Hipotireoidismo em cães: relato de caso

Abstract

Hypothyroidism is related to a deficiency in the synthesis and secretion of thyroid hormones that are responsible for several metabolic processes, and can lead to different clinical signs, being the most common apathy, weight gain, even eating small amounts of food and dermatological problems. It is usually classified according to the etiopathogenesis in: primary when there is an affection of the thyroid gland, secondary, when there is a pituitary compromise and last of rare form, tertiary hypothyroidism, which occurs due to a deficiency of the hypothalamus in secreting HRT . The diagnosis should be based on the joint evaluation of anamnesis, clinical signs and laboratory tests, such as the thyroid function test. Treatment consists of hormonal supplementation with levothyroxine sodium (synthetic T4) throughout the life of the patient. The present study reports a case of hypothyroidism in a 5-year-old female dog (SRD), weighing 26 kg, attended at the University Hospital of Veterinary Medicine of the Federal University of Recôncavo da Bahia (HUMV-UFRB). After clinical evaluation of the animal the suspicion of hypothyroidism was confirmed through the hormonal dosage of T4l, and the animal presented clinical improvement with the treatment of hormone replacement as recommended in the literature.