EFFECTS OF HYPERBARIC OXYGEN THERAPY ON THE POST-OPERATIVE PERIOD IN PATIENTS WITH A DIFFERENT FUNCTIONAL STATUS

Aim. To evaluate the effi cacy of hyperbaric oxygenation (HBO) in patients with a different functional status (FS) after the elimination of acute colonic obstruction (ACO).

Materials and methods. A retrospective analysis of 210 medical records of patients who had undergone emergency surgical interventions aimed at ACO elimination was carried out. Based on the value of the direct current potential (DCP), the patients were divided into three groups: 1st (n = 96) with the DCP value from –30 mV and below — FS subcompensation; 2nd (n = 60) with average negative DCP values from –15 to –29.9 mV — FS compensation; 3rd (n = 54) with low negative and positive DCP values from –14.9 mV and higher — FS decompensation. The correlation between patients’ FS and the incidence of postoperative complications was studied, and independent predictors of fatal outcomes were identifi ed. Subsequently, a quantitative analysis of complications and mortality was carried out in each group depending on the use of HBO sessions in the postoperative period, followed by an assessment of their effi cacy.

Results. According to the number of perioperative complications and mortality, risk groups in terms of the unfavourable course of the postoperative period were identifi ed: patients with high negative DCP values, for whom the arterial hypotension and acute kidney injury (AKI) could serve as the independent predictors of death; and patients with low negative and positive DCP values, for whom the statistically signifi cant predictors of mortality were shown to be the DCP level, hypotension, AKI and pneumonia. HBO sessions in the postoperative period allow the number of complications in the general population to be reduced: pneumonia by 7%, delirium by 8.8%, AKI by 6.3%, intestinal dysfunction for more than 3 days by 7.3%. In addition, HBO contributed to a 2.9% decrease in suppurative diseases. The analysis of the data on the HBO application in the general population and FS information showed HBO to have a positive effect on the general somatic status of ACO patients. In addition, HBO treatment is shown to decrease the incidence of complications in the early postoperative period. The effi cacy of HBO is found to be higher in the cohort of the most severe patients with decompensated FS, where such complications as delirium, pneumonia and gastrointestinal paresis were decreased by 22.2%, 13% and 18.5%, respectively. As a result, in this group of patients, a signifi cant decrease of 11.1% in 30-day mortality was achieved.

Conclusion. The postoperative period depends on the actual FS. The conducted analysis of HBO therapy has convincingly confi rmed its effi cacy in the combined treatment of patients after the elimination of ACO.