| 摘要 |
FIELD: medicine. ^ SUBSTANCE: method involves synchronously recording electrocardiogram in standard lead and pulse wave dopplerogram taken from M1 segment of medial cerebral artery using transducer of 1.7-2.5 MHz frequency and scanning speed of 50-100 mm/s. Delay time of rise onset is determined on dopplerogram relative to S-tooth peak or descending R-peak slope end on electrocardiogram. Pulse wave propagation speed on aorta-M1-segment part of the medial cerebral artery is calculated in cm/s from formula V=0.93*(S1+S2)/t, where 0.93 is the coefficient of measurement error on body surface of length of aorta-M1-segment of medial cerebral artery, S1 is the distance from sternal jugular fossa to mandible angle, S2 is the distance from mandible angle to point of intersection of the anterior auricle edge and upper edge of zygomatic arch in cm, t is the delay time in s. ^ EFFECT: wide range of functional applications. ^ 3 dwg, 2 tbl |
