Detection of urine loss using the Exeter recording nappy and other similar devices

A technical evaluation of the Exeter recording nappy has been carried out with particular reference to (a) linearity, (b) reproducibility of calibration, (c) the effect of variation in the position of moistened zones produced by consecutive leakages and (d) the effect of variation in the electrical conductivity of the liquid detected. The clinical use of the nappy is also discussed. A miniature alarm coupled to a similar pad arrangement has been developed as a training system for the geriatric incontinent patient and patients with neurogenic bladders. A 'pad and pant' version of an enuresis alarm has also been designed which had advantages over the conventional under-sheet type.