These and other outcomes for effectiveness of BTX-A at different dosages in two observation periods indicate that a dose greater than 50 U is significantly more effective for certain symptoms of OAB compared with placebo .
However , there were no significant differences between some dosages .
Compared with placebo , the outcomes of total adverse events for NDO and for IDO show that doses of 300 U and 200 U for NDO are associated with more complications .
Conclusions In consideration that the treatments of BTX-A were with minimal , local , and manageable adverse effects , this meta- analysis demonstrates that BTX-A 200 U is recommended for management of NDO for short-term treatment for there was no significant difference from the larger dose of 300U .
Purpose To assess the effectiveness and safety of botulinum toxin A ( BTX-A ) at different dosages for overactive bladder ( OAB ) .
OnabotulinumtoxinA 100U provides significant improvements in overactive bladder symptoms in patients with urinary incontinence regardless of the number of anticholinergic therapies used or reason for inadequate management of overactive bladder
Introduction A prespecified pooled analysis of two placebo-controlled , phase 3 trials evaluated whether the number of prior anticholinergics used or reason for their discontinuation affected the treatment response to onabotulinumtoxinA 100U in overactive bladder ( OAB ) patients with urinary incontinence ( UI ) . Methods Patients with symptoms of OAB received intradetrusor injections of onabotulinumtoxinA 100U or placebo , sparing the trigone . Change from baseline at week 12 in UI episodes/day , proportion of patients reporting a positive response ( ‘ greatly improved ’ or ‘ improved ’ ) on the treatment benefit scale ( TBS ) , micturition and urgency were evaluated by number of prior anticholinergics ( 1 , 2 or ≥ 3 ) and reason for their discontinuation ( insufficient efficacy or side effects ) . Adverse events ( AE ) were assessed . Results Patients had taken an average of 2.4 anticholinergics before study enrolment . OnabotulinumtoxinA reduced UI episodes/day from baseline vs. placebo , regardless of the number of prior anticholinergics ( −2.82 vs. −1.52 for one prior anticholinergic ; −2.58 vs. −0.58 for two prior anticholinergics ; and −2.92 vs. −0.73 for three or more prior anticholinergics ; all p < 0.001 ) . The proportion of TBS responders was higher with onabotulinumtoxinA vs. placebo ( 69.0 % vs. 37.2 % for one prior anticholinergic ; 58.8 % vs. 24.8 % for two prior anticholinergics and 56.4 % vs. 22.5 % for three or more prior anticholinergics ; all p < 0.001 ) . Similar results were observed regardless of the reason for discontinuation . OnabotulinumtoxinA reduced the episodes of urgency and frequency of micturition vs. placebo in all groups . AEs were well tolerated , with a comparable incidence in all groups . Conclusion In patients with symptoms of OAB who were inadequately managed by one or more anticholinergics , onabotulinumtoxinA 100U provided significant and similar treatment benefit and safety profile regardless of the number of prior anticholinergics used or reason for inadequate management of OAB . Clinical Trials.gov : NCT00910845 , NCT00910520
These and other outcomes for effectiveness of BTX-A at different dosages in two observation periods indicate that a dose greater than 50 U is significantly more effective for certain symptoms of OAB compared with placebo .
However , there were no significant differences between some dosages .
Compared with placebo , the outcomes of total adverse events for NDO and for IDO show that doses of 300 U and 200 U for NDO are associated with more complications .
Conclusions In consideration that the treatments of BTX-A were with minimal , local , and manageable adverse effects , this meta- analysis demonstrates that BTX-A 200 U is recommended for management of NDO for short-term treatment for there was no significant difference from the larger dose of 300U .
Purpose To assess the effectiveness and safety of botulinum toxin A ( BTX-A ) at different dosages for overactive bladder ( OAB ) .