目的：比较二维超声及三维彩色多普勒超声在心搏出量计算方面的准确性。
Objective: To evaluate the accuracy of two-dimensional and three-dimensional (3d) color Doppler echocardiography in cardiac stroke volume quantification.
耐力训练导致耗氧量和清除量增加，心脏搏出量和输出量增加，外周血管阻力下降。
Endurance training results in an increase in oxygen consumption and delivery. Stroke volume and cardiac output increase. Peripheral vascular resistance decreases.
持续的或慢性的心律失常，可能会减少心搏出量，降低血压，影响重要器官的血液灌注，并会加速心力衰竭。
Ongoing arrhythmia in some heart diseases can reduce the heart's ability to supply the body with blood and can lead to heart failure.
心输出量增加，心脏收缩加强能泵更多的血液，心搏量增加，左心室壁变厚(更多肌肉)，心脏对氧气的需要减少。
Increases Cardiac Output, stronger heart contractions pump more blood, increased stroke volume, thickens left ventricle wall (more muscular), decreases hearts' oxygen requirements.
动脉瘤弹性差，降低了心脏的每搏排出量并增大了残余心肌张力。
Such an aneurysm represents non-contractile tissue that reduces stroke volume and strains the remaining myocardium. The stasis of blood in the aneurysm predisposes to mural thrombosis.
以每搏心输出量减少、左室射血时间缩短为其损伤特点。
The time of ejecting blood was shortened significantly in the left ventricle.
结论：磁场可降低蟾蜍心肌收缩性能而导致每搏心输出量减少，对舒张功能影响不明显。
Conclusion: magnetic field may decrease the myocardial contractility of isolated toad heart and no obvious effect to the function of the myocardial relax.
结果表明，用线性回归模型计算的左室射血分数、每搏量、心输出量在较低心率时模拟数值较为可信，在较高心率时每搏量模拟数值不可靠。
It showed that the simulation results of LVEF, SV and CO were reliable at a low heart rate with linear regression model, but unreliable at a high heart rate.
脉象中除包括脉搏的跳动、心脏的心率、每搏输出量、血管弹性和外周阻力外，还可显示人体的生命信息。
Pulse conditions include beating of pulse, heart rate, output per beat, elasticity of blood vessels, and peripheral resistance. They are also indicative of life information of human body.
心排血指数（CI）及每搏输出量（SV）升高或下降不一致，但均接近正常范围。
The levels of CO, CI and SV increase or decrease were different, but all approached to normal range.
它受心脏每搏输出量、心率、外周阻力等多种因素的影响，并且随着这些因素的变化不断波动。
The pressure is determined by many factors including the force and cardiac output, heart rate, and the resistance of the arteries.
它受心脏每搏输出量、心率、外周阻力等多种因素的影响，并且随着这些因素的变化不断波动。
The pressure is determined by many factors including the force and cardiac output, heart rate, and the resistance of the arteries.
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