原材料引用（Materials ）
This is the VOA Special English Health Report.
Cardiopulmonary resuscitation, or CPR, can save the life of someone whose heart has stopped. The condition is called cardiac arrest. The heart stops pumping blood. The person stops breathing. Without lifesaving measures, the brain starts to die within four to six minutes.
CPR combines breathing into the victim's mouth and repeated presses on the chest. CPR keeps blood and oxygen flowing to the heart and brain.
However, a new Japanese study questions the usefulness of mouth-to-mouth breathing.
The study was published in the British medical magazine, The Lancet. Doctors in Tokyo led the research. It examined more than four thousand people who had suffered cardiac arrest. In all the cases, witnesses saw the event happen.
More than one thousand of the victims received some kind of medical assistance from witnesses. Seven hundred and twelve received CPR. Four hundred and thirty-nine received chest presses only. No mouth-to-mouth rescue breaths were given to them. The researchers say any kind of CPR improved chances of the patient's survival. But, they said those people treated with only chest presses suffered less brain damage.
Twenty-two percent survived with good brain ability. Only ten percent of the victims treated with traditional CPR survived with good brain ability.
The American Heart Association changed its guidelines for CPR chest presses in two thousand five. It said people should increase the number of chest presses from fifteen to thirty for every two breaths given.
Gordon Ewy is a heart doctor at the University of Arizona College of Medicine in Tucson. He wrote a report that appeared with the study. Doctor Ewy thinks the CPR guidelines should be changed again. He said the heart association should remove rescue breaths from the guidelines.
He argues that more witnesses to cardiac arrests would provide treatment if rescue breaths are not a part of CPR. He says this would save lives. Studies show that many people do not want to perform mouth-to-mouth breathing on a stranger for fear of getting a disease.
Cardiac arrest kills more than three hundred thousand people in the United States every year. The American Heart Association says about ninety-five percent of victims die before they get to a medical center.
And that's the VOA Special English Health Report, written by Caty Weaver. I’m Bob Doughty.
信息和事实（Facts ）
Cardiopulmonary Resuscitation 心肺复苏术
Cardiac arrest 心搏停止
感受与评价（Comments）
因今天凌晨2点才得知有晨读活动，立刻报名。本来6:30开始，6:20闹钟响我看了下没得到回复，等到6:30还没消息以为今天要错过了就接着睡。在6:52得到S回复说可以进群然后7点正式开始，而我在6:57被宝宝吵醒，哈哈，宝宝是我的福星呢。第一天的直播课竟然也没有错过，听到了S的声音。感觉他的英语要比中文好听，哈哈。
然后开始准备完成落下的预习任务，一是录音，这个不难，但真的跟原版语音语调相差很远，而且我的通常要快十几秒钟，与S的要求不符，只能硬着头皮接着录，就这样录了快十遍才差不多达到要求。
统计累计的练习小时数（Hours）
1小时
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