalves.
Acta sci. vet. (Online); 46(supl): 1-5, 2018. ilus
Artigo em Inglês | VETINDEX | ID: vti-728681


Background: Aortic stenosis refers to several types of anatomic and functional obstructions of the left ventricular outflow tract. In small animals, this anomaly is most commonly documented as either a congenital lesion or an obstruction that develops soon after birth. It is a hereditary disease, caused by a dominant autosomal gene and modifying genes that interfere with phenotype expression. Even though aortic thromboembolism may be a potential complication in cats with cardiac diseases, aortic stenosis is deemed rare in that species. In this paper, we report an unusual case of a Persian kitten with aortic stenosis that eventually developed arterial thromboembolism.Case: A 7-month-old Persian kitten (3.1 kg) was admitted to a Veterinary Teaching Hospital with a history of hindlimbs paralysis over the past 48 h, as well as excessive vocalization. Also, the cat presented with inappetence, adipsia, urine incontinence, and hematuria. On physical examination, we observed hypothermia and cold paws. The footpads were cyanotic and there were no palpable femoral pulses. Cardiac auscultation disclosed a regular fast pace (200 bpm) and a grade 2/6 murmur heard best over the left cardiac base, but irradiating to the contralateral hemithorax. Prothrombin time and activated partial thromboplastin time were within the normal reference range, but the complete blood count showed microcytosis, lymphopenia, and hyperproteinemia. Also, elevated alanine aminotransferase and BUN were identified. On the echocardiogram, we observed a subvalvular aortic stenosis, which resulted in concentric remodeling of the left ventricle and a mild left atrial dilation. The stenotic lesion was classified as mild. Also, the thoracic radiography unveiled cardiomegaly. The recommended therapy included atenolol(6.25 mg/cat PO, q24h), clopidogrel (18.7 mg/cat PO, q24h), enoxaparin (1 mg/kg SC, q24 h), methadone (0.2 mg/kg IM, q8h) and amoxicillin + potassium clavulanate (20 mg/kg SC, q12h).[...](AU)
Biblioteca responsável: BR68.1
Localização: BR68.1