In group A, Negative Pressure Wound Therapy will be applied at end of laparotomy. Participants will be shifted to post-surgical wad for 72 hours and then will be discharged with prescription of standard antibiotics course. Patients will be followed-up in OPD for 30 days and will be assessed in terms of surgical site infection and re operation.

In group B, Negative Pressure Wound Therapy will be applied at end of laparotomy. Participants will be shifted to post-surgical wad for 72 hours and then will be discharged with prescription of standard antibiotics course. Patients will be followed-up in OPD for 30 days and will be assessed in terms of surgical site infection and re operation.

Negative Pressure Wound Therapy is an intervention in which a suction is applied at applied thus creating a negative pressure which not only removes any exudate but also aids in formation of granulation tissue. NPWT is provided along with empirical prophylactic antibiotics

It will be labelled if there will be presence of pus and pus discharge from wound site, confirmation of presence of pathogen through culture along with presence of pain, swelling, tenderness at wound site on physical examination during 15-30 days of surgery.

It will be labelled if patient will undergo surgery due to severe surgical site wound infection that develop during 15-30 days of surgery and not healed with antibiotics course.