Predictors of well-being and quality of life in men who underwent radical prostatectomy: longitudinal study1.

OBJECTIVE: to identify socio-demographic, clinical and psychological predictors of well-being and quality of life in men who underwent radical prostatectomy, in a 360-day follow-up. METHOD: longitudinal study with 120 men who underwent radical prostatectomy. Questionnaires were used for characterization and clinical evaluation of the participant, as well as the instruments Visual Analog Scale for Pain, The Ways of Coping Questionnaire, Hospital Depression and Anxiety Scale, Satisfaction with Social Support Scale, Marital Satisfaction Scale, Subjective Well-Being Scale and Expanded Prostate Cancer Index. For data analysis, the linear mixed-effects model was used. RESULTS: the socio-demographic factors age and race were not predictors of the dependent variables; time of surgery, problem-focused coping, and anxiety were predictors of subjective well-being; pain, anxiety and depression were negative predictors of quality of life; emotion-focused coping was a positive predictor. Marital dissatisfaction was a predictor of both variables. CONCLUSION: predictor variables found were different from the literature: desire for changes in marital relationship presented a positive association with quality of life and well-being; emotion-focused coping was a predictor of quality of life; and anxiety was a predictor of subjective well-being.

Predictors of well-being and quality of life in men who underwent radical prostatectomy: longitudinal study / Preditores de bem-estar e qualidade de vida em homens submetidos à prostatectomia radical: estudo longitudinal / Predictores de bienestar y calidad de vida en hombres sometidos a prostatectomía radical: estudio longitudinal

ABSTRACT Objective: to identify socio-demographic, clinical and psychological predictors of well-being and quality of life in men who underwent radical prostatectomy, in a 360-day follow-up. Method: longitudinal study with 120 men who underwent radical prostatectomy. Questionnaires were used for characterization and clinical evaluation of the participant, as well as the instruments Visual Analog Scale for Pain, The Ways of Coping Questionnaire, Hospital Depression and Anxiety Scale, Satisfaction with Social Support Scale, Marital Satisfaction Scale, Subjective Well-Being Scale and Expanded Prostate Cancer Index. For data analysis, the linear mixed-effects model was used. Results: the socio-demographic factors age and race were not predictors of the dependent variables; time of surgery, problem-focused coping, and anxiety were predictors of subjective well-being; pain, anxiety and depression were negative predictors of quality of life; emotion-focused coping was a positive predictor. Marital dissatisfaction was a predictor of both variables. Conclusion: predictor variables found were different from the literature: desire for changes in marital relationship presented a positive association with quality of life and well-being; emotion-focused coping was a predictor of quality of life; and anxiety was a predictor of subjective well-being.

RESUMO Objetivo: identificar fatores preditores sociodemográficos, clínicos e psicológicos para o bem-estar e a qualidade de vida de homens submetidos à prostatectomia radical, em seguimento de 360 dias. Método: trata-se de um estudo longitudinal, com 120 homens submetidos à prostatectomia radical. Foram utilizados questionários para caracterização e avaliação clínica do participante, bem como os instrumentos Escala Visual Analógica de Dor, Inventário de Estratégias de Coping, Escala Hospitalar de Ansiedade e Depressão, Escala de Satisfação com o Suporte Social, Escala de Satisfação Conjugal, Escala de Bem-estar Subjetivo e o Expanded Prostate Cancer Index. Para análise dos dados, utilizou-se o modelo linear de efeitos mistos. Resultados: fatores sociodemográficos idade e raça não se mostraram preditores das variáveis dependentes; tempo de cirurgia, enfrentamento focado no problema e ansiedade foram preditores para bem-estar subjetivo; dor, ansiedade e depressão foram preditores negativos de qualidade de vida; estratégia de enfrentamento focado na emoção, positivo. A não satisfação conjugal foi preditora para ambas variáveis. Conclusões: foram identificados fatores preditores distintos da literatura: desejo de mudança nos níveis de satisfação conjugal apresentou relação positiva com qualidade de vida e bem-estar; modo de enfrentamento focado na emoção foi preditor de qualidade de vida; e ansiedade foi preditor de bem-estar subjetivo.

RESUMEN Objetivo: identificar factores predictores sociodemográficos, clínicos y psicológicos para el bienestar y la calidad de vida de hombres sometidos a prostatectomía radical, en seguimiento de 360 días. Método: se trata de un estudio longitudinal, realizado entre 120 hombres sometidos a prostatectomía radical. Se utilizaron cuestionarios para caracterización y evaluación clínica del participante, así como los instrumentos Escala Visual Analógica de Dolor, Inventario de Estrategias de Afrontamiento, Escala Hospitalaria de Ansiedad y Depresión, Escala de Satisfacción con el Soporte Social, Escala de Satisfacción Marital, Escala de Bienestar Subjetivo y el Índice de Cáncer de Próstata Ampliado. Se utilizó el modelo lineal de efectos mixtos para el análisis de los datos. Resultados: los factores sociodemográficos tales como edad y raza no se mostraron predictores de las variables dependientes; tiempo de cirugía, enfrentamiento enfocado en el problema y en la ansiedad fueron predictores para el bienestar subjetivo; dolor, ansiedad y depresión fueron predictores negativos de calidad de vida; estrategia de enfrentamiento enfocado en la emoción, positivo. La no satisfacción marital fue predictora para ambas variables. Conclusiones: se identificaron factores predictores distintos de la literatura: el deseo de cambio en los niveles de satisfacción marital presentó una relación positiva con la calidad de vida y el bienestar; modo de enfrentamiento enfocado en la emoción fue predictor de calidad de vida; y ansiedad fue predictor de bienestar subjetivo.

Lack of association between the ICIQ-SF questionnaire and the urodynamic diagnosis in men with post radical prostatectomy incontinence.

