METHOD FOR PREDICTING THE RISK OF POSTOPERATIVE ATRIAL FIBRILLATION DURING CORONARY BYPASS SURGERY AT THE PREOPERATIVE STAGE Russian patent published in 2021 - IPC A61B5/00 

FIELD: medicine, cardiovascular surgery in particular.

SUBSTANCE: invention relates to the field of medicine, namely to cardiovascular surgery and diagnostics. Determined is the value of age in years, and the indicator is estimated as equal to 0 at the age of 62 years and less, equal to 1 at the age of more than 62 years. The duration of coronary heart disease in months is determined. This indicator is estimated to be equal to 0 if the duration of coronary heart disease is 20 months or less, and equal to 1 if the duration of coronary heart disease is more than 20 months. The diameter of the left atrium is measured according to transthoracic echocardiography from the parasternal position in mm, then this indicator is evaluated as 0 with a value of the diameter of the left atrium of 41 mm or less and as 1 with a value of the diameter of the left atrium of more than 41 mm. The concentration of interleukin-6 in pg / ml of blood plasma before surgery is determined. After that, this indicator is evaluated as 0 with a value of interleukin-6 concentration of 10.56 pg/ml of blood plasma and less, and as 1 with a value of interleukin-6 concentration of more than 10.56 pg/ml of blood plasma. The concentration of superoxide dismutase in U / g of blood plasma before surgery is determined. This indicator is then evaluated as equal to 0 when the concentration of superoxide dismutase is 1075.18 U/g of blood plasma or less, or equal to 1 when the concentration of superoxide dismutase is more than 1075.18 U/g of blood plasma. Determined is the value of the concentration of reduced glutathione in mcM/g of hemoglobin of red blood cells in blood plasma before surgery. At the same time, this indicator is estimated to be equal to 0 if the concentration of reduced glutathione is more than 0.338 micromol/g of hemoglobin of red blood cells of blood plasma or equal to 1 if the concentration of reduced glutathione is 0.338 mcM/g of hemoglobin of red blood cells of blood plasma or less. The obtained data is used in the original mathematical formula for calculating the fa index. If the fa index is less than 0.5, the development of atrial fibrillation is not predicted. If the fa index is greater than or equal to 0.5, the patient is expected to have postoperative atrial fibrillation.

EFFECT: method allows predicting the risk of postoperative atrial fibrillation at the preoperative stage.

1 cl, 38 ex