METHOD FOR PREDICTING LIKELIHOOD OF COMPLICATIONS IN EARLY POSTOPERATIVE PERIOD IN PATIENTS WHO HAVE UNDERGONE GASTRECTOMY FOR GASTRIC CANCER Russian patent published in 2023 - IPC A61B10/00 G01N33/48 

FIELD: surgery; oncology.

SUBSTANCE: invention can be used to predict the development of early postoperative complications in patients who have undergone gastrectomy for stomach cancer. Anamnestic and intraoperative parameters are assessed. The prediction coefficient is calculated using the formula: K_predict=0.7048+Х1*0.075+Х2*0.0074–Х3*0.0016+Х4*0.0717–Х5*0.0724+Х6*0.1919+Х7* 0.2833+Х8*0.0996–Х9*0.0117-Х10*0.1459+Х11*0.0024-Х12*0.0004+Х13*0.0587-Х14*0.0003, where Х1 - gender, male – 1, female – 0; X2 - age in the number of completed years at the time of surgery; X3 - duration of surgical intervention in minutes; X4 - splenectomy, not performed - 0, performed - 1; X5 - type of primary tumour according to Bormann classification, 1 - polypoid form, 2 - ulcerative form, 3 - ulcerative-infiltrative form, 4 - infiltrative form; X6 - depth of invasion of the primary tumour according to TNM classification: 1 – captures the submucosal layer; 2 – captures the muscle layer; 3 – involves the subserosal membrane without invasion into the visceral peritoneum or adjacent structures; 4 – extends to the visceral peritoneum; X7 - characteristics of regional lymph nodes according to the TNM classification: 0 - no metastases in regional lymph nodes, 1 - damage to no more than two regional lymph nodes, 2 - damage from 3 to 6 regional lymph nodes, 3 - damage to more than 6 regional lymph nodes; X8 - degree of tumour differentiation: 1 - well-differentiated adenocarcinoma, 2 - moderately differentiated adenocarcinoma, 3 - poorly differentiated adenocarcinoma, 4 - signet ring cell carcinoma; X9 - number of removed lymph nodes; X10 - stage of the tumour process according to the TNM classification: 1 - in situ, 2 - stage Ia, 3 - stage Ib, 4 - stage IIa, 5 - stage IIb, 6 - stage IIIa, 7 - stage IIIb, 8 - stage IV; X11 - the largest diameter of the primary tumour according to postoperative histological examination (mm); X12 - localization of the primary tumour: 1 - lower third of the stomach, 2 - upper or middle third of the stomach without damage to the greater curvature and/or posterior wall of the stomach, 3 - posterior wall of the stomach and/or greater curvature, 4 - damage to 2 parts of the stomach, 5 - subtotal damage; X13 - adhesive process of the abdominal cavity: 0 – no more than two adhesions, 1 – two or more tensile thin adhesions, 2 – the adhesive process covers the entire abdominal cavity; X14 - intraoperative blood loss in ml. If the coefficient for predicting the development of early postoperative complications does not exceed 1.297, the absence of postoperative complications is predicted; if the coefficient is more than 1.297, then the development of early postoperative complications is predicted.

EFFECT: method provides the opportunity to assess the likelihood of developing postoperative complications as soon as possible after completion of the operation, individually, for each patient by analysing anamnestic data and features of the surgical intervention.

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