Anatomic and Excretory Urography Investigation of the Kidneys, Ureters and Urinary Bladder in Guinea Pig
2023
Azimzadeh, Saba | Alizadeh, Siamak | Hosseinchi, Mohammad Reza
BACKGROUND: Excretory urography is a method of imaging the kidneys, ureters, and urinary bladder which uses contrast medium containing the iodine compounds.OBJECTIVES: This study aimed to evaluate the anatomical structures of urinary tract in the nephrogram, pilogram, and cystogram phases, and determine the exact standard for the size of kidneys, ureters and urinary bladder in guinea pigs to be used to interpret the results, and clinical decisions.METHODS: This study was carried out on 10 guinea pigs with a mean age of 12±1.33 months and average weight of 1.12±0.18 kg. Before to the administration of contrast medium, each guinea pig was fast and Dimethicone 20 mg/kg was given orally. At the time of administration of contrast agent, each animal was sedated by using Ketamine 30 mg/kg and diazepam 5 mg/kg cocktail, and then 1500 mgI/kg of meglumine compound 60 % was injected subcutaneously over the shoulder area. Ventrodorsales and lateral abdominal X-rays were taken, thereafter every 5 minutes up to 60 minutes to complete the pylogram phase. In lateral radiographs of each guinea pig, the length of the body of the second lumbar vertebra was measured to be used as an indicator in determining the standard size of the kidneys.RESULTS: Based on the results of this study, the average length, width, and thickness of the right kidney compared to the length of the second lumbar vertebra were 2.19, 1.64, and 1.33 cm, and in the left kidney of 2.09, 1.53, and 1.41 cm and this average in right and left ureter was 6.41 and 6.22 cm, respectively.CONCLUSIONS: The exact standards can be used in the interpretation of results, and clinical decisions to determine the normal and abnormal size of kidneys, ureters and bladder in the guinea pigs.
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