ChestCompressions:Most Important of CPR

Cardiopulmonaryresuscitation,or CPR,can save the life of someone whose heart has stopped .Thecondition is called cardiac arrest. The heart stops pumping blood. The

person stopsbreathing. Without lifesaving measures,the brain starts to die within four tosix minutes.CPR combines breathing into the victim's mouth and repeated presseson

thechest.______(46).

However,a newJapanese study questions the usefulness of mouth-to-mouth breathing. The studywas published in the British medical magazine,The Lancet. Doctors in

Tokyo led the re- search .It examined more than four thousandpeople who had suffered cardiac arrest. In all the cases,witnesses saw theevent happen.

More than onethousand of the victims received some kind of medical assistance from witnes-ses .Seven hundred and twelve received CPR.Four hundred and thirty-nine

received chest pres-ses only.______(47)The researchers say any kind of CPR improved chances of thepatient's survival. But,they said those people treated with only chest

presses sufferedless brain damage. Twenty-two percent survived with good brainability.______(48).

The American HeartAssociation changed its guidelines for CPR chest presses in 2005.

______(49)Gordon Ewyis a heart doctor at the University of Arizona College of Medicine in Tucson. He wrote a reportthat appeared with the study.Doctor Ewy thinks the

CPR guidelinesshould be changed again.He said the heart association should remove rescuebreaths from the guidelines. He argues that more witnesses to cardiac arrests

would providetreatment if rescue breaths are not a part of CPR. He says this would savelives______(50).

Cardiac arrest killsmore than 300,000 people in the United States every year. The American HeartAssociation says about ninety-five percent of victims die before they get to

a medical center.______(50)

A.Sofar,we have notknown exactly yet whether mouth-to-mouth breathing is really useless in CPR.

B. Only ten percentof the victims treated with traditional CPR survived with good brain a-bility.

C. CPR keeps bloodand oxygen flowing to the heart and brain.

D. His studies showthat many people do not want to perform mouth-to-mouth breathing on a strangerfor fear of getting a disease.

E. It said peopleshould increase the number of chest presses from fifteen to thirty for everytwo breaths given.