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Utilization of Warning Lights and Siren Based on Hospital Time-Critical Interventions

Published online by Cambridge University Press:  28 June 2012

Andreia Marques-Baptista ,
Pamela Ohman-Strickland ,
Kimberly T. Baldino ,
Michael Prasto  and
Mark A. Merlin
Andreia Marques-Baptista*
Affiliation:
Attending Emergency Medicine Physician, Emergency Medical Services Division, Albert Einstein Medical Center, Philadelphia, Pennsylvania, USA
Pamela Ohman-Strickland
Affiliation:
Associate Professor, Biostatistics, UMDNJ-Public Health, New Brunswick, New Jersey, USA
Kimberly T. Baldino
Affiliation:
UMDNJ-Robert Wood Johnson Medical School, Department of Medical Education, New Brunswick, New Jersey, USA
Michael Prasto
Affiliation:
UMDNJ-Robert Wood Johnson Medical School, Department of Medical Education, New Brunswick, New Jersey, USA
Mark A. Merlin
Affiliation:
Assistant Professor, Emergency Medicine and Pediatrics, Chair, NJ MICU Advisory Board, New Jersey Department of Health, UMDNJ-Robert Wood Johnson Medical School, New Brunswick, New Jersey, USA
*
University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School, 1 Robert Wood Johnson Place, Medical Education Building Room 104, New Brunswick, New Jersey 08901, USA E-mail: merlinma@umdnj.edu
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Abstract

Objective:

The objective of this study was to evaluate the time saved by usage of lights and siren (L&S) during emergency medical transport and measure the total number of time-critical hospital interventions gained by this time difference.

Methods:

A retrospective study was performed of all advanced life support (ALS) transports using lights and siren to this university emergency department during a three-week period. Consecutive times were measured for 112 transports and compared with measured transport times for a personal vehicle traveling the same day of the week and time of day without lights and siren. The time-critical hospital interventions are defined as procedures or treatments that could not be performed in the prehospital setting requiring a physician. The project assessed whether the patients received the hospital interventions within the average time saved using lights and siren transport.

Results:

The average difference in time with versus without L&S was -2.62 minutes (95% CI: -2.60− -2.63, paired t-test p <0.0001). The average transport time with L&S was 14.5 ±7.9 minutes (min) (1 standard deviation/minute (min), range = 1–36 min.). The average transport time without L&S was 17.1 ±8.3 min (range = 1−40 min). Of the 112 charts evaluated, five patients (4.5%) received time-critical hospital interventions. No patients received time-critical interventions within the time saved by utilizing lights and siren. Longer distances did not result in time saved with lights and siren.

Conclusions:

Limiting lights and siren use to the patients requiring hospital interventions will decrease the risks of injury and death, while adding the benefit of time saved in these critical patients.

Keywords

accidentsambulanceemergencylightsprehospitalsiren
Type
Original Research
Information
Prehospital and Disaster Medicine , Volume 25 , Issue 4 , August 2010 , pp. 335 - 339
Copyright
Copyright © World Association for Disaster and Emergency Medicine 2010

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