<prompt> Burst abdomen after laprotomy takes place after -1-2 days6-9 days2 weeks4 weeks  <response>: Ans. is b i.e., 6-9 days Dehiscence most often develops 7 to 10 days postopera lively but may occur anytime after surgery, from 1 to more than 20 days. - Sabistono Burst abdomen or wound dehiscence refers to postoperative separation of the abdominal masculoaponeurotic layers.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 ofclosure Single layer closure has lower incidence than multilayer closure Interrupted suture is better than continuous suture.c 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 incisions.e Reason for initial operation Deep wound infection is prone to cause burst abdomen. Operations on pancreas with leakage of enzymes favours dehiscence.f 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 abd. 