The Effect of Pseudomonas Aeruginosa Infection as A Cause of Increased Procalcitonin Levels on Colon Anastomotic Leakage in Post-Laparotomy Wistar Rats Aprilia Antonia Sarwom1, Kadek Deddy Ariyanta2, Gede Wirya Kusuma Duarsa3 Abstract Background: Anastomotic leakage is a serious complication with a 6–39% mortality rate. Pseudomonas aeruginosa impairs healing, while procalcitonin