title: Duration of voluntary apnea in children.
abstract: Results of breathholding were recorded in 50 children prior to excretory urography to help determine the optimal sectional imaging technique according to age and expected ability to suspend respiration during examination.
mesh_terms: D002675:Child, Preschool; D006801:Humans; D007223:Infant; D012119:Respiration; D013997:Time Factors; D014567:Urography