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| The cardiopulmonary resuscitation feedback system can improve the quality of chest compression
provided by emergency physicians |
| MA Lin-hao, GUAN Jun, CHEN Kun, Qu Jin-long, LIN Zhao-fen |
| Emergency ICU, Shanghai Changzheng Hospital, Shanghai 200003, China |
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Abstract Objective To assess the effect of a feedback device on the emergency physician’s quality of chest compression (CC) and their physiology response. Methods This is a prospective randomized crossover study of emergency physicians at a university- affiliated hospital. Eighteen participants performed CC on a mannequin. Firstly, they performed 2 minutes CC without feedback. After 15 seconds interval for pulse and ECG checking, they finished another 2 minutes CC. After at least 40 minutes rest, they repeated 4 minutes CC with feedback. Feedback during CPR was with the assistance of AED Plus (M-series, Zoll Medical, Chelmsford, MA, USA). The auditory prompted“Push Harder”if the measured compression depth (CD) was less than 5 cm or“Good Compression”if the measured compression depth was more than 5 cm. It also has a built-in metronome set to beep at 100 bpm so as to lead the compression rate (CR) at least 100 bpm. Based on the newest consensus statement from the American Heart Association, CR less than 100 bpm was recognized as compression too slow, while 100~120 bpm was good and more than 120 bpm was too fast; CD less than 5 cm was recognized as too shallow, while more than 5 cm as good. CR, CD, and the participants’heart rate, blood pressure and oxygen saturation before and after CC were all documented. Results Mean CR was significant higher (138±13 vs. 106±6，P<0.001) and mean CD was significant lower [(4.6±1.1)cm vs. (5.8±0.9) cm，P＝0.004)] when the partici⁃pants do CC without feedback. The excellent percentage was significant higher when participants finished CC with feedback (59.7% vs. 0.1%，P＝0.012). There was no statistical difference in the participants’heart rate, blood pressure and oxygen saturation with or without feedback devices. Conclusion The quality of cardiopulmonary resuscitation among emergency physicians needs to be improved. The quality of chest compression during cardiopulmonary resuscitation can be improved through the help of feedback devices without extra fatigue.
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Received: 25 August 2015
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Corresponding Authors:
GUAN Jun, E-mail: drguanjun@hotmail.com
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