Table 4 Results of anorectal pressure test in case 1 and case 2 at the 3rd month postoperatively

Anal canal contraction reflex (KPa)

0

0

Anal canal reflex diastolic pressure (KPa)

1.5

2.2

Anal canal maximum systolic pressure (KPa)

19.2

9.2

The longest contraction time of anal canal (s)

14

23

Anal canal defecation diastolic pressure (KPa)

-2.2

-1.9

Rectal systolic pressure (KPa)

4.6

3.3

Anal canal resting pressure (KPa)

5.8

9.5

Rectal resting pressure (KPa)

0.1

0.2

Functional length of anal canal (mm)

27

27

Rectal sensory capacity threshold (mL)

25

40

Maximum rectal tolerance capacity (mL)

60

100

Action correlation

Negative

Negative