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Emergency Medicine International
Volume 2014 (2014), Article ID 312189, 5 pages
http://dx.doi.org/10.1155/2014/312189
Research Article

Physiological-Social Scores in Predicting Outcomes of Prehospital Internal Patients

1School of Nursing and Allied Medical Sciences, Semnan University of Medical Sciences, Semnan, Iran
2Department of Health Services Management, School of Health Management and Information Sciences, Iran University of Medical Sciences, Tehran, Iran
3School of Health Management and Information Sciences, Iran University of Medical Sciences, No. 6, Rashid Yasemi Street, Vali-e-asr Avenue, Tehran 1995614111, Iran
4Emergency Department, 7th Tir Hospital, Iran University of Medical Sciences, Tehran, Iran

Received 27 February 2014; Accepted 12 August 2014; Published 14 September 2014

Academic Editor: Harold K. Simon

Copyright © 2014 Abbasali Ebrahimian et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The physiological-social modified early warning score system is a newly developed instrument for the identification of patients at risk. The aim of this study was to investigate the feasibility of using the physiological-social modified early warning score system for the identification of patients that needed prehospital emergency care. This prospective cohort study was conducted with 2157 patients. This instrument was used as a measure to detect critical illness in patients hospitalised in internal wards. Judgment by an emergency medicine specialist was used as a measure of standard. Data were analyzed by using receiver operating characteristics curves and the area under the curve with 95% confidence interval. The mean score of the physiological-social modified early warning score system was 2.71 ± 3.55. Moreover, 97.6% patients with the score ≥ 4 needed prehospital emergency services. The area under receiver operating characteristic curve was 0.738 (95% CI = 0.708–0.767). Emergency medical staffs can use PMEWS ≥ 4 to identify those patients hospitalised in the internal ward as at risk patients. The physiological-social modified early warning score system is suggested to be used for decision-making of emergency staff about internal patients’ wards in EMS situations.