Influence of simulated weightlessness on ventricular function with Tei indices in healthy adults by quantitative tissue velocity imaging
定量组织多普勒Tei指数评价模拟失重对健康成人心室功能的影响

Objective To assess the influence of simulated weightlessness on the ventricular function with Tei indices in the healthy adults by quantitative tissue velocity imaging(QTVI) with echocardiography. Methods Twelve young volunteers were chosen to simulate weightlessness condition by continuous 6 degree head down tilt bed rest. Echocardiography examinations were arranged at 10 minutes after start of the experiment on the 10th day and 20th,respectively in prostration at rest condition. Tissue Doppler figures we...