PURPOSE: To analyze the correlation between the "International Consultation on Incontinence Questionnaire-Short Form" (ICIQ-UISF) survey and the urodynamic findings in men with urinary incontinence (UI) following radical prostatectomy (RP). METHODS: 88 men who presented post-RP UI for a minimum of 1 year were enrolled prospectively. All answered the ICIQ-UISF survey and underwent urodynamic testing. Patients were divided in 3 Groups according to their urodynamic diagnosis: Group 1, patients with sphincteric incontinence (SI) alone; Group 2, patients with mixed UI (SI + Bladder Dysfunction (BD)); and Group 3, patients with BD alone. Data were analyzed using SPSS v16.0 software. RESULTS: There were 51 men in Group 1 (57.9%); 30 in Group 2 (34%); and 7 (7.9%) in Group 3. BD was found in 37/88 patients (42%), but it was the main cause of UI in only 14 patients (15.9%). There was no statistically significant difference among the mean ICIQ-UISFs values from groups 1, 2, or 3 (p>0.05). The symptoms of stress incontinence correlated with the urodynamic finding of SI (r = 0.59), and complaints of urinary urgency correlated with the presence of detrusor overactivity (DO) (r = 0.37), but these complaints did not predict the main cause of UI. CONCLUSION: The etiology of UI following RP cannot be predicted by the ICIQ-UISF survey. Symptoms of stress and urge incontinence predict the findings of SI and DO on urodynamic tests, but they cannot ascertain the main cause of UI. Urodynamic testing remains the gold standard to assess the etiology of post-RP UI.

Lack of association between the ICIQ-SF questionnaire and the urodynamic diagnosis in men with post radical prostatectomy incontinence / Falta de associação entre o questionário ICIQ-SF e o diagnóstico nos homens portadores de incontinência urinária pós-prostatectomia radical

PURPOSE: To analyze the correlation between the "International Consultation on Incontinence Questionnaire-Short Form" (ICIQ-UISF) survey and the urodynamic findings in men with urinary incontinence (UI) following radical prostatectomy (RP). METHODS: 88 men who presented post-RP UI for a minimum of 1 year were enrolled prospectively. All answered the ICIQ-UISF survey and underwent urodynamic testing. Patients were divided in 3 Groups according to their urodynamic diagnosis: Group 1, patients with sphincteric incontinence (SI) alone; Group 2, patients with mixed UI (SI + Bladder Dysfunction (BD)); and Group 3, patients with BD alone. Data were analyzed using SPSS v16.0 software. RESULTS: There were 51 men in Group 1 (57.9%); 30 in Group 2 (34%); and 7 (7.9%) in Group 3. BD was found in 37/88 patients (42%), but it was the main cause of UI in only 14 patients (15.9%). There was no statistically significant difference among the mean ICIQ-UISFs values from groups 1, 2, or 3 (p>0.05). The symptoms of stress incontinence correlated with the urodynamic finding of SI (r = 0.59), and complaints of urinary urgency correlated with the presence of detrusor overactivity (DO) (r = 0.37), but these complaints did not predict the main cause of UI. CONCLUSION: The etiology of UI following RP cannot be predicted by the ICIQ-UISF survey. Symptoms of stress and urge incontinence predict the findings of SI and DO on urodynamic tests, but they cannot ascertain the main cause of UI. Urodynamic testing remains the gold standard to assess the etiology of post-RP UI.

OBJETIVO: Analisar a relação entre as queixas clínicas mensuradas pelo "International Consultation on Incontinence Questionnaire-Short Form" (ICIQ-UISF) e os achados urodinâmicos em homens com incontinência urinária (IU) após a prostatectomia radical (PR). MÉTODOS: 88 homens que apresentavam IU por um período mínimo de 1 ano após a PR foram incluídos prospectivamente. Todos responderam o questinário "ICIQ-UISF" e foram submetidos a avaliação urodinâmica. Os pacientes foram categorizados em 3 grupos de acordo com o diagnóstico urodinâmico: Grupo 1, pacientes com incontinência esfincteriana isolada (IE); Grupo 2, pacientes com IU mista (IE + disfunção vesical (DV)); e Grupo 3, pacientes com DV isolada. Os dados foram analisados utilizando o software SPSS v16.0. RESULTADOS: Dos 88 pacientes avaliados, após a avaliação urodinâmica, 51 homens (57,9%) apresentaram IE isolada (Grupo 1); 30 homens (34%) apresentaram IE associada a DV (Grupo 2) e 7 homens (7,9%) tinham somente DV (Grupo 3). A DV foi encontrada em 37/88 pacientes (42%), mas foi a principal causa de IU em apenas 14 pacientes (15,9%). Não houve diferença estatisticamente significativa entre os valores das médias do "ICIQ-UISFs" entre os grupos 1, 2 ou 3 (p> 0,05). Os sintomas de incontinência de esforço se correlacionaram com o diagnóstico urodinâmico de IE (r = 0,59), e as queixas de urgência miccional se correlacionaram com a presença de hiperactividade do detrusor na avaliação urodinâmica (r = 0,37), entretanto apesar da correlação encontrada, os sintomas não foram capazes de identificar a principal causa da UI . CONCLUSÃO: A etiologia da UI após a PR não pode ser previsto pelo escore de sintomas obtidos através do "ICIQ-UISF". Os sintomas de perda urinária as manobras de estresse e de urgência miccional estão relacionados a presença de IE e hiperatividade detrusora na avaliação urodinâmica, entretanto estes sintomas não conseguem identificar com segurança qual é o principal fator da IU após a PR.O teste urodinâmico continua sendo o padrão ouro para avaliar a etiologia da IU após a PR.

