METHOD FOR DETERMINING PRESENCE OF FUNCTIONAL RESERVE OF MYOCARDIUM IN PATIENTS AFFECTED WITH ACUTE MYOCARDIAL INFARCTION Russian patent published in 1997 - IPC

FIELD: medicine, cardiology. SUBSTANCE: following procedure is recommended: measurements are made of beat volume of left ventricle of patient's heart and of diastolic pressure in pulmonary artery in initial condition and after diastolic pressure rise by 3 mm Hg caused by administering controllable volume of dextrane into patient's pulmonary artery aperture. Calculations are made to determine functional reserve factor of patient's myocardium using following formula: , wherein BV₁ is beat volume of left ventricle in initial condition, BV₂ is beat volume of left ventricle after administering liquid and diastolic pressure rise by 3 mm Hg in pulmonary artery, D1d

is diastolic pressure value in pulmonary artery in initial condition, D2d is diastolic pressure value in pulmonary artery after administering liquid, and V is administered liquid volume. Cardiologist proceeds upon assumption that value of myocardium's functional reserve factor equal to, or greater than 1.0 serves as evidence of presence of functional reserve in patients suffering from acute myocardial infarction. Proposed method can be used at very early staves of developing myocardial infarction; it permits to timely establish presence or absence of functional reserve in patient's myocardium, to introduce appropriate adjustments into medicamentous therapy and to obtain reliable information permitting to return patients affected with acute myocardial infarction to active life in due time. EFFECT: improved efficiency of the method.