METHOD FOR DIAGNOSING HEMODYNAMIC DISORDERS AND DISORDERS IN OXYGEN SYSTEM TRANSPORT IN PATIENT ORGANISM Russian patent published in 2005 - IPC

FIELD: medicine.

SUBSTANCE: method involves recording mean arterial blood pressure and cardiac index, displaying patient systemic hemodynamic status in real time mode as point of system hemodynamic status represented in coordinate system having its vertical axis as mean arterial blood pressure and horizontal one as cardiac index. Plot area is divided into nine quadrants by drawing lines in parallel to the axes at the level of upper and lower values of cardiac index norm and mean arterial blood pressure and two curves are drawn in the coordinate system to restrict normal value zone of total balance of volemia and inotropy using formula LVMWI±20%= 0.0144(ABP_m-PAJP)CI, where 0.0144 is the pressure transformation coefficient (mm of Mercury column) and volume (l) into kg*m; LVMWI is the left ventricle minute work index; 20% is the LVMWI scattering due to physiologic parameter measurement errors; PAJP is the pulmonary artery jamming pressure; CI is the cardia index; ABP_m is the mean arterial blood pressure. Two straight lines are drawn on the plot making peripheral blood vessel resistance norm value boundary using a formula of PBVRI±20%=79.96(ABP_m-CVP)/CI, where PBVRI is the peripheral blood vessel resistance index; 20% is the PBVRI scattering due to physiologic parameter measurement errors; CVP is the central venous pressure. Parameters of hemodynamic and systemic transport are superposed on the plot by means of abscissa line available on the plot to which the second coordinate axis is added and arterial blood oxygen content is scaled in a way that the normal arterial blood pressure repartition line and arterial blood oxygen content limit repartition line coincide. Two curves restricting normal oxygen delivery index value zone depending on various cardiac index values using a formula D0₂I=CaO₂*CI*10, where D0₂I is the oxygen delivery index, CaO₂ is the arterial blood oxygen content. Graphic presentation as systemic oxygen transport point which position corresponds to patient oxygen delivery index. Complex diagnosis of hemodynamic state and oxygen transport is determined by interpreting systemic hemodynamic status point position on the plot and systemic oxygen transport point position relative to normal value zones of peripheral blood vessel resistance index and normal values of oxygen transport index.

EFFECT: simultaneous estimation of hemodynamic and oxygen transport condition.

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