Cistostomia / Cistostomy

Historicamente a abordagem da bexiga foi procedimento temido devido à alta morbidade. No século XIX foi proposto o acesso à bexiga por via suprapúbica, extraperitoneal, passando a ser amplamente utilizado. A cistostomia é a derivação vesical na qual se coloca um cateter no interior da bexiga, através da parede abdominal. São descritas as técnicas a céu aberto e por punção suprapúbica, suas indicações, contra-indicações e complicações.

Historically, surgery of the bladder has been feared due to the high morbidity associated with the procedure. In the nineteenth century, suprapubic, extraperitoneal access to the bladder was proposed and has been widely employed since then. Cystostomy is the vesical derivation in which a catheter is placed inside the bladder, through the abdominal wall. Here we discuss open surgical techniques and techniques involving suprapubic puncture, their indications, contraindications, and complications.

Compensatory renal growth and mitochondrial function: the influence of warm ischemia and reperfusion.

PURPOSE: To evaluate the influence of ischemia/reperfusion injury on renal compensatory growth (CGR) and mitochondrial function. METHODS: Forty five Wistar rats were divided in 3 groups: Control Group (GC) - 21 rats were submitted to a sham laparotomy and sacrificed at 1st (6 rats) and 7th (15 rats) postoperative days to evaluate the dry weight of both kidneys and their growth during 1 week (6 rats) and to quantify mitochondrial respiration (9 rats); Group 1 (G1) - 12 rats underwent right nephrectomy and were sacrificed 7 days later for analysis of renal mitochondrial function (6 rats) and dry weight (6 rats). Group 2 (G2) - renal warm ischemia for 60 minutes followed by right nephrectomy was performed in 12 rats; they were sacrificed 7 days later to evaluate renal mitochondrial function (6 rats) and dry weight (6 rats). RESULTS: Dry weight (mg) of left kidneys at 7th day: GC - 219+/-18, G1 - 281+/-23 and G2 - 338+/-39 (GCxG1 p<0.01; GCxG2 p<0.001; G1xG2 p<0.01). State 4 mitochondrial respiration rate and respiratory control ratio (RCR) were similar in all groups (p>0.05). State 3 respirations (mM/min/mg) in GC, G1 and G2 was respectively: 99+/-23, 132+/-22 and 82+/-44 (p<0.02; the only statistical difference noted was between groups G1xG2 - p<0.05). CONCLUSIONS: Following unilateral nephrectomy CRG is associated with an increase in state 3 of mitochondrial respiration. Renal ischemia/reperfusion injury enhances the CRG provoked by unilateral nephrectomy but such enhancement seems independent on mitochondrial respiration.

Cyclosporine action on kidneys of rats submitted to normothermic ischaemia and reperfusion.

PURPOSE: To verify if rat kidneys lesioned by ischaemia followed by reperfusion are affected by cyclosporine A (CsA). METHODS: Male Wistar rats were randomly divided into three groups, control (GS) and experimental (G1 and G2). G1 was subdivided in two: G1A composed of animals submitted to 60 minutes ischaemia and G1C with the same ischaemic procedure associated to 20 mg/kg/day CsA. Group G2 was subdivided and treated in the same way as G1 except that ischaemia was applied only for 40 minutes. Clamping the left renal artery followed by right side nephrectomy induced kidney ischaemia. Serum urea and creatinine were quantified on the day of surgery (D0) and in the following day (D1). Twenty four hours after reperfusion the left kidney was removed and histologically analyzed. RESULTS: Group GS had normal values for urea and creatinine both on D0 and D1 and did not show structural alterations. Renal function was not significantly different when G2C was compared to GS (p>0.05). Tissue lesions were smaller in G2C than in the other groups. CONCLUSIONS: Renal function was protected by CsA, which also reduced tissue lesions in the kidneys of rats submitted to 40 minutes ischaemia.

Renal ischemia and reperfusion injury: influence of chorpromazine on renal function and lipid peroxidation.

PURPOSE: To evaluate the influence of chlorpromazine (CPZ) on renal function and lipid peroxidation in a rat model of kidney ischemia/reperfusion injury. METHODS: Forty eight Wistar rats underwent a laparotomy for hilar clamping of left kidney with a bulldog clamp for 60 minutes followed by organ reperfusion and contralateral nephrectomy. Of these, 26 received 3mg/kg of CPZ intravenously 15 minutes before renal ischemia (G-E) while the remaining 22 were used as ischemic control group (G-C). Eleven rats of G-E and 8 of G-C were followed for blood urea nitrogen and creatinine determinations before renal ischemia and at 1st, 4th and 7th postoperative days. Samplings of left renal tissue were obtained at 5 minutes (5 rats from each group) and 24 hours (9 G-C and 10 of G-E) of reperfusion for malondialdehy (MDA) content determination. Controls of renal MDA content were determined in kidneys harvested from 6 additional normal rats. RESULTS: Acute renal failure occurred in all animals but levels of BUN and creatinine were significantly lower in G-E (p<0.001). MDA content rose strikingly at 5 minutes of reperfusion in both groups (p>0.05) and returned near to normal levels 24 hours later. CONCLUSION: CPZ conferred partial protection of renal function to kidneys submitted to ischemia/reperfusion injury that seems to be not dependent on inhibition of lipid peroxidation.

Long term evaluation of functional and morphological bladder alterations on alloxan-induced diabetes and aging: experimental study in rats.

