closed cardiac massage

例句：

1. 1. The closed cardiac massage technique is an effective way to treat heart failure.
   闭合心脏按摩技术是一种有效的治疗方法，用于治疗心力衰竭。
2. 2. During the closed cardiac massage, the patient's chest is pressed and rotated to improve blood flow.
   在闭合心脏按摩期间，患者胸部被按压并旋转，以改善血流。
3. 3. The closed cardiac massage was used as a last resort in treating severe heart conditions.
   在治疗严重心脏病时，闭合心脏按摩作为一种最后的手段被使用。