Urodynamics in enuretics II: A pressure/flow study

This study dealt with urodynamics during sleep where enuresis was provoked by filling cystometries. Data were compared to the ones obtained in the same patients in urodynamics at awake state. Fifty‐six sleep cystometries resulted in 31 enuretic events and 25 arousals. Comparison of pressures revealed that enuresis was taking place during an increase in maximal bladder pressure of 20 cm H2O (P<0.05) and a prolonged contraction time (P<0.05). The configuration of the pressure tracing was otherwise completely similar to the ones obtained in awake state. Furthermore, these were similar to data available in the literature of normal children. It is hence concluded that enuretics are urodynamically normal and that the enuretic event is a coordinated micturition initiated at maximal bladder capacity with some indication of increased urethral resistance.