Gastroenterol Res

Gastroenterology Research, ISSN 1918-2805 print, 1918-2813 online, Open Access

Article copyright, the authors; Journal compilation copyright, Gastroenterol Res and Elmer Press Inc

Journal website http://www.gastrores.org

Original Article

Volume 12, Number 4, August 2019, pages 198-202

Intra-Esophageal pH Monitoring on Two Consecutive Days in Patients With Gastroesophageal Reflux Symptoms

Figure 1. Box plot of the DeMeester score on the two consecutive days. No difference in mean and median scores was found between the days (P = 0.88).

Figure 2. Box plot of the percentage of time with reflux on the two consecutive days. No difference in mean and median values was found between the two days (P = 0.99).

**Table 1.** Gastroesophageal Acidic Reflux on Two Consecutive Days in Patients With Gastroesophageal Reflux Symptoms
	First day	Second day	P
Number of acidic reflux
Total	58.5 (41.5)	48.5	69.6 (42.7)	76.0	0.71
Upright	41.7 (28.8)	30.0	53.1 (34.9)	52.5	0.07
Supine	18.6 (17.3)	15.5	18.7 (13.9)	18.5	0.89
Number of long reflux
Total	8.3 (8.6)	5.5	10.6 (8.5)	8.0	0.52
Upright	4.4 (4.6)	2.5	6.8 (5.8)	5.5	0.08
Supine	3.9 (4.6)	2.0	3.7 (3.7)	2.5	0.82
Longest reflux (min)
Total	42.7 (47.9)	35.0	26.0 (16.8)	25.3	0.26
Upright	22.8 (21.4)	11.3	17.5 (14.0)	15.1	0.44
Supine	35.2 (50.0)	13.7	18.0 (19.4)	10.0	0.25
Time with reflux (min)
Total	221.4 (194.9)	142.0	224.8 (171.1)	169.0	0.84
Upright	118.6 (94.3)	92.5	147.4 (109.9)	124.5	0.38
Supine	102.9 (130.0)	61.5	77.5 (72.6)	49.0	0.54
% of time with reflux
Total	15.5 (13.5)	10.0	15.5 (12.0)	11.5	0.99
Upright	15.3 (12.4)	10.4	18.5 (13.3)	17.6	0.34
Supine	15.8 (20.6)	9.4	11.6 (11.1)	7.2	0.53
Reflux Index (reflux/h)
Total	2.5 (1.7)	2.1	2.9 (1.8)	3.1	0.16
Upright	3.2 (2.0)	2.9	4.0 (2.5)	3.9	0.02
Supine	1.7 (1.7)	1.2	1.6 (1.2)	1.5	0.87
Esophageal clearance (min/reflux)
Total	4.1 (4.6)	3.2	3.2 (1.4)	3.1	0.37
Upright	3.5 (4.1)	2.1	2.8 (1.5)	2.5	0.51
Supine	4.8 (4.2)	3.9	3.3 (2.3)	3.5	0.33

Table 1. Gastroesophageal Acidic Reflux on Two Consecutive Days in Patients With Gastroesophageal Reflux Symptoms

First day

Second day

Mean (SD)

Median

Mean (SD)

Median

Number of acidic reflux

Total

58.5 (41.5)

48.5

69.6 (42.7)

76.0

0.71

Upright

41.7 (28.8)

30.0

53.1 (34.9)

52.5

0.07

Supine

18.6 (17.3)

15.5

18.7 (13.9)

18.5

0.89

Number of long reflux

Total

8.3 (8.6)

5.5

10.6 (8.5)

8.0

0.52

Upright

4.4 (4.6)

2.5

6.8 (5.8)

5.5

0.08

Supine

3.9 (4.6)

2.0

3.7 (3.7)

2.5

0.82

Longest reflux (min)

Total

42.7 (47.9)

35.0

26.0 (16.8)

25.3

0.26

Upright

22.8 (21.4)

11.3

17.5 (14.0)

15.1

0.44

Supine

35.2 (50.0)

13.7

18.0 (19.4)

10.0

0.25

Time with reflux (min)

Total

221.4 (194.9)

142.0

224.8 (171.1)

169.0

0.84

Upright

118.6 (94.3)

92.5

147.4 (109.9)

124.5

0.38

Supine

102.9 (130.0)

61.5

77.5 (72.6)

49.0

0.54

% of time with reflux

Total

15.5 (13.5)

10.0

15.5 (12.0)

11.5

0.99

Upright

15.3 (12.4)

10.4

18.5 (13.3)

17.6

0.34

Supine

15.8 (20.6)

9.4

11.6 (11.1)

7.2

0.53

Reflux Index (reflux/h)

Total

2.5 (1.7)

2.1

2.9 (1.8)

3.1

0.16

Upright

3.2 (2.0)

2.9

4.0 (2.5)

3.9

0.02

Supine

1.7 (1.7)

1.2

1.6 (1.2)

1.5

0.87

Esophageal clearance (min/reflux)

Total

4.1 (4.6)

3.2

3.2 (1.4)

3.1

0.37

Upright

3.5 (4.1)

2.1

2.8 (1.5)

2.5

0.51

Supine

4.8 (4.2)

3.9

3.3 (2.3)

3.5

0.33

**Table 2.** Gastroesophageal Acidic Reflux During 2 h After Meal on Two Consecutive Days
	First day	Second day	P
Number of acidic reflux	35.4 (29.4)	26.5	46.8 (29.7)	46.5	0.01
Number of long reflux	4.8 (5.7)	1.5	7.0 (5.4)	6.0	0.08
Longest reflux (min)	27.0 (42.5)	7.2	19.0 (14.9)	15.1	0.58
Time with reflux (min)	122.3 (113.6)	72.5	144.6 (104.9)	133.0	0.44
% of time with reflux	20.8 (18.8)	13.1	25.0 (17.8)	26.0	0.43
Reflux index (reflux/h)	3.8 (2.7)	3.0	5.2 (2.7)	4.9	0.01
Esophageal clearance (min/reflux)	4.4 (6.4)	2.3	3.3 (2.2)	3.0	0.50

Table 2. Gastroesophageal Acidic Reflux During 2 h After Meal on Two Consecutive Days

First day

Second day

Mean (SD)

Median

Mean (SD)

Median

Number of acidic reflux

35.4 (29.4)

26.5

46.8 (29.7)

46.5

0.01

Number of long reflux

4.8 (5.7)

1.5

7.0 (5.4)

6.0

0.08

Longest reflux (min)

27.0 (42.5)

7.2

19.0 (14.9)

15.1

0.58

Time with reflux (min)

122.3 (113.6)

72.5

144.6 (104.9)

133.0

0.44

% of time with reflux

20.8 (18.8)

13.1

25.0 (17.8)

26.0

0.43

Reflux index (reflux/h)

3.8 (2.7)

3.0

5.2 (2.7)

4.9

0.01

Esophageal clearance (min/reflux)

4.4 (6.4)

2.3

3.3 (2.2)

3.0

0.50