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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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
uninhibitable bladder contractions that typically occur at bladder volumes below capacity.
Farlex Partner Medical Dictionary © Farlex 2012
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
Medical Dictionary, © 2009 Farlex and Partners
detrusor instabilityInvoluntary contractions of the bladder muscle causing an undesired escape of urine. This is one of the most important causes of incontinence, being, in women, second only to incompetence of the urethral sphincter. The condition is often associated with excessive thickness of the muscular bladder wall.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005