How to Do 'Hands-Only CPR' (1/2)

Cardiopulmonary resuscitation, or CPR, is help for a stopped heart. It increases the chances of survival and reduces the danger of brain damage. With traditional CPR, you push hard on the chest thirty times, then stop to give two breaths to force air into the lungs. You repeat the steps until the victim can get medical treatment.

But people may worry about getting sick from blowing into a stranger's mouth. Also, the training is easy to forget, especially in a crisis. And those without training may be afraid to do anything for fear they will do something wrong.

So now, the American Heart Association has simplified its guidelines and is calling for hands-only CPR. Here is how it works. A person has collapsed and is unconscious. The victim has lost color in the face and does not appear to be breathing. These are signs of cardiac arrest -- and this is the time to begin CPR.

Place your hands, one on top of the other, on the center of the chest. Push hard and fast. Aim for a rate of about one hundred presses in a minute. Chest compressions keep the blood flowing to the brain, heart and other organs.

参考译文：

心肺复苏术（CRP）有益于骤停的心脏。它增加了患者生还的机会并且降低了大脑损伤的危险。传统的CRP过程是，用力按压胸部30次。然后，停止按压，人工呼吸2次以使气体进入肺内。重复以上步骤直到患者获得医疗救助为止。

但是，人们可能会担心因向陌生人嘴里吹气而患病。而且，这些训练很容易忘记，尤其是在危机情况时。并且，那些没有经过训练的人可能因为怕做错事，而不愿意做。

目前，美国心脏病协会已经简化了治疗指南，该协会呼吁只用手进行CRP。下面就谈谈怎么做。一个人昏倒且失去意识。患者脸上已经失去血色而且没有呼吸。这些都是心脏骤停的迹象，这正是开始进行CPR的时候。

将一只手放在另一只手上叠交于患者胸部正中。迅速且有力的挤压。目标是使每分钟的按压次数达100次左右。胸腔压迫可以保持血液流入大脑、心脏以及其他器官。