Drop that inferiority complex - the average bystander can match the average EMT

Drop that inferiority complex - the average bystander can match the average EMT

Advanced Rescuer- versus Citizen-Witnessed Cardiac Arrest: Is There a Difference in Outcome? 
[Note from Bob: for those with busy schedules, the short answer is 'No']

Posted online on September 13, 2010. (doi:10.3109/10903127.2010.514089)

From the Department of Emergency Medicine, Harbor–UCLA Medical Center, Torrance, California (JTN, AHK, AMH); the Los Angeles Biomedical Research Institute at Harbor–UCLA Medical Center, Torrance, California (JTN, AHK); and the David Geffen School of Medicine at UCLA, Los Angeles, California (JTN, AHK). Revision received June 7, 2010; accepted for publication June 11, 2010.


Presented in part at the 2010 National Association of EMS Physicians annual meeting, Phoenix, Arizona, January 2010.

None of the authors have any conflicts of interests with other people or organizations that could inappropriately influence this work. There were no study sponsors.

Address correspondence and reprint requests to: James T. Niemann, MD, Department of Emergency Medicine, Harbor–UCLA Medical Center, 1000 West Carson Street, Box 21, Torrance, CA 90509. e-mail: jniemann [at] emedharbor [dot] edu

Abstract

Background. Substantial financial and human resources are invested in training and maintaining advanced life support (ALS) skills of paramedics who are deployed to the field in response to out-of-hospital cardiac arrest. It would be expected that patients who experience cardiac arrest in the presence of a trained health care practitioner, such as a paramedic, have better outcomes.Objective. To compare the rates of return of spontaneous circulation (ROSC), survival to hospital admission (SHA), and survival to hospital discharge (SHD) between paramedic-witnessed out-of-hospital cardiac arrest vs. citizen-witnessed out-of-hospital cardiac arrest. Methods. In this retrospective cohort study, the records of all out-of-hospital nontraumatic cardiac arrest patients presenting to a municipal teaching hospital from November 1, 1994, through June 30, 2008, were reviewed. The age, gender, race, rhythm on paramedic arrival, presence of bystander cardiopulmonary resuscitation (CPR), whether it was a witnessed arrest and, if witnessed, whether it was a paramedic-witnessed arrest, site of the arrest, and the rate of SHD were noted. A univariate odds ratio was computed to describe the association between paramedic-witnessed out-of-hospital cardiac arrest vs.citizen-witnessed out-of-hospital cardiac arrest and SHD. A multivariable logistic regression analysis was also performed, controlling for age, gender, arrest rhythm, bystander CPR, and site of arrest. Results. Of the total cohort of 1,294 out-of-hospital cardiac arrests, 750 (52.6%) were either paramedic-witnessed (154/750 = 20.5%) or citizen-witnessed (596/750 = 79.5%). Among the witnessed cardiac arrests, overall the SHD was 53 of 750 (7.1%). On univariate analysis, the ROSC, SHA, or SHD rates were not statistically significantly different between paramedic- and citizen-witnessed arrests. Even after multivariable adjustment, the ROSC, SHA, and SHD rates were not significantly different between paramedic- and citizen-witnessed arrests. Conclusions. Among our study population of out-of-hospital cardiac arrest victims, paramedic-witnessed arrests did not appear to have improved survival rates when compared with citizen-witnessed arrests. Key words:cardiac arrest; cardiopulmonary resuscitation; advanced life support; basic life support

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