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Journal of Trauma and Injury 2013;26(2):39-46.
Relationship of Mean Arterial Pressure with the Adverse Outcomes in Adult Blunt Trauma Patients: Cross-sectional Study
Seung Yong Cha, Yong Hwan Kim, Chong Kun Hong, Jun Ho Lee, Kwang Won Cho, Seong Youn Hwang, Kyoung Yul Lee, Younghwan Lee, Seong Hee Choi
1Department of Emergency Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea.
2Department of Emergency Medicine, Bundang Jesaeng General Hospital, Gyeonggi-do, Korea. schsfc@hanmail.net
3Department of Physical Education, Kyungnam University, Changwon, Korea.
4Department of Emergency Medicine, Hallym Sacred Heart Hospital, School of Medicine, Hallym University, Anyang, Korea.
5Department of Surgery, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea.
성인둔상환자에서 평균동맥압과 위해사건발생의 관련성:단면 조사 연구
차승용1, 김용환1, 홍종근2, 이준호1, 조광원1, 황성연1, 이경렬3, 이영환4, 최성희5
1성균관대학교 삼성창원병원 응급의학과, 2분당제생병원 응급의학과, 3경남대학교 체육교육과, 4한림대학교 성심병원 응급의학과, 5성균관대학교 삼성창원병원 외과
Received: 20 December 2012   • Revised: 18 February 2013   • Accepted: 17 April 2013
Abstract
PURPOSE
Non-invasive blood pressure measurement is widely used as a pre-hospital triage tool for blunt trauma patients. However, scant data exits for using the mean arterial pressure (MAP), compared to the systolic blood pressure, as a guiding index. The aim of this study was to determine the association between adverse outcomes and mean arterial pressure (MAP) and to exhibit the therapeutic range of the MAP in adult blunt trauma patients.
METHODS
The electronic medical records for all trauma patients in a single hospital from January 2010 to September 2012 were retrospectively reviewed. Patients below 17 years of age, patients with penetrating injuries, and patients with serious head trauma (injuries containing any skull fractures or any intracranial hemorrhages) were excluded. Adverse outcomes were defined as one of the following: death in the Emergency Department (ED), admission via operating theater, admission to the intensive care unit, transfer to another hospital for emergency surgery, or discharge as hopeless.
RESULTS
There were 14,537 patients who met entry criteria. Adverse outcomes occurred for MAPs in range from 90 to 120 mmHg. Adverse outcomes were found, after adjusting for confounding variables, to occur increasingly as the MAP declined below 90 mmHg or rose above 120 mmHg.
CONCLUSION
Not only lower but also higher mean arterial pressure is associated with increased adverse outcomes in adult blunt trauma patients. Thus, patients with a MAP above 120 mmHg should be considered as a special group requiring higher medical attention, just as those with a MAP below 90 mmHg are.
Key Words: Mean arterial pressure; Triage; Blunt injury


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