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Search Results: 1 - 10 of 262441 matches for " Anuar I.;Dénes "
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Laparoscopic nephrectomy in live donor
Mitre Anuar I.,Dénes Francisco T.,Piovesan Affonso C.,Sim?es Fabiano A.
International braz j urol , 2004,
Abstract: OBJECTIVE: To present the initial experience of videolaparoscopic nephrectomy in live renal donor. MATERIALS AND METHODS: In the period from April 2000 to August 2003, 50 left nephrectomies in live donor were performed by videolaparoscopy for transplantation. Twenty-eight patients were male (56%) and 22 female (44%). Mean age was 37.2 years, and the mean body mass index (BMI) was 27.1 kg/m2. RESULTS: Mean surgical time was 179.5 minutes, and warm ischemia time of the graft was 3.79 minutes. The mean estimated bleeding was 141 mL. There was no need of blood transfusion or conversion to open surgery. In 42 cases (84%), the vascular portion of the graft was considered good by the recipient's surgical team and in all cases, the ureter was considered of proper size, though in one of them (2%) its vascularization was considered improper. The transplanted kidneys produced urine still in the surgical room in 46 of the 50 transplantations considered. In only 2 cases opioid was required for analgesia. In average, 3.1 doses of dipyrone were used for each patient during hospital stay, and hospital discharge occurred, in average, after 3.2 days post-operatively. Two patients required re-operations and one of them evolved to death. CONCLUSIONS: The laparoscopic nephrectomy in live donor for renal transplantation is an alternative to conventional open surgery. In relation to the graft, no alteration, either anatomic or functional, was detected. Though there is already a large documentation in the international literature regarding this procedure, in our setting a prospective randomized study with the usual surgical study is still necessary in order to prove the advantages and disadvantages of the method.
A litotripsia extracorpórea no tratamento de cálculos urinários em crian as
Duarte Ricardo J.,Mitre Anuar I.,Dénes Francisco T.,Giron Amilcar M.
Jornal de Pediatria , 2002,
Abstract: Objetivo: cálculos urinários atingem de 5 a 10% da popula o em alguma fase da vida. Destes casos, somente 2 a 3% s o crian as. O tratamento da litíase urinária na faixa pediátrica, com o uso de métodos minimamente invasivos, representa uma alternativa cada vez mais atraente. O presente trabalho objetiva apresentar resultados de litotripsia extracorpórea como tratamento minimamente invasivo de litíase urinária na infancia. Métodos: no período de setembro de 1991 a setembro de 2000, foram tratadas e acompanhadas 87 crian as, sendo que seis delas tinham dois cálculos; portanto foram tratados 93 cálculos urinários. Foi utilizado o equipamento de litotripsia extracorpórea por ondas de choque, da Dornier-Philips. Resultados: os cálculos piélicos, caliciais superiores e médios foram fragmentados e eliminados na porcentagem de 87,7% e 77,8%, respectivamente. Os cálculos localizados no cálice inferior foram eliminados em 64,7%. Dos três casos de cálculo coraliforme, somente um ficou livre do cálculo (33,3%). Os dez pacientes com cálculo ureteral ficaram livres de litíase (100%). Os cálculos vesicais foram tratados e eliminados em 60% dos casos. Conclus o: a litotripsia extracorpórea demonstrou ser uma forma eficiente de tratamento de cálculos piélicos, caliciais, ureterais e vesicais em crian as. Cálculos coraliformes n o tiveram bons resultados quando tratados por meio de litotripsia extracorpórea. Os resultados deste método foram influenciados pela localiza o e tamanho dos cálculos.