PURPOSE: to evaluate structural and functional effects of Alloxan- induced diabetes and aging on bladder of rats. METHODS: evaluations were performed in three groups: A--8 weeks of age, B--44 weeks of age, C--44 weeks of age with alloxan-induced diabetes. Muscle layer thickness, extracellular matrix fibrosis and collagen were quantified on digital images of bladder samples. Cystometric evaluations before surgical vesical denervation (SVD), included maximum cystometric capacity (MCC), maximum bladder pressure (MBP), bladder contraction frequency (VCF), duration of bladder contraction (DC), threshold pressure (TP) and bladder compliance (BC). After SVD, maximum cystometric capacity (MCC), BC and maximum urethral closing pressure (MUCP) were also measured. RESULTS: Reduced extracellular matrix fibrosis concentration and contraction strength were found in the bladders of group C. Before SVD, bladder compliance was not different between groups. Alterations were observed in MCC after SVD. CONCLUSIONS: We did not notice smooth muscle hypertrophy in Alloxan-induced diabetic rats after 44 weeks. There was alteration in the total and relative amount of fibrosis and collagen. The cystometric studies support the idea that this morphological alterations are important to determine the different bladder functional patterns found in the aging and the Alloxan-induced diabetic animals.

Comparison of two experimental models of urodynamic evaluation in female rats.

PURPOSE: Urodynamic studies in small animals can be performed through urethral sounding or cystostomy. OBJECTIVE: To compare the two methods of urodynamic evaluation in female rats. METHODS: Ten female rats weighing on average 250 g, under anesthesia with urethane (1.25 mg/kg) were submitted in three repeats to an urethal catheter of 0,64 mm in external diameter for cystometric measurements of vesicle pressure(VP1) and contraction time (CT1). The catheter was extracted at a constant velocity of 0.05 cm/minute until complete exteriorization and determinations of maximal urethral pressure (UP1) and functional urethral length (FUL1). This was followed by a cystostomy with catheter PE50 and a new determination of the vesical pressure (VP2). After bladder denervation, a new cystometric record indirectly infered the maximum urethral closure pressure (UP2). The peak urethal pressure (UP3) and the functional urethral length (FUL2) were determined in another urethral sounding. The pressure registration system consisted of a continuous infusion pump regulated to a flow of 0.1 ml/minute connected both to the cystostomy catheter (PE-50) or the urethal catheter (0.64 mm) and the polygraph Narco-Biosystem. Statistical analysis employed the Wilcoxon non-parametric test RESULTS: Mean VP1= 48.2 mmHg (11,8 SD); Mean VP2 = 38.2 mmHg (9.0 SD) "p" (VP1 X VP2) = 0.0039. Mean CT1=30.2 s (21.5 SD); Mean CT2=20.0 s(7 SD) p (CT1 X CT2) = 1.28. Mean UP1 = 47.2 mmHg (6.5 SD); Mean UP2 = 21.3 mmHg (6.6 SD), mean UP3 = 40.7 mmHg(13.3 SD) p (UP1 X UP2) = 0.002; "p" (UP1 X UP3) = 0.084; p (UP2 X UP3) = 0.002. Mean FUL1=14.2 mm (1.9 SD); Mean FUL2= 14.1 mm (1.9 SD); p (FUL1 X FUL2) = 0.64. CONCLUSIONS: The methods employed to evaluate vesical and urethral pressures are different. The presence of the urethral catheter may be an obstructive factor. Surgical denervation up to the bladder neck level does not compromise urethral function.

Compensatory renal growth and mitochondrial function: the influence of warm ischemia and reperfusion / Hipertrofia renal compensatória e função mitocondrial: influência da isquemia quente e reperfusão

PURPOSE: To evaluate the influence of ischemia/reperfusion injury on renal compensatory growth (CGR) and mitochondrial function. METHODS: Forty five Wistar rats were divided in 3 groups: Control Group (GC) - 21 rats were submitted to a sham laparotomy and sacrificed at 1st (6 rats) and 7th (15 rats) postoperative days to evaluate the dry weight of both kidneys and their growth during 1 week (6 rats) and to quantify mitochondrial respiration (9 rats); Group 1 (G1) - 12 rats underwent right nephrectomy and were sacrificed 7 days later for analysis of renal mitochondrial function (6 rats) and dry weight (6 rats). Group 2 (G2) - renal warm ischemia for 60 minutes followed by right nephrectomy was performed in 12 rats; they were sacrificed 7 days later to evaluate renal mitochondrial function (6 rats) and dry weight (6 rats). RESULTS: Dry weight (mg) of left kidneys at 7th day: GC - 219±18, G1 - 281±23 and G2 - 338±39 (GCxG1 p<0.01; GCxG2 p<0.001; G1xG2 p<0.01). State 4 mitochondrial respiration rate and respiratory control ratio (RCR) were similar in all groups (p>0.05). State 3 respirations (mM/min/mg) in GC, G1 and G2 was respectively: 99±23, 132±22 and 82±44 (p<0.02; the only statistical difference noted was between groups G1xG2 - p<0.05). CONCLUSIONS: Following unilateral nephrectomy CRG is associated with an increase in state 3 of mitochondrial respiration. Renal ischemia/reperfusion injury enhances the CRG provoked by unilateral nephrectomy but such enhancement seems independent on mitochondrial respiration.

OBJETIVO: Avaliar a influência da lesão de isquemia/reperfusão na hipertrofia renal compensatória (HRC) e na função mitocondrial. MÉTODOS: 45 ratos Wistar foram divididos em três grupos: Grupo Controle (GC) - 21 ratos submetidos apenas à laparotomia e sacrificados no 1º dia (6 ratos) e 7º dia pós-operatório (15 ratos) para avaliar o peso seco de ambos os rins e seu crescimento durante uma semana (6 ratos) e quantificar a função mitocondrial (9 ratos); Grupo 1 (G1) - 12 ratos submetidos à nefrectomia direita e sacrificados após 7 dias para análise da função mitocondrial renal (6 ratos) e peso renal seco (6 ratos); Grupo 2 (G2) - isquemia renal quente durante 60 minutos no rim esquerdo seguida da nefrectomia direita foi realizada em 12 ratos, que foram sacrificados após 7 dias para avaliação da função mitocondrial (6 ratos) e peso seco (6 ratos). RESULTADOS: peso seco (mg) do rim esquerdo no 7º dia: GC= 219±18; G1=281±23 e G2=338±39 (GCxG1 p<0,01; GCxG2 p<0,001; G1xG2 p<0,01). O estado 4 da função mitocondrial e a Razão de Controle Respiratório (RCR) foram semelhantes em todos os grupos (p>0,05). O estado 3 da respiração mitocondrial (mMO2/min/mg) no GC, G1 e G2 foi, respectivamente: 99±23, 132±22 e 88±44 (p<0,02; a única diferença estatística foi observada entre os grupos G1xG2 - p<0,05). CONCLUSÕES: após nefrectomia unilateral a HRC está associada ao aumento do estado 3 da respiração mitocondrial. A lesão de isquemia/reperfusão renal aumenta a HRC estimulada pela nefrectomia unilateral, mas este aumento parece independer da respiração mitocondrial.

