To evaluate the use of damage control surgery by performing bowel resection and laparostomy in the treatment of Hinchey III or IV diverticulitis.

Despite the progress in the resuscitation modalities of septic patients, Hartmann procedure (HP) is still considered the safest treatment for generalized peritonitis as a consequence of a complicated acute diverticulitis (stages III and IV of the Hinchey's classification). Almost the half of those patients do not have their stoma reversed because of its association with significant morbidity and mortality. To date, the use of resection with primary anastomosis (PA) is a matter of debate, as it is reported in the literature that it is substantially equivalent to HP in terms of morbidity and length of postoperative stay. For these reason, PA is often reserved for younger patients with few co-morbidities and a lesser degree of peritoneal contamination. In the last decade, Damage Control Surgery has been emerging as a valid alternative to HP and RA in patients presenting a severe sepsis caused by purulent or fecal peritonitis in acute diverticulitis. Initially described for the treatment of major abdominal injuries, indications for DCS have subsequently been extended to septic shock, abdominal compartment syndrome and impossibility to perform a primary closure. However, there is still no consensus about the use of DCS in perforated acute diverticulitis.

The aim of this study was to describe "how-to-use" the Damage Control Surgery in patients with purulent and fecal peritonitis following a severe acute diverticulitis and report the impact on patients' outcomes after the application of this technique in several Italian centers of emergency surgery

Inclusion Criteria:

• Patients undergoing surgery for Hinchey III and IV stage scheduled for immediate Hartmann's procedure and ICU recovery

Exclusion Criteria:

• None

Patients operated on for Hinchey III or IV class and treated by damage control surgery procedure

Individual participant data (IPD) will probably be shared with other researchers

Since six months from study start to six months from study completion

By request