ABSTRACT
56 children... Urodynamic parameters in terms of cystometric bladder capacity and detrusor leak point pressure substantially improved 6 months after untethering surgery (125 vs 170 ml and 69.1 vs 47.5 cm H2O, respectively, p < 0.05). Assessment of urodynamic findings in 19 children at 1 year failed to demonstrate a significant change in these parameters.
CONCLUSIONS:
Our study shows that secondary untethering surgery may significantly improve urological outcome.

MATERIALS AND METHODS
... In 19 children a further comparison of urodynamic parameters at 6 and 12 months postoperatively was performed. Statistical analysis was performed using the paired t test, where a value of p<0.05 was considered statistically significant.

RESULTS
... A further comparison of urodynamic parameters at 6 and 12 months in 19 children in whom the data were available revealed that the urodynamic improvement was persisting at 1 year with regard to cystometric capacity (166.5 vs 165.5 ml, p<0.05, paired t test) and DLPP (41.8 vs 40.6 cm H2O, p<0.05, paired t test).