Following delivery, tear involves perineum, external anal spincter with intact mucosa, grade of tear is -
Ans. is 'c' i.e., Third degree Classification of Obstetric Anal Sphincter Injuryo First degree : Injury to perineal skino Second degree : Injury to perineum involving perineal body (muscles) but not involving the anal sphinctero Third degree : Injury to perineum, involving the anal sphincter complex (both the external and internal).# 3a: if half thickness external anal sphincter involved.# 3b: if full thickness external anal sphincter involved.# 3c: if internal anal sphincter involoved.o Fourth degree : Injury to perineum involving the anal sphincter complex (external anal sphincter and internal anal sphincter) and anal epithelium.
First degree
Second degree
Third degree
Fourth degree
Injury to the Birth Canal