Bladder wall tension during physiological voiding and in patients with an unstable detrusor or bladder outlet obstruction

@article{citeulike:1526351, abstract = {OBJECTIVE To develop and evaluate a new clinical method for measuring bladder wall tension (BWT) on detrusor contraction during physiological voiding and under pathological conditions, as in experimental trials during subvesical obstruction the ability to generate pressure increases, whereas the contractile force per cross-sectional area of detrusor muscle decreases. PATIENTS AND METHODS In all, 24 patients were divided into three equal groups: group 1 (mean age 58, sd 8.6 years) comprised men with bladder outlet obstruction in accordance with the Abrams-Griffiths nomogram; group 2 (four men and four women, 56, sd 7.2 years) had detrusor instability; and group 3 (54, sd 9.6 years) had normal bladder emptying. BWT, as the detrusor force per cross-sectional area of bladder tissue (in N/cm2), was calculated after a urodynamic evaluation and ultrasonographic estimate of bladder wall thickness. RESULTS In all patients it was possible to measure BWT; the mean (sd) maximum BWT in group 1 was 9.8 (3.9) N/cm2, in group 2 during bladder instability was 11.7 (2.6) N/cm2 and in group 3 was 2.8 (0.5) N/cm2. CONCLUSIONS Estimating BWT in humans is possible by combining a urodynamic evaluation with an ultrasonographic estimate of bladder wall thickness. Further clinical research should elucidate the clinical relevance of BWT under comparable conditions.}, author = {Bross, S. and Braun, P. M. and Michel, M. S. and Juenemann, K. P. and Alken, P. }, citeulike-article-id = {1526351}, doi = {http://dx.doi.org/10.1046/j.1464-410X.2003.04420.x}, journal = {BJU International}, keywords = {bladder\_neck\_obstruction, etiology, fulltxt}, number = {6}, pages = {584--588}, posted-at = {2007-08-01 06:13:05}, priority = {4}, title = {Bladder wall tension during physiological voiding and in patients with an unstable detrusor or bladder outlet obstruction}, url = {http://dx.doi.org/10.1046/j.1464-410X.2003.04420.x}, volume = {92}, year = {2003} }

TY - JOUR ID - citeulike:1526351 L3 - citeulike-article-id:1526351 TI - Bladder wall tension during physiological voiding and in patients with an unstable detrusor or bladder outlet obstruction JF - BJU International VL - 92 IS - 6 SP - 584 EP - 588 N2 - OBJECTIVE To develop and evaluate a new clinical method for measuring bladder wall tension (BWT) on detrusor contraction during physiological voiding and under pathological conditions, as in experimental trials during subvesical obstruction the ability to generate pressure increases, whereas the contractile force per cross-sectional area of detrusor muscle decreases. PATIENTS AND METHODS In all, 24 patients were divided into three equal groups: group 1 (mean age 58, sd 8.6 years) comprised men with bladder outlet obstruction in accordance with the Abrams-Griffiths nomogram; group 2 (four men and four women, 56, sd 7.2 years) had detrusor instability; and group 3 (54, sd 9.6 years) had normal bladder emptying. BWT, as the detrusor force per cross-sectional area of bladder tissue (in N/cm2), was calculated after a urodynamic evaluation and ultrasonographic estimate of bladder wall thickness. RESULTS In all patients it was possible to measure BWT; the mean (sd) maximum BWT in group 1 was 9.8 (3.9) N/cm2, in group 2 during bladder instability was 11.7 (2.6) N/cm2 and in group 3 was 2.8 (0.5) N/cm2. CONCLUSIONS Estimating BWT in humans is possible by combining a urodynamic evaluation with an ultrasonographic estimate of bladder wall thickness. Further clinical research should elucidate the clinical relevance of BWT under comparable conditions. KW - bladder_neck_obstruction KW - etiology KW - fulltxt AU - Bross, S AU - Braun, PM AU - Michel, MS AU - Juenemann, KP AU - Alken, P PY - 2003/// UR - http://dx.doi.org/10.1046/j.1464-410X.2003.04420.x ER -