Cyclosporine action on kidneys of rats submitted to normothermic ischaemia and reperfusion / Ação da ciclosporina em rins de ratos submetidos à isquemia normotérmica e reperfusão

PURPOSE: To verify if rat kidneys lesioned by ischaemia followed by reperfusion are affected by cyclosporine A (CsA). METHODS: Male Wistar rats were randomly divided into three groups, control (GS) and experimental (G1 and G2). G1 was subdivided in two: G1A composed of animals submitted to 60 minutes ischaemia and G1C with the same ischaemic procedure associated to 20 mg/kg/day CsA. Group G2 was subdivided and treated in the same way as G1 except that ischaemia was applied only for 40 minutes. Clamping the left renal artery followed by right side nephrectomy induced kidney ischaemia. Serum urea and creatinine were quantified on the day of surgery (D0) and in the following day (D1). Twenty four hours after reperfusion the left kidney was removed and histologically analyzed. RESULTS: Group GS had normal values for urea and creatinine both on D0 and D1 and did not show structural alterations. Renal function was not significantly different when G2C was compared to GS (p>0.05). Tissue lesions were smaller in G2C than in the other groups. CONCLUSIONS: Renal function was protected by CsA, which also reduced tissue lesions in the kidneys of rats submitted to 40 minutes ischaemia.

OBJETIVO: Verificar se a ciclosporina A (CsA) afeta a lesão provocada pela isquemia seguida de reperfusão em rins de ratos. MÉTODOS: Ratos Wistar machos foram separados em grupos: 1 grupo controle (GS) e 2 grupos experimentais (G1 e G2). O G1 foi dividido em G1A - isquemia de 60 minutos; e G1C - isquemia de 60 minutos associada a 20 mg/kg/dia de CsA. O G2 foi dividido em G2C semelhante ao G1, exceto pelo tempo de isquemia de 40 minutos. A isquemia renal foi provocada pelo pinçamento da artéria renal esquerda, após o procedimento, foi realizada a nefrectomia direita. Dosagem de uréia e creatinina séricos foram feitos no dia da cirurgia (D0) e no dia seguinte (D1). Após 24 horas de reperfusão o rim esquerdo foi removido para análise histológica. RESULTADOS: No GS não foram observados alterações de uréia e creatinina em D0 e D1, tampouco alterações estruturais. A comparação entre GS e G2C não mostrou diferença na função renal (p>0,05); o grau de lesão tecidual foi menor em G2C do que nos demais grupos experimentais. CONCLUSÃO: A CsA protegeu a função renal e reduziu a lesão tecidual em rins de ratos submetidos a 40 minutos de isquemia.

Renal ischemia and reperfusion injury: influence of chorpromazine on renal function and lipid peroxidation / Lesão de isquemia e reperfusão renal: influência da clorpromazina na função renal e na peroxidação lipídica

PURPOSE: To evaluate the influence of chlorpromazine (CPZ) on renal function and lipid peroxidation in a rat model of kidney ischemia/reperfusion injury. METHODS: Forty eight Wistar rats underwent a laparotomy for hilar clamping of left kidney with a bulldog clamp for 60 minutes followed by organ reperfusion and contralateral nephrectomy. Of these, 26 received 3mg/kg of CPZ intravenously 15 minutes before renal ischemia (G-E) while the remaining 22 were used as ischemic control group (G-C). Eleven rats of G-E and 8 of G-C were followed for blood urea nitrogen and creatinine determinations before renal ischemia and at 1st, 4th and 7th postoperative days. Samplings of left renal tissue were obtained at 5 minutes (5 rats from each group) and 24 hours (9 G-C and 10 of G-E) of reperfusion for malondialdehy (MDA) content determination. Controls of renal MDA content were determined in kidneys harvested from 6 additional normal rats. RESULTS: Acute renal failure occurred in all animals but levels of BUN and creatinine were significantly lower in G-E (p<0.001). MDA content rose strikingly at 5 minutes of reperfusion in both groups (p>0.05) and returned near to normal levels 24 hours later. CONCLUSION: CPZ conferred partial protection of renal function to kidneys submitted to ischemia/reperfusion injury that seems to be not dependent on inhibition of lipid peroxidation.

