Dissertação
Nefrostomia percutânea ecoguiada em cães
Fecha
2006-02-23Registro en:
SANTAROSA, Ingrith Aparecida Mazuhy. Ultrasound-guided percutaneous nephrostomy in dogs. 2006. 36 f. Dissertação (Mestrado em Medicina Veterinária) - Universidade Federal de Santa Maria, Santa Maria, 2006.
Autor
Santarosa, Ingrith Aparecida Mazuhy
Institución
Resumen
The technological development of imaging equipment has allowed for the
improvement of pre-existing procedures and for the creation of new options in
treatment, mainly in the application of urinary treatment, by introducing minimally
invasive techniques. Hydronephrosis often originates from the partial or complete
obstruction of the urine flow and it can affect one or both kidneys, causing dilation
and progressive functional impairment. When renal function is evidenced by exams
such as the excretory urography or scintigraphy, it becomes vital to recover the
kidney with hydronephrosis, especially if the other damaged. Urinary drainage by
percutaneous nephrostomy promotes immediate relief of intrarenal pressure,
diverting the urine flow when its habitual trajectory is damaged. Furthermore,
temporary drainage can be utilized, providing time for an adequate diagnosis and
therapeutic planning or even avoiding or postponing a alternative of greater
dimension and higher risk. The aim of this study was to describe and adjust the
percutaneous nephrostomy technique, using ultrasound as a real-time guide to insert
a catheter into the dilated pelvis. The procedure was performed on eight dogs, of
both sexes, weighing between 10 and 17.5Kg, with unilateral hydronephrosis
produced experimentally. The Seldinger and direct insertion techniques were used
for the introduction of a pigtail catheter. The confirmation of the insertion of the
cateter into the kidney was carried out by the infusion of a 30 per cent diluted iodine
contrast medium according to the percutaneous antegrade pyelography. Washing
with sterile saline solution through the catheter impeded the interruption of the urine
flow by clots after the insertion. The technique demonstrated satisfactory results in
urinary drainage of hydronephrosis in dogs, proving to be a quick, efficient and safe
alternative.