Evaluación de parámetros urodinámicos tras colocación de cintas libres de tensión / Evaluation of urodynamic parameters following the placement of tension-free tape

Objetivo: Analizar los cambios urodinámicos posteriores a la colocación de cintas libres de tensión TVT (cabestrillo vaginal libre de tensión retropúbico) o TVT-O (cabestrillo vaginal libre de tensión obturador). Material y métodos: Se realizó una cohorte retrospectiva en la que se incluyeron mujeres con diagnóstico urodinámico de incontinencia de esfuerzo, a las que se les colocó cinta libre de tensión tipo TVT o TVT-O, y que se les realizó estudio urodinámico pasado un año. El tamaño de la muestra se calculó en función del área de continencia y fue de 15 mujeres por cada grupo. Se incluyeron 40 mujeres, a 22 se les realizó TVT y a 18 TVT-O. El estudio se llevó a cabo entre febrero de 1999 y marzo de 2009. Se analizaron las medias de los parámetros urodinámicos pre y posoperatorios con prueba «t» para variables dependientes. Resultados: Se encontró una disminución media del flujo máximo de 9 ml/s posterior a la colocación de TVT-O (p = 0,05). Para el grupo de TVT se encontró un aumento en los tiempos de flujo y de micción de 5,3 y 6 segundos, así como de la presión del detrusor al flujo máximo en6,2 cm H2O y de la presión máxima del detrusor al vaciamiento en 8 cm H2O (p = 0,37, 0,47, 0,21y 0,12, respectivamente).Conclusiones: En mujeres con incontinencia urodinámica de esfuerzo existe disminución del flujo máximo al año de la colocación de TVT-O (AU)

Objective: To analyse the urodynamic changes subsequent to the placement of TVT tension-free tape (retropubic tension-free vaginal tape) or TVT-O (obturator tension-free vaginal tape). Materials and methods: We carried out a retrospective cohort study that included women with urodynamic diagnosis of stress incontinence, in whom we placed type TVT or TVT-O tension-free tape, and on whom we performed a urodynamic study one year later. We calculated the size of the sample based on the area of continence and it consisted of 15 women per group. We included 40 women. 22 had TVT placed and 18 had TVT-O. We carried out the trial between February 1999 and March 2009. We analysed the means of the pre and postoperative urodynamic parameters using the Student’s t-test for dependent variables. Results: We noted an average decrease in the maximum flow of 9 ml/ s following the placement of the TVT-O (p = 0.05). For the TVT group, we noted an increase in the flow and micturition times of 5.3 and 6 seconds, as well as in the detrusor pressure at the maximum flow of 6.2 cmH2O and of the maximum detrusor pressure when voiding, of 8 cm H2O (p = 0.37, 0.47, 0.21 and0.12, respectively). Conclusions: In women with urodynamic stress incontinence, the maximum flow decreased a year after the TVT-O was placed (AU)

[Evaluation of urodynamic parameters following the placement of tension-free tape]. / Evaluación de parámetros urodinámicos tras colocación de cintas libres de tensión.

OBJECTIVE: To analyse the urodynamic changes subsequent to the placement of TVT tension-free tape (retropubic tension-free vaginal tape) or TVT-O (obturator tension-free vaginal tape). MATERIALS AND METHODS: We carried out a retrospective cohort study that included women with urodynamic diagnosis of stress incontinence, in whom we placed type TVT or TVT-O tension-free tape, and on whom we performed a urodynamic study one year later. We calculated the size of the sample based on the area of continence and it consisted of 15 women per group. We included 40 women. 22 had TVT placed and 18 had TVT-O. We carried out the trial between February 1999 and March 2009. We analysed the means of the pre and postoperative urodynamic parameters using the Student's t-test for dependent variables. RESULTS: We noted an average decrease in the maximum flow of 9 ml/s following the placement of the TVT-O (p=0.05). For the TVT group, we noted an increase in the flow and micturition times of 5.3 and 6 seconds, as well as in the detrusor pressure at the maximum flow of 6.2 cm H(2)O and of the maximum detrusor pressure when voiding, of 8 cm H(2)O (p=0.37, 0.47, 0.21 and 0.12, respectively). CONCLUSIONS: In women with urodynamic stress incontinence, the maximum flow decreased a year after the TVT-O was placed.