Bladder Filling and Storage: “(Coarse) Sensation”
Adequate bladder sensation is important for normal bladder function. Normal bladder function is evaluated at three points during fill cystometry: (1) First sensation of filling, (2) First desire to void, (3) Strong desire to void. Studies in normal subjects show that volumes at which each sensation occurs at a fairly constant percentage of total bladder volume. First sensation of bladder filling occurs at an average of 40 % of maximal cystometric capacity while strong desire to void occurs at an average 70 % of maximal cystometric capacity. However, due to the variability in the way clinicians elicit information regarding bladder sensation and how patients interpret these questions, results can be difficult to reproduce across laboratories and among patients. Classic examples of sensory disorders include increased sensation with bladder pain syndrome and decreased sensation with neurogenic bladder disorders associated with peripheral neuropathies. Idiopathic overactive bladder represents a complex heterogeneous population in terms of disorders of bladder sensation.
KeywordsLower Urinary Tract Symptom Detrusor Overactivity Interstitial Cystitis Urodynamic Study International Continence Society
- 3.Nitti VW. Urodynamic and video-urodynamic evaluation of the lower urinary tract. In: Wein AJ, Kavoussi LR, Novick AC, Partin AW, Peters CA, editors. Campbell-Walsh urology. 10th ed. Philadelphia: Elsevier Saunders; 2011. p. 1847.Google Scholar
- 29.Wein AJ, Dmochowski RR. Neuromuscular dysfunction of the lower urinary tract. In: Campbell MF, Kavoussi LR, Novick AC, Partin AW, Peters CA, Walsh PC, et al., editors. MD consult 2012. Campbell-Walsh urology. 10th ed. Philadelphia: Elsevier Saunders; 2012. p. 1909–46.Google Scholar