Navigation Links
New Method Boosts Cardiac Arrest Survival

Emergency crews focus on uninterrupted chest compression, experts say

TUESDAY, March 11 (HealthDay News) -- Cardiac arrest outside of the hospital can quickly turn deadly, but a new method of restarting stalled hearts might boost people's chances of survival, researchers say.

The overall survival rate for people given the technique -- called minimally interrupted cardiac resuscitation (MIRC) -- was 9.1 percent, compared to 3.8 percent of those who got standard emergency measures, according to the report in the March 12 issue of the Journal of the American Medical Association.

And in a subgroup of people who experienced both cardiac arrest and the chaotic heartbeat called ventricular fibrillation, survival rose from about 12 percent before MIRC to 28.4 percent after, the researchers said

Current guidelines call for people who have cardiac arrest to receive an electric shock and periodic chest compressions to get their heart beating again. MIRC's innovation is that it emphasizes near-constant chest compression.

"The technique minimizes all interruption of chest compression, and maximizes the time when chest compressions are being given," said study author Dr. Bentley J. Bobrow, an assistant professor of emergency medicine at the Mayo Clinic in Scottsdale, Ariz. "Patients get pre-shock and post-shock chest depression, and also [the drug] epinephrine," he said.

The blood flow produced by standard chest compression is simply not enough to provide sufficient blood to the heart and the brain, Bobrow explained. In fact, national guidelines issued last year emphasized chest compression over rescue breathing, recommending two breaths for every 30 chest compressions, effectively doubling the number of recommended compressions.

The new study, done in two Arizona cities, included 2,460 people who experienced cardiac arrest outside of the hospital -- 1,799 of whom got treatment before emergency personnel were trained in MIRC.

Only 69 of those pre-MIRC patients survived, the researchers noted. In contrast, 60 of the 661 people given MIRC for cardiac arrest survived.

"One of the really novel things was that this didn't cost anything," Bobrow said. "Usually with a new treatment, cost is an issue. Here, we were really prioritizing how emergency medicine people push on the chest. There is very little cost outside of training."

But the effort needed to train people in the new technique should not be underestimated, said Dr. Mary Ann Peberdy, an associate professor of internal medicine and emergency medicine at Virginia Commonwealth University, in Richmond.

"What the group in Arizona was able to do in orchestrating these complex changes, which are significantly different from the rules drilled into people, was impressive," said Peberdy, who co-authored a related editorial in the journal.

The new study is only the second large trial of MIRC to be reported in the medical literature, she said. Another trial, also conducted in Arizona, found similar results two years ago, Peberdy said.

This latest study "is just a first step," Bobrow stressed. "We are constantly reassessing how we are doing with this protocol. We have to keep on modifying our techniques."

The study shows that "changes in the complicated EMS system are possible," Peberdy added. "People are going to have to look at the science themselves, and decide whether to change the protocol for patients who suffer cardiac arrest inside the hospital as well as outside the hospital."

Virginia Commonwealth has been using a version of MIRC for several years, she said, emphasizing "less interruptions of chest compression and better chest compression. It has improved our neurologically sound clinical survival," meaning that more people live with less brain damage.

More information

There's more on cardiac arrest and its warning signs at the American Heart Association.

SOURCES: Bentley J. Bobrow, M.D., assistant professor, emergency medicine, Mayo Clinic, Scottsdale, Ariz; Mary Ann Peberdy, M.D., associate professor, internal medicine and emergency medicine, Virginia Commonwealth University, Richmond; March 12, 2008, Journal of the American Medical Association

Copyright©2008 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Stanford study highlights cost-effective method of lowering heart disease risks
2. Different method of evaluating the urinary tract system reduces radiation dose
3. Report on patients access to cancer drugs uses flawed methods to reached flawed conclusions
4. A classic method for modeling skin cancer is featured in Cold Spring Harbor Protocols
5. Researcher developing new method for hearing loss assessment
6. Medicare Prescription Drug Benefit, Nonprofit Hospitals, Ambulatory Surgery Centers, Statistical Methods, and Pay-For-Performance Highlighted In the Latest INQUIRY Journal
7. GPS-like technology helps pinpoint best methods for moving injured players
8. New Seminar Series from Activator Methods Teaches Doctors a Unique Approach to Improving Nations Chiropractic Care: Focus on the Patients
9. Less invasive lymph node biopsy method could spare thousands unnecessary operations
10. 454 Sequencing(TM): Science Paper Describes a Novel, Highly Efficient Method of Sequencing Ancient DNA; Sequences the Mitochondria of 10 Individual Mammoths to Prove It
11. Manchester researchers announce new methods of beating breast cancer
Post Your Comments:
Related Image:
New Method Boosts Cardiac Arrest Survival 
(Date:6/27/2016)... ... June 27, 2016 , ... A revolution is underway. ... transport experience for the millions of people who require these medical transport services ... industry through the use of technology. Now, SmartEMS has put forth an industry-changing ...
(Date:6/26/2016)... ... June 27, 2016 , ... Quality metrics are proliferating ... many ways they remain in the eye of the beholder, according to experts who ... of The American Journal of Managed Care. For the full issue, click here ...
(Date:6/26/2016)... ... June 26, 2016 , ... Pixel Film Studios Released ProSlice Levels, ... editors can give their videos a whole new perspective by using the title ... Pixel Film Studios. , ProSlice Levels contains over 30 Different presets to choose ...
(Date:6/26/2016)... ... June 26, 2016 , ... Brent Kasmer, a legally blind and certified personal trainer is helping ... fitness app. The fitness app plans to fix the two major problems leading the fitness ... size fits all type program , They don’t eliminate all the reasons people ...
(Date:6/25/2016)... ... June 25, 2016 , ... ... and applications at AcademyHealth’s Annual Research Meeting June 26-28, 2016, at the Hynes ... important health care topics including advance care planning, healthcare costs and patient and ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... -- MedSource announced today that it has selected Datatrial,s ... choice.  This latest decision demonstrates MedSource,s commitment to ... by offering a state-of-the-art electronic data capture (EDC) ... the EDC platform of choice in exchange for ... long been a preferred EDC platform by our ...
(Date:6/23/2016)... , June 23, 2016 Research ... "Pharmaceutical Excipients Market by Type (Organic Chemical (Sugar, Petrochemical, ... (Oral, Topical, Coating, Parenteral) - Global Forecast to 2021" ... The global pharmaceutical excipients market is ... a CAGR of 6.1% in the forecast period 2016 ...
(Date:6/23/2016)... 23, 2016 Research and Markets has ... Market Analysis 2016 - Forecast to 2022" report to ... report contains up to date financial data derived from varied ... major trends with potential impact on the market during the ... segmentation which comprises of sub markets, regional and country level ...
Breaking Medicine Technology: