赤松 繁¹, 加川 憲作², 絲堺召 悦司¹, 荒川 迪生², 上松 治孝¹, 山本 道雄¹

Shigeru AKAMATSU¹, Kensaku KAGAWA², Etsuji TERAZAWA¹, Michio ARAKAWA², Harutaka UEMATSU¹, Michio YAMAMOTO¹

¹岐阜大学医学部麻酔科, ²岐阜大学医学部第二内科

¹Department of Anesthesiology, Gifu University School of Medicine, ²The Second Department of Internal Medicine, Gifu University School of Medicine

キーワード : Transesophageal Doppler echocardiography, Pulmonary venous flow, Diastolic function

This study was designed to characterize age-related changes in pulmonary venous flow dynamics. Under general anesthesia, 54 surgical patients with no history or physical evidence of cardiac disorders were studied with transesophageal Doppler echocardiography. Pulmonary venous flow was tri- or quadriphasic. The first wave, which was often biphasic in elderly patients, occurred during ventricular systole (S wave), the second wave occurred in diastole during the rapid ventricular filling phase of mitral flow (D wave), and the third wave was reverse flow toward the pulmonary vein during atrial contraction (A wave). The following variables were measured: peak flow velocity of each wave (PFVs, PFVd, PFVa), the ratio of PFVs to PFVd (S/D), the ratio of the area under the curve for the S wave to that for the D wave (S area/D area). We then examined the correlation between patients' age and each variable.
PFVd correlated with age (r=-0.56, pOur data suggest that age-related diastolic dysfunction of the left ventricle affects pulmonary venous flow dynamics.