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Uninterrupted chest-compressions key to survival in cardiac arrest outside hospital setting
Date:9/28/2009

DALLAS Sept. 29, 2009 Maximizing the proportion of time spent performing chest compressions during cardiopulmonary resuscitation (CPR) substantially improves survival in patients who suffer cardiac arrest outside a hospital setting, according to a multicenter clinical study that included UT Southwestern Medical Center.

The findings, available in today's issue of Circulation, come from the largest clinical investigation to evaluate the association between chest compressions by emergency medical service (EMS) providers before the first attempted defibrillation and survival to hospital discharge. Out-of-hospital cardiac arrest is a leading cause of premature death worldwide, and survival is often less than 5 percent.

One of the most important aspects of quality CPR is the proportion of time spent performing chest compressions, but EMS providers typically perform chest compressions only 50 percent of the total time spent on resuscitative efforts.

"It's a common problem, because rescuers are involved in so many other tasks checking for a pulse, starting intravenous therapy and giving ventilation, among other things," said Dr. Ahamed Idris, professor of emergency medicine at UT Southwestern and a pioneer in resuscitation research and CPR. Dr. Idris also is the principal investigator for the Dallas portion of the new study, conducted at seven clinical centers across North America.

"Compressions are being interrupted half of the time or more, and that has a detrimental effect on the survival of patients," Dr. Idris said. "This study reinforces that interrupting chest compressions has a bad effect on survival. It also provides a rationale for relatively simple changes to CPR training and practice, that if implemented are likely to improve survival."

Dallas-area paramedics and firefighters are being trained to begin CPR immediately and to administer uninterrupted chest compressions for two minutes before re-che
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Contact: Connie Piloto
connie.piloto@utsouthwestern.edu
214-648-3404
UT Southwestern Medical Center
Source:Eurekalert  

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