Table 3 Classification of perineal tears
From: Management of obstetric anal sphincter injury: a systematic review & national practice survey
Description | 2nd degree | 3rd degree | 4th degree | Not defined | ||||
|---|---|---|---|---|---|---|---|---|
| Â | Consultant | Trainee | Consultant | Trainee | Consultant | Trainee | Consultant | Trainee |
EAS exposed | 579 (86.2%) | 128 (86.5%) | 20 (3%) | 07 (4.7%) | - | - | 73 (10.8%) | 13 (8.8%) |
EAS partly torn | 220 (32.7%) | 32 (21.6%) | 399 (59.4%) | 110 (74.3%) | 10 (1.5%) | 1 (0.7%) | 43 (6.4%) | 05 (3.4%) |
EAS completely torn | 85 (12.6%) | 10 (6.6%) | 518 (77.1%) | 127 (85.8%) | 36 (5.4%) | 05 (3.4%) | 33 (4.9%) | 06 (4.0%) |
IAS exposed | 193 (28.7%) | 34 (22.9%) | 380 (56.5%) | 92 (62.2%) | 31 (4.6%) | 08 (5.4%) | 68 (10.1%) | 14 (9.5%) |
IAS torn | 51 (7.6%) | 06 (4%) | 413 (61.4%) | 95 (64.2%) | 147 (21.9%) | 34 (22.9%) | 61 (9.1%) | 13 (8.8%) |
AS & Mucosa Torn | 05 (0.7%) | - | 162 (24.1%) | 04 (2.7%) | 474 (70.6%) | 135 (91.2%) | 31 (4.6%) | 09 (6.1%) |
AS intact but mucosa torn | 74 (11%) | 09 (6.1%) | 178 (26.4%) | 08 (5.4%) | 280 (41.8%) | 96 (64.9%) | 140 (20.8%) | 35 (23.6%) |