Immediate Conversion to Laparotomy for Hemodynamic Instability

Rationale for Immediate Conversion

The World Society of Emergency Surgery guidelines state that hemodynamic instability during emergency colorectal operations is an absolute indication for conversion to laparotomy, as it may indicate ongoing bleeding, cardiovascular compromise, or evolving sepsis 1

Upon conversion to laparotomy, the surgical team must rapidly identify the source of hemodynamic compromise and achieve immediate hemorrhage control if bleeding is identified, considering damage control surgery principles if the patient remains unstable 1, 4
Hemodynamically unstable patients have prohibitive risk for primary anastomosis due to factors including coagulopathy, acidosis, and hypothermia, making Hartmann's procedure a preferred option 4

If sigmoid cancer with viable bowel is present, perform sigmoid resection with end colostomy (Hartmann's procedure) in unstable patients, as primary anastomosis is contraindicated given hemodynamic instability 4, 5
If bowel ischemia or perforation is discovered, resect non-viable segments with minimal manipulation and create end colostomy without attempting anastomosis, initiating broad-spectrum antibiotics if not already started 1, 3, 4

The American College of Surgeons and the World Society of Emergency Surgery recommend immediate conversion to laparotomy in cases of hemodynamic instability during laparoscopic surgery, as delaying conversion can increase morbidity and mortality 1