Laparoscopic nephrectomy in live donor
Mitre, Anuar I.;Dénes, Francisco T.;Piovesan, Affonso C.;Sim?es, Fabiano A.;Castilho, Lísias N.;Arap, Sami;
International braz j urol , 2004, DOI: 10.1590/S1677-55382004000100005
Abstract: objective: to present the initial experience of videolaparoscopic nephrectomy in live renal donor. materials and methods: in the period from april 2000 to august 2003, 50 left nephrectomies in live donor were performed by videolaparoscopy for transplantation. twenty-eight patients were male (56%) and 22 female (44%). mean age was 37.2 years, and the mean body mass index (bmi) was 27.1 kg/m2. results: mean surgical time was 179.5 minutes, and warm ischemia time of the graft was 3.79 minutes. the mean estimated bleeding was 141 ml. there was no need of blood transfusion or conversion to open surgery. in 42 cases (84%), the vascular portion of the graft was considered good by the recipient's surgical team and in all cases, the ureter was considered of proper size, though in one of them (2%) its vascularization was considered improper. the transplanted kidneys produced urine still in the surgical room in 46 of the 50 transplantations considered. in only 2 cases opioid was required for analgesia. in average, 3.1 doses of dipyrone were used for each patient during hospital stay, and hospital discharge occurred, in average, after 3.2 days post-operatively. two patients required re-operations and one of them evolved to death. conclusions: the laparoscopic nephrectomy in live donor for renal transplantation is an alternative to conventional open surgery. in relation to the graft, no alteration, either anatomic or functional, was detected. though there is already a large documentation in the international literature regarding this procedure, in our setting a prospective randomized study with the usual surgical study is still necessary in order to prove the advantages and disadvantages of the method.
A litotripsia extracorpórea no tratamento de cálculos urinários em crian?as
Duarte, Ricardo J.;Mitre, Anuar I.;Dénes, Francisco T.;Giron, Amilcar M.;Koch, Vera;Arap, Sami;
Jornal de Pediatria , 2002, DOI: 10.1590/S0021-75572002000500005
Abstract: objective: urolithiasis affects between five and 10% of the human population during their lifetime, only 2-3% of whom are children. therapy of urolithiasis in the pediatric age group with minimally invasive methodology represents an attractive alternative. this study presents results of extracorporeal shockwave lithotripsy, a minimally invasive methodology, for the treatment of urolithiasis in children. methods: in the period between september 1991 and september 2000, 87 children were submitted to extracorporeal shockwave lithotripsy; as six of them presented with two calculi 93 urinary calculi were treated over that period. the dornier-philips lithotriptor was used in the procedures. results: pelvic, superior and medium caliceal calculi were fragmented and eliminated in 87.7% and 77.8% of cases, respectively. inferior caliceal stones were eliminated in 64.7% of cases. only one of the three patients with staghorn calculi became stone-free after therapy (33.3%). all patients with ureteral calculi were stone-free after therapy. bladder stones were fragmented and eliminated in 60% of cases. conclusions: extracorporeal shockwave lithotripsy is a safe and effective treatment for pelvic, caliceal, ureteral and bladder urolithiasis in children. staghorn calculi have not shown satisfactory results when treated by this method. extracorporeal shockwave lithotripsy results were influenced in our experience by the position and size of the treated calculi.
Laparoscopic anti-reflux plasty: experience of the university of S?o Paulo
Dénes,Francisco T.; Mitre,Anuar I.; Arap,Marco A.; Duarte,Ricardo J.; Chambo,José L.; Brito,Artur H.; Srougi,Miguel;
Archivos Espa?oles de Urología (Ed. impresa) , 2008, DOI: 10.4321/S0004-06142008000200022
Abstract: objectives: vesico-ureteric reflux (vur) is a common cause of urinary tract infections in children, being less commonly diagnosed in adults. several anti-reflux plasties have been used successfully for the treatment of such condition, such as politano-leadbetter, cohen and gregoir-lich techniques, the latter being our preferred approach in open procedures. here we describe our experience with laparoscopic gregoir-lich anti-reflux plasty (lglp) in children and adults. methods: the lglp was used for the treatment of vur in 15 patients (7 adults and 8 children). four adults and 5 children had bilateral disease and both sides were treated at the same procedure. data was collected prospectively and we analysed age at treatment, laterality, degree of vur, previous anti-reflux procedures, operative time, number of detrusor stitches used in each side, intra-operative and post-operative complications, success rate and follow-up. results: a total of 23 ureteral units were treated. vur was graded as i in one unit, ii in 4 units, iii in 10 units, iv in 7 units and 1 unit was not classified, as it was diagnosed by radioisotopic cystography. two children had failed previous endoscopic procedures. there were no open conversions. two muccosal perforations occurred during the procedure and were successfully treated laparoscopically. nineteen out of 21 ureteral units (90%) presented no vur at the cystographic control, and no bladder dysfunction was identified on follow-up. conclusions: the lglp is a feasible, minimally invasive alternative for vur that reproduces the open procedure. it has an excelent success rate and is not associated to bladder disfunction, even in bilateral procedures.
