Bladder Filling and Storage: “Capacity”
The goal of measuring bladder capacity is to estimate the volume of urine a patient typically stores before experiencing a desire to void. This measure gives the clinician an idea of whether urinary symptoms are due to diminished bladder capacity, increased fluid intake, or other causes. This information assists the clinician with selecting treatment and management strategies for the patient. Bladder capacity can be assessed in several different ways. Reliability of these measures depends on sound urodynamics technique and consistent patient instruction during testing. Interpreting measures of bladder capacity obtained during urodynamic testing is an important skill that involves understanding the limitations of these measures as well as common artifacts of the study. Several examples of interpretation for a variety of bladder conditions that impact cystometric capacity, cystometrogram tracings, and videofluoroscopic imaging of the bladder are discussed in this chapter.
KeywordsDetrusor Overactivity Interstitial Cystitis Bladder Capacity Detrusor Pressure Bladder Filling
- 1.Haylen BT, de Ridder D, Freeman RM, Swift SE, Berghmans B, Lee J, Monga A, Petri E, Rizk DE, Sand PK, Schaer GN. An International Urogynecological Association (IUGA)/International Continence Society (ICS) joint report on the terminology for female pelvic floor dysfunction. Int Urogynecol J. 2009;21(1):5–26.PubMedCrossRefGoogle Scholar
- 6.Bael AM, Lax H, Hirche H, Hjälmš K, Tamminen-Möbius T, Van Hoeck KM, van Gool JD. Reference ranges for cystographic bladder capacity in children—with special attention to vesicoureteral reflux. J Urol. 2006;176(4 Pt 1):1596–600. On behalf of the International Reflux Study in Children.PubMedCrossRefGoogle Scholar
- 9.Abrams P. Urodynamic technique. In: Abrams P, editor. Urodynamics. 3rd ed. London: Springer; 2006. p. 17–116.Google Scholar
- 14.Jensen JK. Urodynamic evaluation. In: Ostergard DR, Bent AE, editors. Urogynecology and urodynamics. 4th ed. Baltimore: Williams and Wilkins; 1991. p. 116–21.Google Scholar
- 17.Abrams PH, Cardozo L, Fall M, Griffiths D, Rosier P, Ulmsten U, Van Kerrebroeck PEV, Wein AJ. The standardisation of terminology of lower urinary tract function: report from the Standardisation Sub-committee of the International Continence Society. Neurourol Urodyn. 2002;21:167–78.PubMedCrossRefGoogle Scholar