Evaluation of the occurrence and diagnose definitions for nocturnal polyuria in spinal cord injured patients during rehabilitation.

Background: Little is known about the occurrence of nocturnal polyuria (NP) in spinal cord injured (SCI) patients and the definitions which are preferable in this population.

Aim: To determine the occurrence of NP in SCI patients during in-patient rehabilitation in the Ghent University Hospital. To study the influence of different time periods (daytime, bed rest and sleep) on the accuracy of the existing diagnose definitions for NP specifically for this type of patients.