Pheochromocytoma treated by laparoscopic surgery
Castilho Lísias Nogueira,Medeiros Paulo José de,Mitre Anuar Ibrahim,Dénes Francisco Tibor
Revista do Hospital das Clínicas , 2000,
Abstract: OBJECTIVE: To evaluate the results of the laparoscopic technique in the treatment of adrenal pheochromocytoma. METHOD: Ten patients, 7 men and 3 women, between 10 and 67 years of age (mean 48) with pheochromocytoma underwent transperitoneal laparoscopic adrenalectomy and were evaluated retrospectively, based on clinical, laboratory, and pathological diagnosis. In all cases there was a solid unilateral adrenal tumor, 5 on the left side and 5 on the right side, whose greater diameter varied from 7 to 80 mm (mean 32). Nine of the 10 patients were chronically hypertensive or had already had hypertensive crises. One patient was normotensive, but presented metabolic alterations suggestive of adrenergic hyperfunction. RESULTS: No deaths occurred in this series. There were two (20%) conversions to open surgery, one due to venous bleeding and one due to the difficulty of dissection behind the vena cava in a patient presenting a partially retro-caval tumor. Surgical time in the 8 non-converted cases ranged from 70 to 215 minutes (mean 136). One patient (10%) received blood transfusion, and another (10%) presented two complications - acute renal failure and a subcutaneous infection. Both had been converted to open surgery. None of the non-converted cases was transfused or presented complications. Hospital discharge occurred between the 2nd and 11th post-operative day (mean 3). The pathological exam of the surgical specimens confirmed the diagnoses of pheochromocytoma in all 10 cases, one of them associated with an aldosterone-producing cortical tumor. CONCLUSIONS: Laparoscopic adrenalectomy for selected patients presenting pheochromocytoma is feasible and provides good results.
Pheochromocytoma treated by laparoscopic surgery
Castilho, Lísias Nogueira;Medeiros, Paulo José de;Mitre, Anuar Ibrahim;Dénes, Francisco Tibor;Lucon, Antonio Marmo;Arap, Sami;
Revista do Hospital das Clínicas , 2000, DOI: 10.1590/S0041-87812000000300005
Abstract: objective: to evaluate the results of the laparoscopic technique in the treatment of adrenal pheochromocytoma. method: ten patients, 7 men and 3 women, between 10 and 67 years of age (mean 48) with pheochromocytoma underwent transperitoneal laparoscopic adrenalectomy and were evaluated retrospectively, based on clinical, laboratory, and pathological diagnosis. in all cases there was a solid unilateral adrenal tumor, 5 on the left side and 5 on the right side, whose greater diameter varied from 7 to 80 mm (mean 32). nine of the 10 patients were chronically hypertensive or had already had hypertensive crises. one patient was normotensive, but presented metabolic alterations suggestive of adrenergic hyperfunction. results: no deaths occurred in this series. there were two (20%) conversions to open surgery, one due to venous bleeding and one due to the difficulty of dissection behind the vena cava in a patient presenting a partially retro-caval tumor. surgical time in the 8 non-converted cases ranged from 70 to 215 minutes (mean 136). one patient (10%) received blood transfusion, and another (10%) presented two complications - acute renal failure and a subcutaneous infection. both had been converted to open surgery. none of the non-converted cases was transfused or presented complications. hospital discharge occurred between the 2nd and 11th post-operative day (mean 3). the pathological exam of the surgical specimens confirmed the diagnoses of pheochromocytoma in all 10 cases, one of them associated with an aldosterone-producing cortical tumor. conclusions: laparoscopic adrenalectomy for selected patients presenting pheochromocytoma is feasible and provides good results.
