METHOD FOR DETERMINING CHRONIC HEPATIC INSUFFICIENCY STAGES Russian patent published in 2006 - IPC A61B3/10 

FIELD: medicine.

SUBSTANCE: method involves recording general electroretinogram and carrying out Doppler flowmetry examination of blood flow circulating in the extracranial internal vena cava and orbital artery segment. Coefficient of K_CHI is calculated from formula of K_CHI = 6.33 - 0.01BWA - 3.20COR OA, where K_CHI is the chronic hepatic insufficiency coefficient in conditional units; BWA is the b-wave amplitude on the general electroretinogram in mcW; COR OA is the ophthalmic carotid ratio of the orbital artery determined on basis of Doppler flowmetry examination data. Chronic hepatic insufficiency stage is determined by interpreting the K_CHI value in a way that K_CHI value being 2.0 to 2.5 corresponds to chronic hepatic insufficiency I stage; 2.6 to 2.9 corresponds to chronic hepatic insufficiency II stage; 3.0 to 3.3 corresponds to chronic hepatic insufficiency III stage; K_CHI value being ≥3.4, chronic hepatic insufficiency IV stage is diagnosed. K_CHI ≤ 1.9 c.u is observed in healthy people and in nephrologic patients manifesting no chronic hepatic insufficiency signs.

EFFECT: high accuracy of diagnosis.

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