Non-invasive measurement of pan-colonic pressure over a whole digestive cycle: Clinical applications of a capsule-style manometric system

Table 1 Transit time detected by markers and ultrasound (mean ± SD)

Transit time (h)	Total colon	Right colon	Left colon	Rectosigmoid
Markers	31.5 ± 6.8	8.6 ± 3.3	11.4 ± 3.6	11.5 ± 3.3
Ultrasonic	29.7 ± 5.9	9.3 ± 3.5	10.8 ± 3.1	9.7 ± 2.9
Correlation	0.92	0.91	0.93	0.86

Table 2 Colonic motility response to waking and meal (mean ± SD)

	Waking		Meal Ingestion
	1 h before	1 h after	2 h before	2 h after
No. of Contrctions (h-1)
Right colon	14 ± 4a	45 ± 6a	21 ± 6	44 ± 8b
Left colon	13 ± 3a	39 ± 4	22 ± 5	38 ± 6
Rectosigmoid	19 ± 5a	29 ± 4a	20 ± 6	32 ± 7b
AUC (mmHg·s·min-1)
Right colon	322 ± 44	984 ± 91a	471 ± 59	862 ± 79
Left colon	307 ± 41b	835 ± 82	465 ± 52	812 ± 74
Rectosigmoid	431 ± 52b	725 ± 64a	453 ± 52	773 ± 71

^aP < 0.05,

^bP < 0.01 vs segmental colons.