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Differential diagnosis and treatment of impaired bladder emptying.

Although much attention is paid to urinary incontinence, the condition of incomplete bladder emptying is becoming more common with the aging of the US population and the widespread use of anticholinergic drugs to treat overactive bladder. This disorder can often be silent until end-stage presentation of overflow incontinence. In this article, we review the pathophysiologic conditions of the bladder and urethra that can cause impaired bladder emptying and discuss how to evaluate and screen the patient with a bladder that does not empty. In addition, we provide an overview of treatment options available for impaired bladder emptying and consider the research that is under way to find the best therapies for the failing bladder.