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Related to detrusor instability: neurogenic bladder
lack of constancy; excessive likelihood of change.
detrusor instability the occurrence during bladder filling of contractions that compromise capacity or produce urinary leakage.
uninhibitable bladder contractions that typically occur at bladder volumes below capacity.
A physiological mechanism in which contractions of the muscles of the urinary bladder during the filling phase of a urodynamic study or during coughing, sneezing, or other activities result in an increase of intra-abdominal pressures. Such a pressure increase may lead to urinary urges or to urinary incontinence, esp. in women. Some experts believe that detrusor instability is the most common cause of urinary incontinence in older adults. Underlying causes include urethral obstruction, cystitis, bladder carcinoma, stroke, Parkinson's disease, and multiple sclerosis. Synonym: detrusor hyperactivity with impaired contractility; detrusor overactivity;
See also: instability