Prolonged regional analgesia in the complex treatment of extensive purulent-necrotic wounds on the background of decompensated arterial and venous insufficiency (case report

Abstract

Objective: to demonstrate the successful complex treatment of a shin circular wound in a patient with intense pain due to critical limb ischemia and wound infection, which became possible against the background of prolonged peripheral blockade. Materials and methods. A 72-year-old patient with critical ischemia of the right lower extremity was treated for a circular purulent-necrotic wound of the shin leg from November 2016 to April 2017 at the Wounds and Wound Infections Department of FSBI “A. V. Vishnevsky NRC of Surgery” Ministry of Health of Russia. An examination revealed the impossibility of right lower limb arterial insufficiency surgical correction. The patient refused amputation of the lower limb. For the relief of pain, a long-term blockage of the sciatic nerve was used (infusion of ropivacaine 6.0–8.0 mg / hr into the perineural catheter, additional 100 mg ropivacaine boluses were used before performing traumatic daily dressings). The intensity of pain was evaluated on a visual analogue scale (VAS), sought to achieve a pain intensity of not more than 3 points at rest and not more than 4 points on – when moving. Results. Blockade of the sciatic nerve reduced the intensity of pain from 8–10 to 0–3 points, which made it possible to continue treatment. In total, the duration of sciatic nerve catheterization at the stages of treatment was 115 days (18 + 41 + 23 + 32), the maximum duration of one of the peripheral nerve catheterizations was 41 days. Complications associated with nerve catheterization were not observed in the patient. The pain syndrome is stopped, the area of the wound defect is reduced in size. Discharged for outpatient treatment. Conclusion. Long-term peripheral analgesia made it possible to gain time necessary for cleansing the wound surface from necrotic tissues, therapy with drugs that improve arterial blood supply to the limbs, as well as for performing reconstructive and reconstructive operations after the wound process has passed to the reparative stage. Long-term peripheral blockade is a prerequisite for the successful treatment of extensive wounds of the lower extremities caused by insufficient arterial blood supply at the stage of critical limb ischemia, accompanied by intense pain.