Does deep sedation impact the results of 48 hours catheterless pH testing?

Table 1 Indication for Bravo monitoring

Indication	Frequency	Percent (of n = 108)
Heartburn	63	58.30%
Chest pain	32	29.60%
Chronic cough	9	8.30%
Laryngitis	23	21.30%
Bloating	38	35.20%

Total percentages exceed 100% since about half of the patients had two distinct indications.

Table 2 Time pH < 4 - upright (%)

	Mean	Median	SD	Minimum	Maximum
Day 1 (d1)	7.31	5.70	7.55	0	41.4
Day 2 (d2)	6.52	4.85	7.89	0	59.6
Delta = d2-d1	-0.79	-0.50	5.81	-19.9	24.8

Mean Delta (-0.79) not significantly different from zero (P = 0.0576) by signed rank test.

Table 3 Time pH < 4 - supine (%)

	Mean	Median	SD	Minimum	Maximum
Day 1 (d1)	4.01	0.25	8.94	0.0	60.2
Day 2 (d2)	4.66	0.00	12.20	0.0	87.4
Delta = d2-d1	0.65	0.00	11.80	-33.1	63.3

Mean Delta (0.65) not significantly different from zero (P = 0.56) by signed rank test.

Table 4 Time pH < 4 - total (%)

	Mean	Median	SD	Minimum	Maximum
Day 1 (d1)	6.36	4.85	7.60	0.0	48.1
Day 2 (d2)	6.02	4.25	8.02	0.0	67.1
Delta = d2-d1	-0.34	0.00	6.13	-22.5	29.6

Mean Delta (-0.34) not significantly different from zero (P = 0.73) by signed rank test.

Table 5 DeMeester score

	Mean	Median	SD	Minimum	Maximum
Day 1 (d1)	22.0	16.3	25.7	0.0	163.7
Day 2 (d2)	21.1	15.2	25.6	0.0	213.0
Delta = d2-d1	-0.9	0.0	21.0	-100.5	82.2

Mean Delta (-0.9) not significantly different from zero (P = 0.90) by signed rank test.