OBJETIVO: avaliar a influência da clorpromazina (CPZ) na função renal e na peroxidação lipídica num modelo de lesão de isquemia/reperfusão renal em ratos. MÉTODOS: 48 ratos Wistar foram submetidos à laparotomia para clampamento da artéria renal esquerda durante 60 minutos, seguido da reperfusão e nefrectomia contralateral. Destes animais, 26 receberam 3 mg/kg de CPZ intravenosa 15 minutos antes da isquemia renal (G-E), sendo os 22 animais restantes utilizados como grupo controle isquêmico (G-C). Em 11 ratos do G-E e 8 do G-C foi feita a dosagem de uréia e creatinina sérica antes da isquemia renal e no 1º, 4º e 7º dia pós-operatório. Amostras de tecido do rim esquerdo foram obtidas aos 5 minutos (5 ratos de cada grupo) e 24 horas após reperfusão (9 G-C e 10 G-E) para dosagem de malondialdeído (MDA). Valores controle para níveis de MDA foram obtidos em rins retirados de 6 ratos normais. RESULTADOS: insuficiência renal aguda ocorreu em todos os animais mas os níveis séricos de uréia e creatinina foram significativamente menores no G-E (p<0,001). Os níveis de MDA apresentaram elevação acentuada na avaliação aos 5 minutos de reperfusão em ambos os grupos (p<0,05), retornando a valores próximos aos normais na avaliação com 24 horas. CONCLUSÃO: a CPZ conferiu proteção parcial da função renal aos rins submetidos à lesão de isquemia e reperfusão, aparentemente independente da inibição da peroxidação lipídica.

Long term evaluation of functional and morphological bladder alterations on alloxan-induced diabetes and aging: experimental study in rats / Avaliação funcional e morfológica tardia de alterações na bexiga secundárias ao diabetes induzido por aloxano e no envelhecimento: estudo experimental em ratos

PURPOSE: to evaluate structural and functional effects of Alloxan- induced diabetes and aging on bladder of rats. METHODS: evaluations were performed in three groups: A - 8 weeks of age, B - 44 weeks of age, C - 44 weeks of age with alloxan-induced diabetes. Muscle layer thickness, extracellular matrix fibrosis and collagen were quantified on digital images of bladder samples. Cystometric evaluations before surgical vesical denervation (SVD), included maximum cystometric capacity (MCC), maximum bladder pressure (MBP), bladder contraction frequency (VCF), duration of bladder contraction (DC), threshold pressure (TP) and bladder compliance (BC). After SVD, maximum cystometric capacity (MCC), BC and maximum urethral closing pressure (MUCP) were also measured. RESULTS: Reduced extracellular matrix fibrosis concentration and contraction strength were found in the bladders of group C. Before SVD, bladder compliance was not different between groups. Alterations were observed in MCC after SVD. CONCLUSIONS: We did not notice smooth muscle hypertrophy in Alloxan-induced diabetic rats after 44 weeks. There was alteration in the total and relative amount of fibrosis and collagen. The cystometric studies support the idea that this morphological alterations are important to determine the different bladder functional patterns found in the aging and the Alloxan-induced diabetic animals.

OBJETIVOS: avaliar alterações estruturais e funcionais da bexiga de ratos machos, associadas ao diabetes induzido por aloxano e ao envelhecimento. MÉTODOS: três grupos de animais: A - 8 semanas de idade; B- 44 semanas de idade; C - 44 semanas de idade com diabetes induzido por aloxano, foram avaliados. Realizadas medidas de espessura da camada muscular, fibrose de matriz extracelular e quantidade de colágeno, através de análise de imagem digital dos tecidos. Realizados também testes cistométricos, antes da desnervação vesical cirúrgica (DVC), para avaliar capacidade vesical (CV), intensidade máxima de contração vesical (IMCV) e complacência vesical. Após a DVC, foram avaliadas capacidade vesical após a desnervação (CVAD), complacência vesical (CV) e pressão de perda uretral (PPU). RESULTADOS: não foi observada hipertrofia da camada muscular nas bexigas; houve diminuição da concentração de fibrose da matriz extracelular e diminuição da força contrátil, e aumento da capacidade vesical no grupo C. CONCLUSÕES: a atrofia da camadas muscular da bexiga esta relacionada ao diabetes induzido por aloxano. O envelhecimento, como fenômeno isolado, provoca alterações nos parâmetros funcionais, porém associado ao diabetes, gera alterações na IMCV, CV e CVAD. Existe correlação entre alterações estruturais e funcionais nos animais diabéticos após a desnervação.

Comparison of two experimental models of urodynamic evaluation in female rats / Comparação de dois modelos experimentais para avaliação urodinâmica em ratas

PURPOSE: Urodynamic studies in small animals can be performed through urethral sounding or cystostomy. OBJECTIVE: To compare the two methods of urodynamic evaluation in female rats. METHODS: Ten female rats weighing on average 250g, under anesthesia with urethane (1,25 mg/kg) were submitted in three repeats to an urethal catheter of 0,64 mm in external diameter for cystometric measurements of vesicle pressure(VP1) and contraction time (CT1). The catheter was extracted at a constant velocity of 0.05 cm/minute until complete exteriorization and determinations of maximal urethral pressure (UP1) and functional urethral length (FUL1). This was followed by a cystostomy with catheter PE50 and a new determination of the vesical pressure (VP2). After bladder denervation, a new cystometric record indirectly infered the maximum urethral closure pressure (UP2). The peak urethal pressure (UP3) and the functional urethral length (FUL2) were determined in another urethral sounding. The pressure registration system consisted of a continuous infusion pump regulated to a flow of 0.1 ml/minute connected both to the cystostomy catheter (PE-50) or the urethal catheter (0.64mm) and the polygraph Narco-Biosystem. Statistical analysis employed the Wilcoxon non-parametric test RESULTS: Mean VP1= 48,2 mmHg (11,8 SD); Mean VP2 = 38,2 mmHg (9,0 SD) "p" (VP1 X VP2) = 0,0039. Mean CT1=30,2 s (21,5 SD); Mean CT2=20,0 s(7 SD) p (CT1 X CT2) = 1,28. Mean UP1 = 47,2 mmHg (6,5 SD); Mean UP2 = 21,3 mmHg (6,6 SD), mean UP3 = 40,7 mmHg(13,3 SD) p (UP1 X UP2) = 0,002; "p" (UP1 X UP3) = 0,084; p (UP2 X UP3) = 0,002. Mean FUL1=14,2 mm (1,9 SD); Mean FUL2= 14,1mm (1,9 SD); p (FUL1 X FUL2) = 0,64. CONCLUSIONS: The methods employed to evaluate vesical and urethral pressures are different. The presence of the urethral catheter may be an obstructive factor. Surgical denervation up to the bladder neck level does not compromise urethral function.

