METHOD FOR PREDICTING SEVERITY OF ISCHEMIC PROCESS IN HEART, BRAIN AND LOWER LIMBS Russian patent published in 2018 - IPC A61B5/00 A61B5/02 

FIELD: medicine.

SUBSTANCE: invention relates to medicine and can be used for diagnosis and therapy in neurology, cardiology, vascular surgery, disability examination, professional suitability. Method means determining such informative features S_j as the criterion for assessing the central hemodynamic system, time of segregation of critical ischemia of the lower limbs, intensity of pain syndrome in the heart (c), the brain (m), the lower limbs (k). For each informative characteristic of each organ under the study: i=c, m, k and state severity class r: r=n (normal); r=l (latent); r=p (reversible); r=k (critical) determined are membership functions μ_ri(S), which determine the confidence in the state severity classification for the organs under the study on the basis of S_j. Then the final severity of ischemia is calculated for each organ under the study. U_rc(j+1)=U_rc(j)+µ_rc(S_j+1)×(1-U_rc(j)), where U_rc(j) is the confidence in each severity: r=n, l, p, k, for the heart (s), when μ_rc(S_j) are calculated for the j-signs: j=1, …, 5. Herewith U_rc(1)=μ_rc(S₁). Confidence is determined in each severity for the heart. And the final severity of cardiac ischemia is determined by the maximum of the values of U_nc, U_lc, U_pc, U_kc. U_rm(j+1)=U_rm(j)+µ_rm(S_j+1)×(1-U_rm(j)), where U_rm(j) is the confidence in each severity: r=n, l, p, k, for the brain (m), when μ_rm(S_j) are calculated for the j-signs: j=1, …, 5. Herewith U_rm(1)=μ_rm(S₁). Confidence is determined in each severity for the brain. And the final severity of cerebral ischemia is determined by the maximum of the values of U_nm, U_lm, U_pm, U_km. U_rk(j+1)=U_rk(j)+µ_rk(S_j+1)×(1-U_rk(j)), where U_rk(j) is the confidence in each severity: r=n, l, p, k, for the lower limbs (k), when μ_rk(S_j) are calculated for the j-signs: j=1, …, 5. Herewith U_rk(1)=μ_rk(S₁). Confidence is established in each severity of the lower limbs, and the final severity of ischemia of the lower limbs is determined from the maximum of the values of U_nk, U_lk, U_pk, U_kk.

EFFECT: invention makes it possible to improve the quality of predicting the severity of the ischemic process of the heart, the brain and the lower limbs.

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