Miopatia pós-anestésica em equinos.

Abstract

The horses stand out against other species by being used by humans in various forms of equestrian sports, being truly called animal athletes. Given this holding, the horses are constantly encouraged to develop a muscular and skeletal contribution as well as receive increasingly cares for the health and well being. However, and taking as a base occurring intense and constant assaults on the locomotor system due to sports practice, a larger number of animals have undergone surgical procedures and anesthetics. Considering this fact, the post-anesthetic myopathy emerges as a major harmful consequences for the locomotor system due to these veterinary practices. This pathology is triggered by several factors and is presented by a wide range of clinical manifestations. The factors that allow the emergence of post-anesthetic myopathy begin with individual predisposing conditions such as excessive weight and even a possible genetic predisposition to the box. Anesthetic effects that interfere with blood pressure, cardiac output, peripheral vascular resistance may contribute to the emergence of this framework by reducing muscle blood supply and thereby generating harmful substances to the muscle as lactate and free radicals, and other substances that generate pain and constant unrest, which has been reported primarily in studies involving inhalation anesthesia with halothane and isoflurane. These effects also vary according to the combination of other drugs that are being used, their doses and combination of their different effects. Surgical utensils as inadequate surgical table surface can harm the members who are in contact with the table, which becomes more or less harmful depending on the type or duration recumbency. The characteristics of the recovery room may also influence the process. With these aggressions myopathy shows signs when the animal tries to stay again in station, or already being in that position, with lameness, swelling, and muscle twitching, sweating and mimics pain frequent, varying according to the extent of injury. There are several diagnostic methods that estimate the degree of muscle damage, such as biochemical tests for muscle enzymes (CK, AST, LDH), which estimate the blood flow, as the doppler, the image, and those who study the metabolism muscle location, such as microdialysis. The post-anesthetic myopathy should be prevented during anesthesia/surgery through the use of fluid resuscitation and vasoactive drugs to control hypotension and deficits in cardiac output. As a treatment commonly employed in drug tranquilizers/sedatives, steroids and nonsteroidal antiinflammatory drugs and thiamine.