METHOD FOR DETECTION OF DEFATIGATION IN OPERATORS Russian patent published in 2012 - IPC A61B5/452 A61B10/00 

FIELD: medicine.

SUBSTANCE: invention refers to occupational medicine. Individual state and performance values are estimated by four-score scale. Zero points if no symptoms observed, 1 point - the symptom is slightly manifested, 2 - moderately, 3 - significantly. A fatigue index (FI) is calculated as an arithmetic mean value. Electrocardiography is recorded to estimate cardiac rhythm variability, to calculate Am, Si, LF, heart rate. A modification coefficient (M) is calculated for each value by formula: wherein Ai is a value of one of the following signs, Amax and Amin are change ranges; : Am min 3.5, Am max - 98; Si min - 2, Si max - 950; LF min - 5, LF max - 90; heart rate min - 40, heart rate max -120; a vegetative regulation index (VRI) is calculated by formula: If the FI value is 0.6 points or less, and the VRI value is 10 or less, the state is considered to be optimal; the FI value 0.6 points or less and the VRI value more than 10 show the borderline state; the FI value more than 0.6 points and the VRI value is 10 or less means the satisfactory state; while the FI value exceeding 0.6 points and the VRI value exceeding 10 providing stating defatigation.

EFFECT: method extends the range of products for detecting defatigation in operators.

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