S1333 A Comparison of Two Radio-Opaque Marker Methodologies in the Assessment of Colonic Transit of Adults With Constipation

Generalized Transit Delay on Wireless Motility Capsule Testing in Patients with Clinical Suspicion of Gastroparesis, Small Intestinal Dysmotility, or Slow Transit Constipation

“…Further center-to-center variability in test meals, sampling intervals, and analysis algorithms undermine gastric scintigraphy accuracy [1]. The most common radioopaque colon transit test (Hinton) obtains one radiograph 5 days after marker ingestion and may be less accurate than the more intensive Metcalf method of serial X-rays after 3 days of marker ingestion [21,29,30]. Barium testing of small bowel transit is not standardized, while lactulose breath tests are unreliable due to artificial acceleration of small bowel propulsion by the substrate [31,32].…”