title: Bladder capacity in infants.
abstract: Bladder capacity was measured at micturating cystourethrography and normal ranges were established for children up to 1 year of age. Bladder capacity was compared with patient weight and distance from first lumbar to third lumbar vertebrae (L1 to L3). The simplified formula--Capacity (mL) = 7 x weight (kg)--was shown to give a reliable estimate of the expected bladder capacity in infants independent of age; this is useful in those infants whose weight lies outside the normal range for their age. Similarly, a formula was deduced relating expected bladder capacity to the measured L1 to L3 distance on an anteroposterior radiograph, which is of potential use to radiologists.
authors.affiliation: Wessex Department of Paediatric Radiology, Southampton General Hospital, England.
authors.forename: J J
authors.initials: JJ
authors.lastname: Fairhurst
authors.forename: C M
authors.initials: CM
authors.lastname: Rubin
authors.forename: I
authors.initials: I
authors.lastname: Hyde
authors.forename: N V
authors.initials: NV
authors.lastname: Freeman
authors.forename: J D
authors.initials: JD
authors.lastname: Williams
mesh_terms: D001835:Body Weight; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D011859:Radiography; D001743:Urinary Bladder / Q000033:anatomy & histology* / Q000000981:diagnostic imaging / Q000502:physiology; D014554:Urination