Controlled limb reperfusion with a simplified perfusion system

Area of Science:

• Vascular Surgery
• Ischemia Research
• Reperfusion Injury Management

Background:

• Revascularization aims to restore limb function after acute ischemia but reperfusion can cause further injury.
• Traditional controlled reperfusion requires specialized cardiosurgical equipment, limiting its use in non-cardiac centers.
• Most acute limb ischemia patients present to general hospitals lacking advanced technical facilities.

Purpose of the Study:

• To modify and simplify the controlled limb reperfusion technique.
• To enable controlled reperfusion in standard operating rooms without cardiosurgical equipment.
• To evaluate the efficacy of a simplified controlled reperfusion system in patients with acute limb ischemia.

Main Methods:

• A modified controlled limb reperfusion technique was developed using a simplified perfusion system with a pressure-cuffed bag.
• The system allowed controlled reperfusion without a roller pump.
• The technique was applied to 9 patients with acute limb ischemia, involving a 30-minute infusion of normothermic reperfusate mixed with patient's blood (6:1 ratio) distally to the obstruction.

Main Results:

• 56% of patients (5/9) recovered normal limb function.
• 22% of patients (2/9) experienced limb loss.
• 22% of patients (2/9) died due to profound cardiogenic shock.

Conclusions:

• The simplified perfusion system makes controlled limb reperfusion feasible in any operating room.
• Controlled limb reperfusion, using this simplified method, should be considered for all patients with acute limb ischemia.
• The technique offers a potential improvement in limb salvage and functional recovery rates.