Morphological research of the effectiveness of perioperative local use of anesthetics and antiseptics in patients with purulent-necrotic lesions of lower extremities in diabetes mellitus

Ulcer-necrotic lesions of the feet are detected in 5-15% of patients with diabetes mellitus (DM). According to the literature today in Ukraine, patients with DM perform high amputation of the lower extremities with diabetic foot syndrome with a frequency of 19.6-42.6%, at the same time, mortality ranges from 8.9% to 25.0%, and the total mortality rate at the DM varies from 6.6% to 13.5%, often associated with the occurrence of postoperative complications. The aim of the work was to study morphological indicators of reparation of soft tissues of the lower extremities in patients with diabetic foot syndrome on the background of local treatment during the perioperative period. We investigated changes in histologic structure and character of reactions of skin tissues, muscles and fascia during the period of visceral disease in patients with diabetes mellitus after different types of local treatment. Then, samples of skin tissues, muscles and fascia were photographed and analyzed using a light microscope OLIMPUS BX 41. In the first group of the comparison, which used standard methods of anesthesia and local antiseptic povidone-iodine, granulation tissue was characterized by the complete absence of fibrous structures (collagen fibers) and the presence of a small number of newly formed small diameter vessels with blistered endothelium. Vessels of young granulation tissue were dilated, full-blooded, the endothelium was swollen, there was significant perivascular edema. In the second group of patients (where povidone-iodine and infiltration anesthesia with 2% lidocaine solution anesthetic was used locally) there were almost no remains of necrotic tissues in the affected tissues. It should be noted that there was better granulation development with fewer inflammatory-cell elements, more young forms of fibroblasts and a moderate pathological vascular reaction. In the first (control) group, wound healing by 3-7 days is characterized by somewhat slow regeneration. Wound healing was most favorable in patients of the second group, where infiltration anesthesia was used by local anesthetic and antiseptic povidone-iodine.