The open abdomen technique and temporary abdominal closure after damage control surgery is fast becoming the standard of care for managing intra-abdominal bleeding and infectious or ischemic processes in critically ill patients. Expansion of this technique has evolved from damage control surgery in severely injured trauma patients to use in patients with abdominal compartment syndrome due to acute pancreatitis and other disorders. Subsequent therapies after use of the open abdomen technique and temporary abdominal closure are resuscitation in the intensive care unit and planned reoperation to manage the underlying cause of bleeding, infection, or ischemia. Determining the need for this poten- T he open abdomen is a technique with recently expanded implementation in managing complex problems in critically ill patients. First used in trauma care in the 1990s, the technique is now a management strategy for many other illnesses and conditions in critically ill adults. The mainstay of treatment for intra-abdominal infections, intra-abdominal bleeding, and abdominal compartment syndrome (ACS), whatever the cause, is the intentional creation of an open abdomen, which is a laparotomy wound that allows a damaged or edematous viscera to expand, reducing intra-abdominal pressure (IAP) and related complications.1 The technique of the open abdomen is defi ned as intentionally leaving the fascial edges of the abdomen unapproximated (laparostomy) through a surgically created entrance into the cavity. As a result, the abdominal contents are exposed but are protected by a temporary 22