Objective To investigate the changes of left atrial function before and after Off-pump coronary artery bypass (OPCAB) using transthoracic echocardiography (TTE) and acoustic quantification (AQ).

目的应用经胸超声心动图(tte)声学定量技术(AQ)检测非体外循环冠状动脉搭桥术(OPCAB)前后左心房功能的变化。

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Balance of the balance disk is dynamic, the pump rotor in a balanced position for the axial pulse before and after.

平衡盘的平衡状态是动态的，泵的转子在某一平衡位置会前后作轴向脉动。

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Before installation on the suction and discharge line to clean, remove rust and dirt, especially welding pipe welding slag must be thoroughly cleared, to avoid killed after entering the pump.

安装前对吸入、排出管路要清理干净，去掉铁锈等脏物，特别是焊接管路的焊渣必须彻底清除，以免进入泵后咬死。

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Many spend hours a day at the pump before, during and after work.

CNN: Breastfeeding is intuitive and easy? No!