METHOD FOR PREDICTION OF RISK OF DEVELOPING PROLONGED PLEURAL EFFUSION AFTER ANATOMICAL LUNG RESECTIONS Russian patent published in 2025 - IPC A61B5/00 G01N33/48 A61B17/24 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to thoracic surgery. After anatomical resections of the lung, a neutrophil-lymphocyte index (NLI) is determined on 4-5th postoperative day, a quantitative value of leukocytes in the drainage fluid on 2nd postoperative day, quantitative value of leukocytes in the drainage fluid on 4th-5th postoperative day and the volume of the discharged pleural fluid on 4th-5th postoperative day. Thereafter, the position of each value on the corresponding horizontal axis of the nomograph is determined in accordance with figure 2. NLI value on 4-5th postoperative day corresponds to 0 to 40 points. Quantitative value of leukocytes in pleural fluid on 2nd postoperative day corresponds to 0 to 90 points. Quantitative value of leukocytes in pleural fluid on 4th-5th postoperative day corresponds to 0 to 100 points. Drainage volume of the recovered pleural fluid corresponds to 0 to 60 points. After determining the number of points for each criterion, all points are summed up. Derived value is then applied on the horizontal axis of the nomogram "total points" and the total score is used to determine the probability of developing a prolonged pleural effusion on the horizontal axis of the "probability of prolonged pleural effusion" of the nomogram according to figure 2. Increasing the total score increases the probability of lingering pleural effusion.

EFFECT: method enables predicting the development of a complication in the form of a prolonged pleural effusion along the drains after anatomical resection of the lung; it has high specificity and sensitivity.

1 cl, 1 ex, 3 dwg