Bladder capacity in infants.
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.
Fairhurst
J J
JJ
Wessex Department of Paediatric Radiology, Southampton General Hospital, England.
Rubin
C M
CM
Hyde
I
I
Freeman
N V
NV
Williams
J D
JD
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