Peripartum perineal tear classifications

Perineal tears

These are classified into 4 degrees:

 

  • 1st-degree tears are where the fourchette and vaginal mucosa are damaged and the underlying muscles are exposed, but not torn.
  • 2nd-degree tears are to the posterior vaginal walls and perennial muscles, but the anal sphincter is intact.
  • 3rd-degree tears extend to the anal sphincter that is torn, but the rectal mucosa is intact.
  • 4th-degree tears are where the anal canal is opened, and the tear may spread to the rectum.
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