CPR guidelines from 2005 said only untrained people should use this method. Those was with training were told to use traditional CPR. But now the American Heart Association says everyone should use hands only CPR unless they feel strong about their ability to do rescue breathing.

2005年的心脏复苏术的治疗指南说只有没有接受过训练的人才应该使用这个方法，那些正在接受训练的人都被告之使用传统的心脏复苏术。但是美国心脏协会说每个人都应该只用手进行CPR，除非他们觉得自己有能力做援救人工呼吸。

The organization says the hands only method was just as effective as traditional CPR in several studies. Scieentists say there is enough oxygen remaining in a person's system for several minutes after breathing stops. They also say people need less oxygen when the heart is at arrest.

协会说在几项研究中只用手的方法和传统的CPR一样有效。科学家说当人们停止呼吸后人体系统内的氧气还可以维持几分钟。他们还说当心脏停止跳动时需要少许氧气。

The American Heart Association recommends hands only CPR for use on the adults who suddenly collapse. It says traditional CPR with accompanation a combination of breaths and compressions should be used for babies and children. Traditional CPR should also be used for adults who are found already uncouscious and not breathing normally. And it should be used for any victims of drowning or collapse from breathing problems.

美国心脏协会推荐只用手进行CPR用在忽然倒下的成年人身上。它说传统CPR和人工呼吸、压缩相结合的方法应该用在婴儿和小孩身上。传统的CPR通常应该用在没有直觉和没有呼吸的成年人身上。还可以用在溺水和因呼吸问题而倒下的病人身上。

These are all examples of cases where CPR with mouth to mouth breathing may be more helpful than hands only CPR. The American Heart Association says because there are many such cases, people should still learn CPR that includeds mouth to mouth.

这些都所有CPR加人工呼吸比只用手进行CPR有效的例子。美国心脏协会说因为有这么多这样的例子，人们应该还是学习包括人工呼吸的CPR