Which of the following is a surgical procedure aimed at preventing miscarriage?

The Shirodkar procedure is indeed a surgical intervention specifically designed to prevent miscarriage in women with a history of cervical incompetence. This technique involves placing a stitching device around the cervix, effectively creating a supportive barrier that helps keep the cervix closed during pregnancy. By reinforcing the cervix, the Shirodkar procedure aims to reduce the risk of premature labor or miscarriage due to cervical dilation.

In contrast, other options provided have different purposes or applications. The purse-string suture is typically used to close circular wounds and is not specific to miscarriage prevention. Trachelorrhaphy refers to the surgical repair of the cervix but does not exclusively serve as a preventative measure against miscarriage. Culdoscopy is a diagnostic procedure that allows for visualization of the pelvic cavity and is not related to preventing miscarriage. Therefore, the Shirodkar procedure stands out as the correct choice due to its specific role in addressing cervical insufficiency and reducing the risk of pregnancy loss.