Reuss Christina S, Moreno Carlos A, Appleton Christopher P, Lester Steven J
Division of Cardiovascular Diseases, Mayo Clinic, Scottsdale, Arizona 85259, USA.
J Am Soc Echocardiogr. 2005 Dec;18(12):1343-8. doi: 10.1016/j.echo.2005.05.012.
Doppler tissue imaging variables were measured in 18 healthy men and women during supine bicycle stress exercise and upright exercise treadmill testing. From a color Doppler tissue imaging cineloop, tissue velocities in basal and mid segments of the standard 3 apical views during rest and peak exercise were assessed. Compared segments were adjusted for double product, and peak variables were compared using the paired t test. Peak systolic velocity and strain rate increased with both forms of exercise (P < .03). Time to compression-expansion crossover shortened in all segments with exercise and at peak exercise treadmill testing versus peak supine bicycle stress exercise (P < .03). Of all segments, 81% were analyzable for peak systolic velocity, 79% for strain rate. Doppler tissue imaging is a feasible tool for quantitatively assessing left ventricular response to supine and upright exercise.
在18名健康男性和女性进行仰卧位自行车应激运动和直立运动跑步机测试期间，测量了多普勒组织成像变量。从彩色多普勒组织成像电影环中，评估静息和运动峰值时标准3个心尖视图的基底段和中间段的组织速度。对比较节段进行双乘积校正，并使用配对t检验比较峰值变量。两种运动形式下，收缩期峰值速度和应变率均增加（P < 0.03）。与仰卧位自行车应激运动峰值相比，运动时以及运动跑步机测试峰值时，所有节段的压缩-扩张交叉时间均缩短（P < 0.03）。在所有节段中，81%可用于分析收缩期峰值速度，79%可用于分析应变率。多普勒组织成像是定量评估左心室对仰卧位和直立运动反应的可行工具。
