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Table 1 3D-EUS and 3D-HRAM findings in patients with fistulas

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

Patient groups Total group Primary fistula Seton/abscess drainage Recurrent fistula
Number of patients (Male/Female) 40 (21/19) 4 (3/1) 19 (5/14) 17 (13/4)
3D-EUS
Fistula type (n)
 Simple 7 0 6 1
 Complex 33 4 13 16
Additional defects (n)
 IAS 4 (2/2) 0 2 (0/2a) 2 (2/0)
 EAS 4 (1/3) 0 2 (0/1a1) 2 (1/1)
 IAS + EAS 4 (3/1) 0 1 (1/0) 3 (2/1a)
3D-HRAM
 MRP (mmHg) 69 81 65 70
 MSP (mmHg) 125 145 106 143
 MRP FTA (mmHg) 47 66 42 47
 MRP Non-FTA (mmHg) 76 95 74 73
 MSP FTA (mmHg) 92 111 82 99
 MSP Non-FTA (mmHg) 138 175 130 138
 Sphincter length (cm) 3.3 4.4 3.2 3.0
 Groove (n) 11 2 5 4
  Simple fistula 0 0 0 0
  Complex fistula 11 2 5 4
Agreement 3D-EUS and 3D-HRAM
 Good 24 3 12 9
 Moderate 8 0 4 4
 No 8 1 3 4
  1. aWomen with a traumatic delivery. IAS internal anal sphincter, EAS external anal sphincter, MRP mean resting pressure, MSP mean squeeze pressure, FTA fistula tract area