The after-contraction in urodynamic micturition studies

The detrusor after-contraction is an involuntary detrusor contraction occurring after the completion of voiding. These contractions were seen in the micturition studies of 20 patients undergoing videourodynamic study to investigate a variety of nonneurogenic urine voiding or storage problems. The contractions occurred in stable bladders on 15 of 20 occasions and only 2 of 20 cases exhibited obstructive urodynamics. Eleven of the 15 patients had hypersensitive bladders. We explore its possible etiology and conclude that it is of neither functional significance nor diagnostic value.