Skip to main content

Table 1 Anorectal HRAM parameters in 30 healthy study participants

From: Normal values for high-resolution anorectal manometry in healthy young adults: evidence from Vietnam

 

Mean (SD)

Min-Max

Functional anal canal length (cm)

3.4 (0.5)

2.4–4.8

Anal pressure

  

Maximum resting pressure (mm Hg)

65.5 (13.9)

40.2–92.8

Maximum squeezing pressure (mm Hg)

168.0 (61.0)

78.3-352.4

Maximum coughing pressure (mm Hg)

125.9 (41.7)

42.1-228.4

Maximum strain pressure (mm Hg)

84.2 (36.3)

38.6-168.6

Defecation index

2.2 (0.9)

1.3–4.8

Threshold volume to elicit RAIR (mL)

17.0 (5.3)

10–30

Rectal sensation

  

First sensation (mL)

19.7 (7.6)

10–40

Desire to defecate (mL)

46.7 (13.0)

30–90

  1. SD Standard deviation, RAIR rectoanal inhibitory reflex