Appendectomy (appendisectomy or appendicectomy)

An appendectomy (sometimes called appendisectomy or appendicectomy) is the surgical removal of the vermiform appendix. This procedure is normally performed as an emergency procedure, when the patient is suffering from acute appendicitis. However, a 12-hour delay had no effect on outcomes, in a large retrospective study.

In one large observational study in 2003, 30-day mortality was 1.8% in an adult population.

Appendectomy may be performed laparoscopically (in minimally invasive surgery) or as an open operation. Laparoscopy is often used if the diagnosis is in doubt, or if it is desirable to hide the scars in the umbilicus or in the pubic hair line. Recovery may be a little quicker with laparoscopic surgery; the procedure is more expensive and resource-intensive than open surgery and generally takes a little longer, with the (low in most patients) additional risks associated with pneumoperitoneum (inflating the abdomen with gas). Advanced pelvic sepsis occasionally requires a lower midline laparotomy.