<prompt> Burst abdomen most commonly occurs on the -2nd day3rd day7th day9th day  <response>: Serous or serosanguinous discharge from the wound is the first sign of dehiscence Most commonly observed between 6th and 8th post-operative day may occur at any time following wound closure Wound dehiscence is partial or total disruption of any or all layers of the operative wound. Extrusion of abdominal viscera after rupture of all layers is known as evisceration. 