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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.