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  • Title: A comparison of cooling methods for laparoscopic partial nephrectomy.
    Author: Naya Y, Kawauchi A, Yoneda K, Ushijima S, Naitoh Y, Soh J, Ito Y, Mizutani Y, Miki T.
    Journal: Urology; 2008 Sep; 72(3):687-9. PubMed ID: 18374397.
    Abstract:
    OBJECTIVES: To evaluate appropriate cooling methods in laparoscopic partial nephrectomy. METHODS: Under general anesthesia, 21 porcine kidneys were exposed retroperitoneoscopically. Ice slush (500 g) was put into the retroperitoneal cavity after renal vascular clamping. Renal parenchymal temperature was measured by a thermometer. Seven kidneys were cooled only by ice slush (group I). In seven kidneys, 200 mL of 4 degrees C saline was infused around the kidney 45 minutes after vascular clamping (group II). In seven kidneys, 4 degrees C saline was irrigated continuously through a 5F ureteral catheter, which was inserted into the ureter (group III). RESULTS: In group I, 21 minutes after vascular clamping, the lowest temperature achieved was 13.2 degrees C, and at 47 minutes the temperature exceeded 20 degrees C. In group II, the lowest temperature achieved was 13.0 degrees C 23 minutes after vascular clamping, and at 59 minutes the temperature exceeded 20 degrees C. In group III, the lowest temperature of 10.6 degrees C was achieved at 27 minutes, and at 79 minutes the temperature exceeded 20 degrees C. CONCLUSIONS: In complicated cases of laparoscopic partial nephrectomy, cooling with both ice slush and ureteral catheter irrigation was thought to be effective. When the renal collecting system is opened, an additional infusion of cooled water may also be effective.
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