Hypercalciuria (high levels of calcium in the urine) is thought to influence a child’s prevalence for bedwetting. Civilibal, Duru, Elevli and Civilibal (2014) set out to compare urinary calcium levels over a 24 hour period between bedwetters and non-bedwetters. Their study included 200 children, 120 bedwetters and 80 non-bedwetters. They included kids age 7 to 14 years old. They found that 23% of the bedwetters had elevated calcium in their urine compared to only 4% of the non-bedwetters.
My Opinion: I never check children’s calcium levels in their urine if they only have bedwetting without any other symptoms. If they have frequency, painful urination, or microscopic blood in their urine I will consider a calcium to creatinine ratio. Often times I won’t check this until their second follow up visit because I want them to hydrate well before checking it. This study might change my current practice slightly. I will continue to encourage hydration during the day but with difficult to treat patients I will also encourage a low salt and low calcium evening meal.
Civilibal, M., Duru, N. S., Elevli, M., & Civilibal, N. (2014). Hypercalciuria in children with monosymptomatic nocturnal enuresis. Journal of Pediatric Urology,10(6), 1145-1148. doi:10.1016/j.jpurol.2014.04.015