Table 3.

Dye migration (in mm) against gravity over time in 4% sodium citrate-locked polyurethane catheters exposed to ambient temperature and humidity

	Untreated (control)				White petrolatum– mineral oil				Liquid bandage				Sheath with liquid bandage				Sheath with cyanoacrylate
	24 h	48 h	72 h	96 h	24 h	48 h	72 h	96 h	24 h	48 h	72 h	96 h	24 h	48 h	72 h	96 h	24 h	48 h	72 h	96 h
Days 1–3	14	25	34	41	8	13.5	17	22	9	17	24.5	30	7	14	20	25	8.5	14	19	23
Days 4–6	14	25	34	41	7	12	16	20	8	15.5	22	28	7	14	19.5	24.5	9.5	13	17	20
Days 7–9	14.5	25.5	35	42	6.5	11	15	19	8	15.5	21.5	27	7	13	19	24	10	15	19.5	24
Days 10–12	13.5	24	34	41	6	10	14	17	8.5	16	23	29	6.5	13	19	24	12	18	23	27
Mean	14	24.9	34.3	41.3	6.9	11.6	15.5	19.5	8.4	16	22.8	28.5	6.9	13.5	19.4	24.4	10	15	19.6	23.5
SE	0.2	0.3	0.3	0.3	0.4	0.7	0.6	1.0	0.2	0.4	0.7	0.6	0.1	0.3	0.2	0.2	0.7	1.1	1.2	1.4

Untreated catheters received no external coating. Treated catheters received an external layer of white petrolatum–mineral oil or liquid bandage or a polyethylene sleeve (Sheath) affixed with either liquid Bandage or cyanoacrylate. All variables were tested concurrently within each of 4 separate experiments (n = 4; days 1–3, 4–6, 7–9, and 10–12).