Isobaric volume registration in the assessment of detrusor instability

Abstract

AbstractAn alternative method to cystometry was used to investigate patients with unstable bladder. This method, isobaric volume registration, differs from cystometry by permitting recording of influences on the bladder during long periods of time at a constant intravesical pressure. Seventy‐five percent agreement between the two methods was found concerning the presence of uninhibited detrusor contractions, but the pressures and volumes at which instability appeared did not correspond with the two methods. Isobaric volume registration is not intended for use as a routine urodynamic investigation but is a useful complementary method in experimental studies to record detrusor responses to nerve and receptor stirnulation and blockade.