Comparative and prospective analysis of three different approaches for live-donor nephrectomy
Mitre, Anuar Ibrahim;Dénes, Francisco T.;Nahas, William Carlos;Sim?es, Fabiano A.;Colombo Jr., José Roberto;Piovesan, Affonso C.;Chamb?, José L.;Arap, Sami;Srougi, Miguel;
Clinics , 2009, DOI: 10.1590/S1807-59322009000100005
Abstract: purpose: living donor nephrectomy is usually performed by a retroperitoneal flank incision. due to the significant morbidity and long recovery time for a flank incision, anterior extra peritoneal sub-costal and transperitoneal video-laparoscopic methods have been described for donor nephrectomy. we prospectively compare the long-term results of donors as well as functional recipients submitted to these three approaches. materials and methods: a total of 107 live donor renal transplantations were prospectively evaluated from may 2001 to january 2004. donors were compared with regard to operative and warm ischemia time, postoperative pain, analgesic requirements, and complications. recipients were compared with regard to graft function, acute cellular rejection, surgical complications, and graft and recipient survival. results: the mean operative and warm ischemia times were longer in the video-laparoscopic group (p<0.001), whereas patients of the flank incision group presented more postoperative pain (p=0.035), required more analgesics (p<0.001), had longer hospital stays (p<0.001), and suffered more pain on the 90th day after surgery (p=0.006). in the sub-costal and flank incision groups, there was a larger number of paraesthesias and abdominal wall asymmetries (p<0.001). recipient groups were demographically comparable and presented similar acute tubular necrosis incidence and delayed graft function. the incidence of acute cellular rejection was higher in the video-laparoscopic and flank incision groups (p=0.013). there was no difference in serum creatinine levels, surgical complications, or recipient or graft survival between groups. conclusions: the video-laparoscopic and sub-costal approaches proved to be safe, and to provide donor advantages relative to the flank incision approach. among recipients, the complication rate, graft survival, and recipient survival were similar in all groups.
The short-term effect of surgical treatment for stress urinary incontinence using sub urethral support techniques on sexual function
Pinto, Antonio C.;Baracat, Fabio;Montellato, Nelson D.;Mitre, Anuar I.;Lucon, Antonio M.;Srougi, Miguel;
International braz j urol , 2007, DOI: 10.1590/S1677-55382007000600011
Abstract: objectives: to evaluate the impact of surgical treatment of stress urinary incontinence on the sexual function of women and to identify whether such treatment can improve their sexual function and overall quality of life. materials and methods: 64 heterosexual women with such indication were studied using the female sexual function index (fsfi) questionnaire, modified by introducing one question to evaluate the impact of urine loss. this was applied preoperatively and six months after surgery. result: among these 64 patients, 60.94% had regular sexual activity, while 39.06% did not. among sexually active patients, 59% had urine loss during sexual intercourse and, of these, 87% had urine losses in half or more of sexual relations. there were no statistically significant differences in assessments of desire, arousal, lubrication, orgasm, satisfaction and pain, or in totaling the scores, between the preoperative period and six months after surgical treatment. however, the scores for urine losses during sexual intercourse were significantly better after the operation. conclusions: analysis of the results allowed the following conclusions to be reached: urine lost during sexual activity was frequent among patients with stress urinary incontinence. suburethral support surgery did not jeopardize sexual activity. patients cured of stress urinary incontinence did not present improvement in sexual function.
From ?-Divergence to Quantum Quasi-Entropies and Their Use
Dénes Petz
Entropy , 2010, DOI: 10.3390/e12030304
Abstract: Csiszár’s ?-divergence of two probability distributions was extended to the quantum case by the author in 1985. In the quantum setting, positive semidefinite matrices are in the place of probability distributions and the quantum generalization is called quasi-entropy, which is related to some other important concepts as covariance, quadratic costs, Fisher information, Cram′er-Rao inequality and uncertainty relation. It is remarkable that in the quantum case theoretically there are several Fisher information and variances. Fisher information are obtained as the Hessian of a quasi-entropy. A conjecture about the scalar curvature of a Fisher information geometry is explained. The described subjects are overviewed in details in the matrix setting. The von Neumann algebra approach is also discussed for uncertainty relation.
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