title: Quality of chest compressions during compression-only CPR: a comparative analysis following the 2005 and 2010 American Heart Association guidelines.
abstract: OBJECTIVE
  The latest guidelines both increased the requirements of chest compression rate and depth during cardiopulmonary resuscitation (CPR), which may make it more difficult for the rescuer to provide high-quality chest compression. In this study, we investigated the quality of chest compressions during compression-only CPR under the latest 2010 American Heart Association (AHA) guidelines (AHA 2010) and its effect on rescuer fatigue.
  
  
  METHODS
  Eighty-six undergraduate volunteers were randomly assigned to perform CPR according to the 2005 AHA guidelines (AHA 2005) or AHA 2010. After the training course and theoretical examination of basic life support, eight min of compression-only CPR performance was assessed. The quality of chest compressions including rate and depth of compression was analyzed. The rescuer fatigue was evaluated by the changes of heart rate and blood lactate, and rating of perceived exertion.
  
  
  RESULTS
  Thirty-nine participants in the AHA 2005 group and 42 participants in the AHA 2010 group completed the study. Significantly greater mean chest compression depth and compression rate were both achieved in the AHA 2010 group than in the AHA 2005 group. And significantly greater rescuer fatigue was observed in the AHA 2010 group. In addition, the female in the AHA 2010 group could perform the compression rate required by the guidelines, however, significantly shallower compression depth and greater rescuer fatigue were observed when compared to the male.
  
  
  CONCLUSIONS
  The quality of chest compressions was significantly improved following the 2010 AHA guidelines, however, it's more difficult for the rescuer to meet the guidelines due to the increased fatigue of rescuer.
authors.affiliation: Department of Emergency Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China; Institute of Cardiopulmonary Cerebral Resuscitation, Sun Yat-sen University, Guangzhou, China. Electronic address: yangzhengfei@vip.163.com.
authors.forename: Zhengfei
authors.initials: Z
authors.lastname: Yang
authors.affiliation: Institute of Cardiopulmonary Cerebral Resuscitation, Sun Yat-sen University, Guangzhou, China; Department of Emergency Medicine, Taiping People's Hospital, Medical School of Jinan University, Dongguan, China. Electronic address: lh12818@163.com.
authors.forename: Heng
authors.initials: H
authors.lastname: Li
authors.affiliation: Department of Emergency Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China; Institute of Cardiopulmonary Cerebral Resuscitation, Sun Yat-sen University, Guangzhou, China. Electronic address: dryutao@yeah.net.
authors.forename: Tao
authors.initials: T
authors.lastname: Yu
authors.affiliation: Institute of Cardiopulmonary Cerebral Resuscitation, Sun Yat-sen University, Guangzhou, China; Department of Emergency Medicine, Taiping People's Hospital, Medical School of Jinan University, Dongguan, China. Electronic address: dghmccw@163.com.
authors.forename: Changwei
authors.initials: C
authors.lastname: Chen
authors.affiliation: Department of Emergency Medicine, Yuyao People's Hospital, Medical School of Ningbo University, Ningbo, China. Electronic address: jeff.xu11@gmail.com.
authors.forename: Jiefeng
authors.initials: J
authors.lastname: Xu
authors.affiliation: Department of Emergency Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China; Institute of Cardiopulmonary Cerebral Resuscitation, Sun Yat-sen University, Guangzhou, China.
authors.forename: Yueyong
authors.initials: Y
authors.lastname: Chu
authors.affiliation: Department of Emergency Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China; Institute of Cardiopulmonary Cerebral Resuscitation, Sun Yat-sen University, Guangzhou, China. Electronic address: zhoutianen55@163.com.
authors.forename: Tianen
authors.initials: T
authors.lastname: Zhou
authors.affiliation: Department of Emergency Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China; Institute of Cardiopulmonary Cerebral Resuscitation, Sun Yat-sen University, Guangzhou, China. Electronic address: jly1964@vip.163.com.
authors.forename: Longyuan
authors.initials: L
authors.lastname: Jiang
authors.affiliation: Department of Emergency Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China; Institute of Cardiopulmonary Cerebral Resuscitation, Sun Yat-sen University, Guangzhou, China. Electronic address: syxhuangzitong@163.com.
authors.forename: Zitong
authors.initials: Z
authors.lastname: Huang
mesh_terms: D016887:Cardiopulmonary Resuscitation / Q000379:methods / Q000592:standards / Q000706:statistics & numerical data; D005260:Female; D006336:Heart Massage / Q000592:standards / Q000706:statistics & numerical data; D006339:Heart Rate; D006801:Humans; D019344:Lactic Acid / Q000097:blood; D008297:Male; D018763:Muscle Fatigue / Q000502:physiology; D017410:Practice Guidelines as Topic / Q000592:standards; D055815:Young Adult
chemical_list: D019344:Lactic Acid