INTRODUÇÃO: O estudo urodinâmico em ratas pode ser realizado através de sondagem vesical por via uretral ou por cistostomia. O objetivo deste estudo foi comparar estes dois métodos. MÉTODOS: Foram utilizadas 10 ratas da raça Wistar, peso médio de 250 gramas, anestesiadas com uretana (1,25 mg/kg). Inicialmente foi realizado estudo por sonda uretral (0,64 mm de diâmetro externo) para determinação da pressão vesical (PV1) e tempo de contração (TC1), após isto a sonda foi tracionada a velocidade constante (0,05 cm/m) até sua exteriorização pelo meato uretral, avaliando-se a pressão uretral máxima (PU1) e o comprimento funcional uretral (CFU1). Fez-se, então, a cistostomia (sonda PE50) para determinação da pressão vesical (PV2). A seguir, realizou-se desnervação cirúrgica da bexiga e realizou-se novo registro cistométrico para se inferir a pressão uretral indireta (PU2). Logo após, foi passada sonda uretral para determinação da pressão uretral máxima (PU3) e do comprimento funcional uretral (CFU2). O sistema de registro das pressões foi constituído de uma bomba de infusão contínua regulada para 0,1 ml/minuto conectada em Y com o cateter de cistostomia (PE-50) ou cateter uretral (0,64mm) a um polígrafo Narco-Bioystem. A análise estatística foi realizada através do método não paramétrico de Wilcoxon. RESULTADOS: Média PV1= 48,2 mmHg (11,8 SD); Média PV2 = 38,2 mmHg (9,0 SD). "p" (PV1 X PV2) = 0,0039. Média TC1=30,2 s (21,5 SD); Média TC2=20,0 (7 SD) p (TC1 X TC2) = 1,28. Média PU1 = 47,2 (6,5 SD); Média PU2 = 21,3 mmHg (6,6 SD), média PU3 = 40,7(13,3 SD) p (PU1 X PU2) = 0,002; "p" (PU1 X PU3) = 0,084; p (PU2 X PU3) = 0,002. Média CFU1=14,2 (1,9 SD); Média CFU2= 14,1 (1,9 SD); p (CFU1 X CFU2) = 0,64. CONCLUSÃO: Os métodos de avaliação urodinâmica são diferentes. A presença do cateter na uretra pode ser um fator obstrutivo. A desnervação cirúrgica, até o nível do colo vesical, não compromete a função uretral.

Is CO2 gas unsufflator necessary for laparoscopic training in animals?

Objective - To verify the efficacy and safety of compressed air to produce pneumoperitoneum for laparoscopic surgery in pigs for a training program of residence. Methods - Dalland pigs weighing 15-17kg underwent general anethesia and mechanical ventilation. They were divided in 3 groups: A - (38) the pneumoperitnoneum was established with an automatic COZ insufflator, B - (7) as in A except the C02 gas was changed by compressed air, and C - (11) abdomen insufflation was obtained with compressed air directly from hospital pipe network system. Intra-abdominal pressure in all groups was kept between 12 and 15 mmHg. The laparoscopic procedures performed were distributed proportionally among groups: 20 bilateral nephrectomy, 20 dismembered pyeloplasty and 16 partial nephrectomy. Arterial blood sampling for gasometry was obtained before and 2h after establishment of pneumoperitoneum in 5 pigs of group C. Results - The cost of 25 4,5kg COZ container used in group A was R$ 3,150.00 (U$ 1,050.00). The mean length time of surgeries in groups A, B and C were respectively: 181±30rnin, 196±39min e 210±47min (p>0.05). Respiratory alkalosis occurred in 3 out of 5 pigs of group C. No animal exhibited signs of gas embolism or died during surgery. Conclusion - The use of compressed air for laparoscopy in pigs was safe, reduced costs and did not require the use of an automatic gas insufflator.

Ação do citrato de sildenafil sobre a função uretral de ratas com desnervação vesical / Effect of sildenafil citrate in the urethral function in rats with denervated bladder

O óxido nítrico atua como neurotransmissor não adrenérgico e não colinérgico na bexiga e na uretra. Sua forma de ação se faz pela ativação da guanilatociclase responsável pela transformação de GMP em GMPc que promove o relaxamento da fibra muscular lisa. O citrato de sildenafil causa aumento do GMPc, através da inibição de fosfodiesterases, que hidrolisam o GMPc. Assim, o objetivo do experimento foi verificar sua ação na uretra. MÉTODOS: Estudou-se 6 ratas com peso aproximado de 200g. A anestesia foi com uretana na dose de 1,25 mg/kg. As cistometrias, em número de 3, foram realizadas através de cistostomia com cateter P50. A primeira logo após a cistostomia; a segunda depois da desnervação cirúrgica da bexiga e a terceira uma hora após a infusão gástrica do citrato de sildenafil. O sistema de registro das pressões constou de uma bomba de infusão contínua regulada para 0,3ml/minuto conectada em Y com o cateter P50 e a um polígrafo Narco-Bioystem. Nas cistometrias avaliou-se as pressões vesicais máxima e mínima nos momentos: normais-(I); desnervadas (II) e desnervadas com citrato de sildenafil na dose de 1 mg/kg (III). A análise estatística foi feita pelo método de Wilcoxon. RESULTADOS: As médias das pressões máximas (pma) foram: momentos I (x=86,6 - SD=10,1) ; momentos II (x=42,6 - SD=15,0) e momentos III (x=30,8 - SD=12,4). As médias das pressões mínimas (pmi) foram: momentos I (x=72,1 - SD=18,9); momentos II (x=31,1 - SD=9,8); momentos III ( x=14,5 - SD=9,5). A análise estatística entre as pma e pmi no mesmo grupo mostrou p< 0,01 para o grupo III, sendo maior que 0,05 para os demais. A comparação das pma revelou p< 0,002 entre os momentos I-II e I-III, sendo maior que 0,05 entre os momentos II e III. A comparação das pmi mostrou p< 0,004 entre os momentos I-II; p< 0,002 entre os momentos I -III e p <0,01 entre os momentos II-III, havendo portanto nível de significância entre os 3 momentos. CONCLUSÕES: 1) A desnervação vesical promove queda nas pressões uretrais máxima e mínima; 2) O Citrato de sildenafil amplia a faixa pressórica de trabalho da uretra devido a diminuição da pressão mínima; 3) O citrato de sildenafil não altera a pressão uretral máxima depois da desnervação.

