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多普勒超声心动图升主动脉血流速度能有效评价局部心肌缺血、梗塞或运动负荷所致的左室功能变化。除了心肌缺血范围,缺血所致的心率和主动脉压变化可能也是多普勒超声心动图指标的决定因素。为此,本文探讨上述因素对升主动脉血流速度的影响。方法:八条杂种犬,静脉麻醉后人工呼吸,ECG 监护,每小时血气分析一次。股动
Doppler echocardiography ascending aorta blood flow velocity can effectively evaluate the left ventricular function changes caused by local myocardial ischemia, infarction or exercise load. In addition to the extent of myocardial ischemia, changes in heart rate and aortic pressure due to ischemia may also be determinants of Doppler echocardiographic parameters. To this end, this article explores the above factors on the ascending aorta blood flow velocity. Methods: Eight mongrel dogs, artificial respiration after intravenous anesthesia, ECG monitoring, hourly blood gas analysis once. Stock move