Results of renal ultrasonography performed before and during administration of saline (0.9% NaCl) solution to induce diuresis in dogs without evidence of renal disease |
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| Authors: | Jakovljevic S Rivers W J Chun R King V L Han C M |
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| Institution: | Department of Veterinary Clinical Science, School of Veterinary Medicine, Purdue University, West Lafayette, IN 47907, USA. |
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| Abstract: | OBJECTIVE: To evaluate the effect of saline (0.9% NaCl) solution administered IV to induce diuresis on 15 dimensional variables of the kidneys, size of renal pelvis, and diameter of the cranial part of the ureters. ANIMALS: 25 dogs without evidence of renal disease that were undergoing chemotherapy for various neoplasms. PROCEDURE: The kidneys, cranial aspect of the ureters, and trigone area of the urinary bladder of each dog were examined ultrasonographically before and during IV administration of saline solution (2.7 to 18.8 ml/kg of body weight/h). RESULTS: Ultrasonography revealed unilateral and bilateral pyelectasis during diuresis in 16 of 23 (70%) dogs but unilateral pyelectasis in only 1 dog before diuresis. Unilateral pyelectasis during diuresis was observed in 11 of 16 (69%) dogs. Pyelectasis during diuresis was categorized as slight in 15 of 21 (71%) kidneys. Degree of pyelectasis during diuresis was not identical in both kidneys of 13 of 16 (81 %) dogs. Diuresis did not induce ureterectasis, and it did not cause changes in 15 dimensional variables of the kidneys. CONCLUSIONS: In nonsedated, nonazotemic dogs, IV administration of saline solution to induce diuresis may cause slight pyelectasis without evidence of ureterectasis. CLINICAL RELEVANCE: When dilatation of the cranial part of the ureter is > 2 mm at the same time that ipsilateral pyelectasis is detected during ultrasonographic examination of the urinary tract system of a nonsedated, nonazotemic dog receiving IV administration of saline solution to induce diuresis, additional examinations are recommended to determine the possibility of early obstructive nephropathy or pyelonephritis. |
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