Community acquired urinary tract infection: etiology and bacterial susceptibility

Purpose: Urinary tract infections (UTI) are one of the,most common infectious diseases diagnosed. UTI account for a large proportion of antibacterial drug consumption and have large socio-economic impacts. Since the majority of the treatments begins or is done completely empirically, the knowledge of the organisms, their epidemiological characteristics and their antibacterial susceptibility that may vary with time is mandatory. Objetive: The aim of this study was to report the prevalence of uropathogens and their antibiotic susceptibility of the community acquired UTI diagnosed in our institution and to provide a national data. Methods: We analyzed retrospectively the results of urine cultures of 402 patients that had community acquired urinary tract infection in the year of 2003. Results: The mean age of the patients in this study was 45.34 t 23.56 (SD) years. There were 242 (60.2 percent) females and 160 (39.8 percent) males. The most conunonly isolated organism was Escherichia coli (58 percent). Klebsiella sp. (8.4 percent).and Enterococcus sp.(7.9 percent) were reported as the next most common organisms. Of all bacteria isolated from community acquired UTI, only 37 percent were sensitive to ampicillin, 51 percent to cefalothin and 52 percent to trimethoprim/sulfamethoxazole. The highest levels of susceptibility were to imipenem (96 percent), ceftriaxone (90 percent), amikacin (90 percent), gentamicin (88 percent), levofloxacin (86 percent), ciprofloxacin (73 percent), nitrofurantoin (77 percent) and norfloxacin (75 percent). Conclusions: Gram-negative agents are the most common cause of UTI. Fluoroquinolones remains the choice among the orally administered antibiotics, followed by nitrofurantoin, second and third generation cephalosporins. For severe disease that require parenteral antibiotics the choice should be aminoglycosides, third generation cephalosporins, fluoroquinolones or imipenem, which were the most effective.

Prevalence and bacterial susceptibility of hospital acquired urinary tract infection

Purpose: Urinary tract infection is the most common nosocomially acquired infection. It is important to know the etiology and antibiotic susceptibility infectious agents to guide the initial empirical treatment. Objective: To determine the prevalence of bacterial strains and their antibiotic susceptibility in nosocomially ácquired urinary tract infection in a university hospital between January and June 2003. Methods: We analyzed the data of 188 patients with positive urine culture (= 105 colony-forming unitslmL) following a period of 48 hours after admission. Results: Half of patients were male. Mean age was 50.26 ± 22.7 (SD), range 3 months to 88 years. Gram-negative bacteria were the agent in approximately 80 percent of cases. The most common pathogens were E. coli (26 percent), Klebsiella sp. (15 percent), P. aeruginosa (15 percent) and Enterococcus sp. (11 percent). The overall bacteria susceptibility showed that the pathogens were more sensible to imipenem (83 percent), second or third generation cephalosporin and aminoglycosides; and were highly resistant to ampicillin (27 percent) and cefalothin (30 percetn). It is important to note the low susceptibility to ciprofloxacin (42 percent) and norfloxacin (43 percent). Conclusion: This study suggests that if one can not wait the results of urine culture, the best choices to begin empiric treatment are imipenem, second or third generation cephalosporin and aminoglycosides. Cefalothin and ampicillin are quite ineffective to treat these infections.

Adrenalectomia laparoscópica: análise de 11 pacientes / Laparoscopic adrenalectomy: analysis of 11 pacients

OBJETIVO: Analisar a experiência inicial da Divisão de Urologia do HCFMRP-USP na adrenalectomia transperitoneal videolaparoscópica. MÉTODOS: Análise retrospectiva de 11 casos de adrenalectomia transperitoneal laparoscópica realizados de fevereiro de 1999 a março de 2003 sendo 3 em homens( 27 por cento) e 8 em mulheres (73 por cento), idade média de 40,2 ± 13,1 anos. Os pacientes apresentavam os diagnósticos seguintes: adenoma - 5, síndrome de Cushing - 3, feocromocitoma - 1, hiperaldestorismo - 1 e síndrome de Carney - 1. RESULTADOS: A cirurgia foi bilateral em 05 pacientes (45,4 por cento) e unilateral em 06 pacientes (54,6 por cento), destes 04 à direita (36,4 por cento) e 02 à esquerda (18,2 por cento). O tempo médio de internação foi de 3,6 ± 1,1 dias, o tempo médio de cirurgia foi de 220,5 ± 103,7 minutos e a taxa de conversão foi de 18,2 por cento. CONCLUSAO: Os resultados apresentados são similares aos relatados pela literatura, demonstrando que a adrenalectomia videolaparoscópia pode ser realizada de maneira segura e eficiente com benefícios: tempo cirúrgico aceitável, rápida recuperação pós-operatória e alta precoce.