The nurse explains to a client who is receiving oxybutynin (Ditropan) for control of urinary incontinence that the drug's effect is
a. decreasing bladder contractility.
b. increasing serotonin in the CNS, leading to bladder wall relaxation.
c. promoting relaxation of the bladder outlet.
d. reducing intra-abdominal pressure.
B
Oxybutynin works by increasing the volume in the bladder that can be tolerated before an invo-luntary bladder contraction occurs, by decreasing the strength of the involuntary bladder contrac-tion, and by increasing the total bladder capacity. Tricyclic antidepressants are sometimes pre-scribed for overactive bladder and interstitial cystitis. They are the drugs that increase synaptic serotonin levels in the CNS, resulting in bladder wall relaxation.
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