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158 Chapter 7 TABLE 1: The propagating motor patterns identified in each of the subject prior to and after the meal and in response to colonic infusion of bisacodyl. Subject Gender, (age) Pre-Meal Post-Meal Bisacodyl HAPS RAIR on anorectal manometry CTT + HAPS Cyclic Short single Long, single HAPS Cyclic Short single Long, single 1 F (16) - - - ü - - - ü ü * normal delayed 2 F (17) - - ü - - ü ü - ü * normal normal 3 F (16) - ü ü - - - - ü -* normal delayed 4 F (15) - ü ü ü - ü ü ü ü absent RAIR - 5 M (12) - ü ü ü - ü ü ü ü * normal - 6 F (15) - ü - ü - ü - ü ü * - - 7 M (13) - - - ü - - - ü ü * - - 8 F (15) - ü - ü - ü ü ü ü * normal normal 9 F (9) - ü ü - ü - ü - ü * absent RAIR - 10 F (17) - - - ü - - ü - ü * - delayed 11 F (18) - - - ü - - ü ü * normal delayed 12 M (6) ü - ü - ü ü ü ü ü - delayed 13 F (4) - ü ü ü - - - ü ü * - - 14 F (17) - ü - ü - ü - ü ü normal - 15 M (14) - ü - ü - ü - ü ü * normal normal 16 M (14) - - - ü - - - ü ü * -- - 17 F (12) - ü - ü - ü - ü ü * normal delayed 18 F (18) - - ü ü - ü ü ü - normal - *In patients with normal colonic transit, laxatives were taken during the transit studies. †Defecation occurred after Bisacodyl infusion. F, female; M, male (age in years); RAIR, recto-anal inhibitory reflex; CTT, colonic transit time; HAPS, high-amplitude propagating sequence; Cyclic, propagating motor pattern; Short single, propagating motor pattern; Long single, propagating motor pattern.