Evaluation of the urinary tract in children with myelomeningocele.

Of 43 children suffering from myelomeningocele, 2 died of obstructive nephropathy; 30 survived for more than 6 years and 12 of these developed upper urinary tract dilatation. A bladder compliance above 20 was only found in 4 patients, while in 11 with detrusor hyperreflexia, a low pressure amplitude was generally observed. Detrusor-sphincter dyssynergia accompanied by large residual volumes was found in 4 patients. Surveillance of the urological condition is discussed.