The myelography for dogs and cats is a image and test consists of applying a radiographic contrast in spinal subaracnóideda space-space between two, arachnoid and pia mater, the three meninges covering the nervous system. The test is performed using general anesthesia and spinal tap can occur in the cervical segment, most used, and/or lumbar spine. In short, it is a radiographic technique that uses iodine contrast in order to show the dog or cat spinal path.
The myelography for dogs and cats much has been used in veterinary medicine for additional assessment indicated primarily when there is suspicion of understanding spinal cord injuries, which leads to neurological disorders, being a herniated disc, which can lead to paresis or paralyzes the thoracic and/or pelvic members animal affected, depending on your location.
This examination is considered to be a great tool to reveal the origin of intradurais masses being intra or extramedulares. These days, how can we rely on MRI exams, exam of choice for evaluation of spinal column, and tomographic myelogram/CT scans, tests that provide more information, this exam is in disuse. Despite the risks of edo puncture using contrast, the same is required, since it is not possible to show the spinal cord in a common x-ray.
The myelogram is not indicated in cases in which the animal presents some infectious disease, especially when there is indication of this frame type by brain spinal fluid analysis, because of the risk to spread the infection through the subarachnoid space.
about the risks of this image examination , the most common is the seizure, representing 75% of the cases of complication, the progression of radiographic contrast to neurocrânio, however the animal also can present vomiting, apnea during spinal tap, hyperthermia (fever) ehiperestesia.
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As the exam?
Used especially by Neurology , a myelogram requires that the animal be pré-medicado and numb, being positioned in lateral decubitus position – that is, lying on its side – that the puncture is performed with a needle. Occurs first drainage of CSF to then be injected the dye of choice, which allows visualization of the spinal canal.
Most of the time the LP is cervical, being held in the cisterna magna – one of the three openings in the subarachnoid space – and, when necessary, a new LP in the lumbar region, often between the fifth and sixth lumbar vertebrae (lumbosacral area). Then, the radiographic study of the site.
The CSF collection is of great importance to assist the diagnosis of dog or cat. In many cases the myelogram is not conclusive, but veterinary analysis of cerebrospinal fluid in association can guide or even close the diagnosis.
The procedure is usually accompanied by an anaesthetist and the veterinarian radiologist, and although it is not free of risks, presents the incidence of complications reduced when performed by judicious.
Before this image be given examination, the veterinarian shall submit to a thorough neurological exam and other tests are used as first choice. The myelogram is used when the simple radiograph is not compatible to the neurological examination or not evidence injuries, in addition to the cases where it is necessary to know the exact location of the lesion for planning a surgical procedure that is performed by a veterinary neurologist.
Link of this article: http://www.cachorrogato.com.br/cachorros/mielografia-dogs-cats/
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