The study team will prospectively enroll subjects with a diagnosis of appendicitis who are scheduled for laparoscopic appendectomy to have Hem-o-Lok® clips used for closure of the appendiceal stump. All subjects enrolled in the study will have their medical chart reviewed from consent to 30 days post operatively.

The study team will retrospectively identify patients who have undergone laparoscopic appendectomy during a one year time span by performing a database search. The operative notes will be reviewed for these patients to select patients who underwent ligation of the appendix with an endoscopic stapler.

The study team will prospectively enroll subjects with a diagnosis of appendicitis who are scheduled for laparoscopic appendectomy to have Hem-o-Lok® clips used for closure of the appendiceal stump.

Charts will be reviewed to calculate the number of days the subject was in the hospital. Clinical and financial outcomes of subjects enrolled for laparoscopic appendectomy using Hem-o-Lok will be compared to a historical (retrospective) cohort of patients who underwent appendectomy using endoscopic staplers.

Data will be gathered on the expense of the subjects hospital stay from admission, surgery, to discharge. Clinical and financial outcomes of subjects enrolled for laparoscopic appendectomy using Hem-o-Lok will be compared to a historical (retrospective) cohort of patients who underwent appendectomy using endoscopic staplers.

Subject's chart will be reviewed to gather operative start and stop times. Clinical and financial outcomes of subjects enrolled for laparoscopic appendectomy using Hem-o-Lok will be compared to a historical (retrospective) cohort of patients who underwent appendectomy using endoscopic staplers.

Measures of surgical outcomes will be compared between the two procedures including rates of postoperative appendiceal stump dehiscence, hemorrhage, pneumonia, urinary tract infection, myocardial infarction, pulmonary embolism, deep vein thrombosis, and death.