EVALUATION OF THE RESULTS OF APPLYING AN ALGORITHM FOR SELECTION OF OPTIMAL SURGICAL ACCESS TO THE RETROPERITONEAL SPACE IN PATIENTS WITH DIFFERENT CONSTITUTIONAL PARAMETERS.
Authors: S.E. Suzdaltsev , R.A. Sulimanov , A.N. Tkachenko , A.S. Chernyh , O.V. Chauzova 
Published: July 2024

Relevance. Despite the rapid development and predominance of endovideosurgical techniques in the treatment of pathologies of organs and structures of the retroperitoneal space, the implementation of transperitoneal or retroperitoneal approaches for open surgical interventions remains a routine activity. Surgical treatment of various pathologies of retroperitoneal localization leads to the development of nonspecific life-threatening complications in 23.8% - 30% of clinical observations, and associated mortality - 7.2% - 11% of cases. Previously, our works presented the results of comparing the number of this type of complications when using laparotomy or retroperitoneal access, depending on the constitutional parameters of the patient. An assessment was made of the significance of the influence of constitutional parameters on the development of nonspecific life-threatening complications, on the basis of which an algorithm for choosing the optimal surgical access to the structures of the retroperitoneal space was developed [patent application No. 2024113445 dated May 17, 2024].
Purpose of the study. To evaluate the effectiveness of using an algorithm for selecting the optimal surgical approach in the surgical treatment of pathologies of organs and structures of retroperitoneal localization.
Materials and methods. Comparative analysis of the results of surgical treatment of patients with various surgical pathologies of the retroperitoneal space. Group I (n = 167), where the choice of surgical approach was determined using the “optimal surgical approach selection algorithm.” Group II (n = 284), in which the choice of access to the structures of the retroperitoneal space was not unified and was chosen without taking into account the constitutional parameters of the patient. In the perioperative period, the duration of surgical intervention, the volume of intraoperative blood loss, the number of days of stay in the intensive care unit, the time of postoperative respiratory support, the duration of postoperative intestinal paresis and the number of postoperative bed days were assessed. Criteria assessed in the postoperative period: development of myocardial infarction, acute cardiovascular failure, ARDS with the development of respiratory failure, acute kidney injury; cases of development of ischemic colitis and small intestinal obstruction, requiring repeated interventions, as well as the phenomenon of multiple organ failure. Wound complications included failure of retroperitoneal and laparotomy wounds, including eventration. To calculate quantitative characteristics, the median (Me) and percentiles (Q0.25 - Q0.75) were determined. Calculation of statistical significance between groups was performed using the Mann-Whitney U test**, for comparison of qualitative indicators - the Chi-square test* in IBM SPSS Statistics 25 software.
Results. In group I, compared with group II, there was a shorter surgical intervention time [140.8 vs 179.5] min, p = 0.031**, a smaller volume of intraoperative blood loss [280.4 vs 413.3] ml, p = 0.024* *; postoperative respiratory support [4.5 vs 8.5] hours, p = 0.041**; length of stay in the intensive care unit [1.8 vs 3.4] days, p = 0.021**; postoperative intestinal paresis [1.2 vs 4.8] days p = 0.024**; and duration of total postoperative hospital stay [9.1 vs 16.4] days p = 0.003**. The number of postoperative nonspecific life-threatening and wound complications in group I was 24 (14.4%), and in group II - 64 (22.5%) cases (p = 0.023*). The number of complications-related deaths in group I was 9 (5.4%); in group II - 32 (11.26%) cases (p = 0.037*).
Conclusion. The use of an algorithm for selecting the optimal surgical approach for surgical treatment of pathologies of organs and structures of the retroperitoneal localization of the access leads to a reduction in the number of nonspecific life-threatening complications to 14.4%, and associated deaths to 5.4%.