Presentation
Work up for chronic constipation.
Patient Data
Age: 55 years
Gender: Female
From the case:
Slow colon transit
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Twenty-four markers are ingested in this case, and abdominal x-rays are taken 1, 24, 72, and 120 hours later. All 24 markers are retained on day five, located within the transverse and descending colon.
Case Discussion
There are variations in how a colonic transit study is conducted and how the findings are interpreted.
If 24 markers are used, <5 markers should be present within five days in a patient with normal colon transit.