ABSTRACT
The present paper aims to investigate the relation between characteristic parameters of transesophageal photoelectric pulse wave in descending aorta and ambulatory artery blood pressure. The chests of ten adult experimental dogs were performed to take the photoelectric pulse wave of descending aorta transesophageally. The concurrent femoral artery invasive blood pressure was recorded simultaneously. Stepwise regression analysis method was used to study the correlation efficient between characteristic parameters of descending aorta pulse wave (H, h, h/H, g/H, At, s, H(1 + ts/td), k)and invasive artery blood pressure. The characteristic parameters, k and h/H (ratio: 90% and 80%) was proved that they had good correlation with systolic pressure; and k, H and s (ratio: 90%, 80% and 70%), had good correlation with diastolic pressure; while k and H (ratio: 90% for both) had good correlation with mean pressure. The mean values of multiple correlation coefficients of the selected characteristic parameters of descending aorta pulse wave with systolic pressure, diastolic pressure and mean pressure of femoral artery were 0.871, 0.900 and 0.856, respectively. The characteristic parameters of descending aorta pulse wave had specific correlation with systolic pressure, diastolic pressure and mean pressure.