Radiographie estimation of colonie transit time with kolomark™ in normal Dogs

Colonic transit time plays an important role in creating a disease category and treatment plan in patients with chronic constipation or bowel movement problem. The aim of this study is to establish normal colon transit time using Kolomark, a radiopaque marker in dogs. The transit time of Kolomark in colon was measured every 2, 4, 8, 12, 24, 48 hours in 11 healthy Beagle dogs with oral administration of the marker. Kolomark began to appear in colon after 4 hours from administration and the largest number of Kolomark in colon was observed after 12 hours. Then, after 24 hours, some quantity of Kolomark was found but Kolomarks were all eliminated from the colon after 48 hours. The mean emptying time of Kolomark was 28.36 hours. Based on this study, the normal range of colon transit time in dogs was established by using the Kolomark, and it could be used as reference data for objective evaluation of constipation in canine patients.