DIAGNOSTIC TECHNIQUE FOR VEGETATIVE DISORDERS IN PATIENTS WITH NEUROGENIC SYNCOPE Russian patent published in 2014 - IPC A61B5/452 

FIELD: medicine.

SUBSTANCE: cardiorhythmography is recorded during an active orthostatic test, and a heart rate variability (HRV) is analysed. During the active orthostatic test, the patient is placed in an initial horizontal position, then transferred into the vertical position, and then into the horizontal position again. If the amplitude of HF waves initially increases more than LF waves in the horizontal position by more than 30%, a prevailing parasympathetic effect is diagnosed. If the amplitude of HF and LF waves decreases after the patient is transferred into the vertical position by more than 30% of the values in the initial horizontal position, vegetative insufficiency is diagnosed. If the amplitude of HF waves decreases after the patient is transferred into the vertical position by more than 80% of the initial value in the horizontal position, a fast adjustment of the parasympathetic department to the changes is diagnosed. If the amplitude of VLF waves increases after the patient is transferred into the vertical position by more than 30% of the initial value in the horizontal position, activation of the supra-segmentary vegetative nervous system is diagnosed.

EFFECT: method provides more reliable diagnosing that is ensured by determining the mechanism of orthostatic test adaptation.

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