Table 4 Characteristics of HRIM parameters according to feeding tolerance

Number of panesophageal events /h

17 (11–26)

6 (4–8)*

Distal contractile integral (mmHg cm s, median/IQR)

7661 (1580–11,908)

3111 (1700–5068)

Failed esophageal peristalsis (%, median/IQR)

62 (50–73)

85 (69–98)

Panesophageal pressurization (%, median/IQR)

62 (50–73)

69 (43–83)

Double-peaked waves (%, median/IQR)

48 (43–51)

0 (0–5)*

Premature contraction (%,median/IQR)

31 (25–37)

2 (1–19)*

Rapid contraction (%, median/IQR)

12 (11–22)

0 (0–0)*

Integrated relaxation pressure (mmHg, median/IQR)

20 (16–28)

6 (6–16)

Intrabolus pressure (mmHg, median/IQR)

19 (16–27)

25 (19–30)

LES tone (mmHg, median/IQR)

25 (19–31)

9 (8–16)*

EGJ-CI (mmHg cm, median/IQR)

53 (40–60)

30 (20–50)

Inspiration EGJ pressure (mmHg, median/IQR)

40 (35–48)

34 (28–36)

Expiration EGJ pressure (mmHg, median/IQR)

30 (22–35)

20 (19–25)

Hiatal hernia presence (%)

13

25