Distal bypass to a critically ischemic foot increases the skin perfusion pressure at the opposite site of the distal anastomosis

Abstract

Introduction

The purpose of the study was to reveal the effect of blood flow supply to the foot by analyzing the skin perfusion pressure values and the pedal arch connection after bypass surgery.

Patients and methods

We selected 48 operated limbs whose skin perfusion pressure was measured pre- and post-operatively on the opposite site of distal anastomosis. We also assigned the ischemic limbs to three groups according to the patency of the pedal arch: good, intermediate, and poor.

Results

The mean value of skin perfusion pressure increased significantly from 27.0 ± 14.9 to 52.8 ± 16.0 (p < 0.001) post-operatively. Skin perfusion pressure improved in most of the limbs post-operatively and decreased or unchanged in only four limbs, all of which showed improved tissue loss. Three amputated limbs were due to infection, and all showed an increase in skin perfusion pressure.

Conclusion

It was difficult to correlate limb prognosis to skin perfusion pressure and the pedal arch connection.