Blethyn et al evaluated children with constipation using a single abdominal radiograph to grade the fecal content in the colon. The authors are from the University Hospital of Wales and Cardiff Royal Infirmary.
Appearance
Grade
Severity
stool limited to cecum and rectum
0
none
stool increased, with stool in cecum and rectum and discontinuous elsewhere
I
mild
stool continuous (allowing for gas) and affecting all segments
II
moderate
stool continuous and colon distended, with impaction in rectum
III
severe
Performance:
• The grading scheme showed a low interobserver variability.
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