Overactive bladder

What is Overactive Bladder?
Overactive bladder (OAB) is a condition characterized by a sudden, uncomfortable need to urinate with or without urine leakage usually with daytime and nighttime frequency.
OAB occurs when smooth muscle of the detrusor muscle of the bladder squeezes or contracts more often than normal and at inappropriate times. Instead of staying at rest as urine fills the bladder, the detrusor contracts while the bladder is filling with urine.

Treatment for OAB includes lifestyle modification (fluid restriction, avoidance of caffeine), bladder retraining, antimuscarinic drugs (darifenacin, hyoscyamine, oxybutynin, tolterodine, solifenacin, trospium), and various devices (Urgent PC Neuromodulation System, InterStim). Intravesical botulinum toxin A is also used in some intractable cases, although not with formal FDA approval. The antimuscarinic fesoterodine was recommended for approval by the European Medicines Agency in February 2007, and will become available for use during 2008.

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