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Table 2 3D-EUS and 3D-HRAM findings in 30 control patients

From: 3D high-resolution anorectal manometry in patients with perianal fistulas: comparison with 3D-anal ultrasound

Patient groups

Defects on EUS

No defects on EUS

Number of patients (Male/Female)

10 (5/5)

20 (10/10)

3D-EUS

Defects

 IAS

5 (5/0)

-

 EAS

4 (0/4a)

-

 IAS + EAS

1 (0/1a)

-

3D-HRAM

 MRP (mmHg)

65

75

 MSP (mmHg)

93

125

 MRP defect (mmHg)

27

 MRP non-defect (mmHg)

68

 MSP defect (mmHg)

52

 MSP non-defect (mmHg)

100

 Sphincter length (cm)

3.1

3.2

 Groove (n)

6 (3/3)

Agreement 3D-EUS and 3D-HRAM

 Good

6 (3/3a)

 Moderate

4 (2/2a)

 No

0

  1. aWomen with a traumatic delivery. IAS internal anal sphincter, EAS external anal sphincter, MRP mean resting pressure, MSP mean squeeze pressure