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INTRODUCTION: Taking into account the prevalence of postoperative pneumonia and the increase in the number of surgical procedures, forecasting its development is an urgent task that allows taking measures to reduce the frequency of its occurrence by optimizing the perioperative period. Despite their value, the existing scales for predicting postoperative pneumonia do not provide domestic specialists with a reliable and consistent method by which to stratify the risk of developing postoperative pneumonia in our population. OBJECTIVE: To develop a model for predicting postoperative pneumonia based on the identification of risk factors for its development. MATERIALS AND METHODS: A multicenter prospective study of 6844 patients over 18 years of age undergoing elective abdominal surgery. 30-day mortality and postoperative pneumonia were assessed. In the first phase of the study, a comparison was made between the pneumonia and non-pneumonia group of baseline patient data, as well as factors associated with surgery and anesthesia. At the second stage of the study, a logistic regression analysis was performed to assess the contribution of factors to the development of postoperative pneumonia. At the third stage of the study, a model for predicting postoperative pneumonia was built according to the data of multivariate logistic regression analysis. At the final stage, the obtained model was compared with the forecasting models of other authors found in the world literature. RESULTS: Pneumonia was detected in 53 patients (0.77 %). A lethal outcome was observed in 39 patients: in patients with pneumonia in 15 cases (28.3 %), and without pneumonia in 24 cases (0.4 %). Retrospectively, taking into account the obtained model, 933 patients were assigned to the high-risk group for developing pneumonia, the incidence of pneumonia was 4.5 %. In the low-risk group for developing pneumonia — 5911 patients, the incidence of pneumonia was 0.19 %. CONCLUSIONS: Eight independent variables associated with postoperative pneumonia were identified: duration of surgery, smoking, complete functional dependence, perioperative anemia requiring iron supplementation, intraoperative use of vasopressors, American Society of Anesthesiologists classification 3 functional class, use of bronchodilators for chronic obstructive pulmonary disease, and high operative risk. The postoperative pneumonia prediction model has excellent predictive value (AUROC = 0.904).
INTRODUCTION: Taking into account the prevalence of postoperative pneumonia and the increase in the number of surgical procedures, forecasting its development is an urgent task that allows taking measures to reduce the frequency of its occurrence by optimizing the perioperative period. Despite their value, the existing scales for predicting postoperative pneumonia do not provide domestic specialists with a reliable and consistent method by which to stratify the risk of developing postoperative pneumonia in our population. OBJECTIVE: To develop a model for predicting postoperative pneumonia based on the identification of risk factors for its development. MATERIALS AND METHODS: A multicenter prospective study of 6844 patients over 18 years of age undergoing elective abdominal surgery. 30-day mortality and postoperative pneumonia were assessed. In the first phase of the study, a comparison was made between the pneumonia and non-pneumonia group of baseline patient data, as well as factors associated with surgery and anesthesia. At the second stage of the study, a logistic regression analysis was performed to assess the contribution of factors to the development of postoperative pneumonia. At the third stage of the study, a model for predicting postoperative pneumonia was built according to the data of multivariate logistic regression analysis. At the final stage, the obtained model was compared with the forecasting models of other authors found in the world literature. RESULTS: Pneumonia was detected in 53 patients (0.77 %). A lethal outcome was observed in 39 patients: in patients with pneumonia in 15 cases (28.3 %), and without pneumonia in 24 cases (0.4 %). Retrospectively, taking into account the obtained model, 933 patients were assigned to the high-risk group for developing pneumonia, the incidence of pneumonia was 4.5 %. In the low-risk group for developing pneumonia — 5911 patients, the incidence of pneumonia was 0.19 %. CONCLUSIONS: Eight independent variables associated with postoperative pneumonia were identified: duration of surgery, smoking, complete functional dependence, perioperative anemia requiring iron supplementation, intraoperative use of vasopressors, American Society of Anesthesiologists classification 3 functional class, use of bronchodilators for chronic obstructive pulmonary disease, and high operative risk. The postoperative pneumonia prediction model has excellent predictive value (AUROC = 0.904).
INTRODUCTION. Bronchopulmonary complications remain the leading cause of postoperative morbidity and prolong the patient’s hospital stay, increasing the cost of treatment. AIM. To study the effectiveness of using coordination training of the mechanics of respiratory movements in cardiac rehabilitation programs during breathing exercises. SEARCH STRATEGY. Through a literature search in the PubMed (Medline) and RISC search engines from January 2019 to December 2023, systematic reviews, meta-analyses and randomized controlled studies were selected of factors influencing the development of postoperative pulmonary complications after open heart surgery with cardiopulmonary bypass, as well as methods behavioral regulation and self-breathing training in cardiopulmonary rehabilitation to assess the effectiveness of reducing the number of pulmonary complications and their severity compared to conventional methods of respiratory cardiac rehabilitation. MAIN CONTENT. Based on an analysis of the literature, it has been suggested that after cardiac surgery, patients experience a decrease in coordination interactions in the work of the inspiratory muscles of the chest, which requires improvement in coordination abilities. The features of compensatory changes in the external respiration system after correction of the coordination interactions of the respiratory muscles in the process of respiratory-cardiac rehabilitation are illustrated, namely in increasing alveolar ventilation due to the improvement of the optimal ratios of thoracic and abdominal types of breathing, optimal synchronous and multiple ratios of the number of respiratory and motor cycles, its frequency and depth, higher efficiency of the respiratory muscles. CONCLUSION. The research results indicate that after completing a course of coordination training, where they developed the skills and abilities to control their breathing, patients who underwent open heart surgery with artificial circulation had a lower severity and incidence of postoperative bronchopulmonary complications, improved blood oxygen saturation and increased tolerance to physical activity compared to traditional methods of physical therapy, while the most pronounced changes are observed under the influence of methods of behavioral regulation of breathing. The obtained results of changes in the function of external respiration make it possible to evaluate the impact of coordination training to control one’s breathing as beneficial for prevention and rehabilitation.
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