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Overactive bladder
Urinary incontinence is an embarrassing and
frustrating problem that affects many people, more
commonly the elderly.
When urine is produced in the kidneys, it is
stored in the bladder for controlled discharge.
The slight need to urinate is sensed when urine
volume reaches about one-half of the bladder's
capacity. The brain suppresses this need until a
person initiates urination.
Once urination has been initiated, the nervous
system signals the detrusor muscle to contract
into a funnel shape and expel the urine.
Overactive Bladder
In overactive bladder - the layered, smooth muscle
that surrounds the bladder (detrusor muscle)
contracts spastically, sometimes without a known
cause, and results in sustained, high bladder
pressure and the urgent need to urinate (called
urgency).
Aniticholinergic Action
Drugs called Anticholinergics are administered for
the treatment of overactive bladder.
These drugs affect the nerve endings of the
bladder and relax the bladder muscle, thereby
reducing accidents. |
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