<prompt> Burst abdomen usually occurs on which post operative day3-Jan8-Jun12-Oct15- 18  <response>: Ans is b i.e., 6-8 Ref: Bailey Love 25the p.986 24the p. 1290; Sabiston, 18the p.330 17the p299Burst Abdomen In 1-2 of cases of laprotomy, mostly between the sixth and eighth day after operation, an abdominal wound bursts open and viscera are extruded. Bailey 25th edn Pg: 986 Burst abdomen occurs mostly between the 7th and 10th day after operation but may occur anytime after surgery from 1 to more than 20 days ref: Sabiston 18e The disruption of the wound tends to occur a few days beforehand when the sutures apposing the deep layers peritoneum, posterior rectus sheath tear through or even become untied.Factors associated with burst abdomen abdominal dehiscencea Suture material: Chromic catgut is associated with high incidence of burst abdomen as it gets absorbed very quickly in 8-9 days. An ideal suture material for abdominal closure should neither disappear nor lose its tensile strength until the wound has regained near-normal tensile strength. Nonabsorbable, monofilament materials are found to be good.b Method of closure Single layer closure has lower incidence than multilayer closure Interrupted suture is better than continuous suturec Drainage Drainage directly through the wound leads to a higher incidence of burst than employing drainage through a separate stab incision.d Incision Midline vertical incisions are more prone to burst than transverse incisionse Reason for initial operation Deep wound infection is prone to cause burst abdomen Operations on pancreas with leakage of enzymes favours dehiscencef Wound complication Hematoma, infectiong Increased intraabdominal pressure Ascites, distended bowel, coughing, vomitingh General condition of the patient Obesity, jaundice, malignant disease, hypoproteinemia and anemia predispose burst abdomen. 