...丁网 、严重贫血、动静脉 瘘和嗜铬细胞瘤等，由于血容量过多或循环速度加快致回心血量增加， CO代偿性增加，心搏功(stroke work, SW)增加，但心肌的能量供给不 足，亦可引起左心衰竭。
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左室每搏功输出指数、右室每搏功输出指数明显下降。
Left ventricular stroke work index (LVSWI) and right ventricular stroke work index (RVSWI) were decreased significantly.
结果：正常心室有最适搏出功，总能量和收缩末势能最低而能量效率最高。
Results: The normal ventricle had optimal stroke work, minimal total energy and end systolic potential energy with maximal energy efficiency.
随着心功能减退，总能量和收缩末势能增大而搏出功保持稳定，能量效率下降。
Following heart function deterioration, the ventricular total energy and end systolic potential energy were increased, stroke work kept stable and energy efficiency was decreased.
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