Navegando por Palavras-chave "lithotripsy"

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    Development of a urinary lithiasis localizer mechanism to couple ultrasound and extracorporeal lithotripsy equipment in canine model
    (Sociedade Brasileira de Urologia, 2006-10-01) Andrade, Enrico [UNIFESP]; Alarcon, Gustavo [UNIFESP]; Pompeu, Eduardo [UNIFESP]; Nardozza Júnior, Archimedes [UNIFESP]; Claro, Joaquim A. [UNIFESP]; Ortiz, Valdemar [UNIFESP]; Srougi, Miguel [UNIFESP]; Universidade Federal de São Paulo (UNIFESP); Universidade de São Paulo (USP)
    INTRODUCTION: Due to the evolution of extracorporeal lithotripsy equipment (ESWL) and presently, the fact that most part of the equipment does not present ultrasound to localize urinary calculi, a system that allows adapting ultrasound equipment to ESWL equipment was developed, disposing only of fluoroscopy. Thus, this equipment was developed and was tested in urinary stones in canine models, to check its precision in relation to fluoroscopy. METHOD: Seven male dogs were utilized with the introduction, in the bladder through the ureteral route, of chalkstones, with initial localization by fluoroscopy, with a further ultrasound coincidence check localization of the vesical stones, being submitted to ESWL with a 3-hour, 21 days and 60 days follow-up after the procedure. RESULTS: Success of localization in all animals was verified presenting elimination of stones in the first micturitions, after ESWL. No complications were verified in those animals for 60 days. CONCLUSION: We verified that this equipment can lead to an update of the equipment that use only fluoroscopy, increasing in this way, their technical capacity in the treatment of urinary calculi, mainly in cases of non-radiopaque stones.
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    Effect of shock wave reapplication on urinary n-acetyl-beta-glucosaminidase in canine kidney
    (Sociedade Brasileira de Urologia, 2004-04-01) Fortes, Marco A.q.r. [UNIFESP]; Andriolo, Adagmar [UNIFESP]; Ortiz, Valdemar [UNIFESP]; Srougi, Miguel [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    OBJECTIVE: Renal tubular damage can be assessed with the aid of urinary dosing of N-acetyl-beta-glucosaminidase (NAG) and it is possible to demonstrate a significant correlation between shock wave and damage to renal parenchyma. The objective of this study was to assess the effect of shock wave reapplication over urinary NAG in canine kidney. MATERIALS AND METHODS: The authors submitted 10 crossbred dogs to 2 applications of 2000 shock waves in a 24-hour interval in order to assess urinary NAG values after 12, 24, 36 and 48 hours. RESULTS: Twelve hours following the first shockwave application there was an increase in NAG of 6.47 ± 5.44 u/g creatinine (p < 0.05). Twelve hours and 24 h following the second application there was no increase in the urinary enzyme, - 2.56 ± - 7.36 u/g creatinine and 2.89 ± - 7.27 u/g creatinine, respectively (p > 0.05). CONCLUSION: Shock wave reapplication with a 24-hour interval did not cause any increase in urinary NAG.
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    Effects of repeated extracorporeal shock wave on kidney apoptosis of normal and diabetic rat
    (Sociedade Brasileira de Urologia, 2008-02-01) Kira, Vicente Massaji [UNIFESP]; Fagundes, Djalma José [UNIFESP]; Bandeira, César Orlando Peralta [UNIFESP]; Kaufman, Oskar [UNIFESP]; Fagundes, Anna T. N. [UNIFESP]; Ortiz, Valdemar [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    OBJECTIVE: To assess the effect of repeated extracorporeal shock waves (ESW) on the apoptosis of renal parenchyma in normal and diabetic rats by the caspase-3 expression. MATERIALS AND METHODS: 80 rats were assigned for ESW (Direx Tripter X1® - 14 KVA) to one of three groups with 50% rats with diabetes (A) and 50% normal (B) in each: G1 (n = 40): no ESW; G2 (n = 20): one ESW; G3 (n = 20): two ESWin an interval of 14 days. The animals were sacrificed 3 days after the ESW and samples of the renal parenchyma were histologically prepared, stained by the caspase-3 cleavage immunohistochemical method, and the apoptotic index (ApIn) was calculated by computer program Image Pro-Plus V 4,5,1 Media Cybernetics® ( ApIn = number of apoptotic cells in the microscopic section / total cells in the microscopic section). RESULTS: There was no statistical difference in ApIn of normal rats with one ESW (8.4 + 0.2) or two ESW (9.1 + 0.3) and both were similar to the control group with no ESW (7.9 + 0.2). The ApIn of diabetic rats with one ESW (7.4 + 0.3) was similar to the normal rats with one or two ESW. On the other hand, the ApIn was statistically higher in diabetic rats with two ESW (11.9 + 0.4) than in diabetic rats with one ESW (7.4 + 0.3). CONCLUSIONS: The ApIn of normal rats with a single (2,000 SW) or repeated ESW (4,000 SW) was similar to the control animals without any ESW. In diabetic rats, the repeated ESW (4,000 SW) may result in an additional risk of tissue damage expressed by the higher ApIn.
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    Litíase urinária e gestação
    (Sociedade Brasileira de Nefrologia, 2014-09-01) Korkes, Fernando; Rauen, Eduardo Costa; Heilberg, Ita Pfeferman [UNIFESP]; Faculdade de Medicina do ABC; Hospital Israelita Albert Einstein; Hospital São Luiz; Universidade Federal de São Paulo (UNIFESP)
    The diagnosis of urolithiasis during pregnancy is common, even though no additional measures are required in asymptomatic cases. Renal colic or complications of urinary lithiasis occur more frequently during the last months of pregnancy, and there are several particularities for the diagnosis and treatment of this subset of women. The present manuscript aim to review the current knowledge concerning this subject and present authors personal experience.