Featured Research

from universities, journals, and other organizations

CPR: More Compressions, Fewer Interruptions Lead To Higher Cardiac Arrest Survival

Date:
May 7, 2009
Source:
American Heart Association
Summary:
Survival rates for sudden cardiac arrest patients increased when professional rescuers focused on minimizing interruptions to chest compressions during CPR. Compression rate was increased to 50 compressions followed by two breaths. Rescuers delayed other interventions, such as intubation and IVs, until enough compressions had been given.

Survival rates from out-of-hospital sudden cardiac arrest almost doubled when professional rescuers using cardiopulmonary resuscitation (CPR) gave better chest compressions and minimized interruptions to them, according to research reported in Circulation: Journal of the American Heart Association.

“It’s a back-to-basics message. Even with professional rescuers, starting IVs and delivering medications can take a back seat to good quality chest compressions,” said Alex G. Garza, M.D., M.P.H., lead author of the study and associate professor of emergency medicine at the Washington Hospital Center and Georgetown University School of Medicine in Washington, D.C.

Garza’s study tracked results from changes in resuscitation protocols implemented by the Kansas City Emergency Medical Services (EMS) in 2006. The Kansas City EMS put the highest priority on hands-on time to provide chest compressions with limited interruptions. Rescuers performed 50 chest compressions before pausing to provide two breaths. (American Heart Association guidelines call for 30 compressions followed by two breaths.) Other changes included the rescuers delaying intubating the patient and administering medications.

Overall survival from out-of-hospital cardiac arrest increased from 7.5 percent to 13.9 percent after the EMS department made the changes to its resuscitation practices.

Comparing the 36 months prior to the protocol shift with the 12 months afterwards, the researchers also found:

  • Of patients whose cardiac arrest was witnessed by bystanders and who were initially in ventricular fibrillation, the success of resuscitation in restoring a heartbeat and getting the patient to the hospital alive improved from 37.8 percent (54 of 143) to 59.6 percent (34 of 57 patients).
  • Of patients whose cardiac arrest was witnessed by bystanders and who were in ventricular fibrillation, survival to hospital discharge rose from 22.4 percent (32 of 143) to 43.9 percent (25 of 57).
  • Of the 25 discharged patients, 88 percent scored well on measures of brain function.

“It takes five to seven chest compressions to raise the pressure enough to begin driving blood into the heart tissue,” Garza said. “If you stop too often to provide a couple of breaths, then you haven’t helped the heart much and you have to start building pressure all over again.”

Nearly 300,000 sudden cardiac arrest (SCA) victims are treated by EMS in the United States each year, according to the American Heart Association. SCA is an abrupt loss of heart function; it usually occurs after the heart’s electrical impulses become rapid or erratic, preventing the heart from effectively pumping blood.

“In that five- to 10-minute period after an SCA, a lot of evidence shows that if you do chest compressions to keep blood going to the heart muscle, defibrillation is far more likely to work,” Garza said.

Co-authors are Matthew C. Gratton, M.D.; Joseph A. Salomone, M.D.; Daniel Lindholm, E.M.T.P, M.I.C.T.; James McElroy, E.M.T.P., M.I.C.T.; and Rex Archer, M.D., M.P.H.


Story Source:

The above story is based on materials provided by American Heart Association. Note: Materials may be edited for content and length.


Cite This Page:

American Heart Association. "CPR: More Compressions, Fewer Interruptions Lead To Higher Cardiac Arrest Survival." ScienceDaily. ScienceDaily, 7 May 2009. <www.sciencedaily.com/releases/2009/05/090504161629.htm>.
American Heart Association. (2009, May 7). CPR: More Compressions, Fewer Interruptions Lead To Higher Cardiac Arrest Survival. ScienceDaily. Retrieved August 27, 2014 from www.sciencedaily.com/releases/2009/05/090504161629.htm
American Heart Association. "CPR: More Compressions, Fewer Interruptions Lead To Higher Cardiac Arrest Survival." ScienceDaily. www.sciencedaily.com/releases/2009/05/090504161629.htm (accessed August 27, 2014).

Share This




More Health & Medicine News

Wednesday, August 27, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Predicting Heart Transplant Rejection With a Blood Test

Predicting Heart Transplant Rejection With a Blood Test

Ivanhoe (Aug. 27, 2014) Now a new approach to rejection of donor organs could change the way doctors predict transplant rejection…without expensive, invasive procedures. Video provided by Ivanhoe
Powered by NewsLook.com
Better Braces That Vibrate

Better Braces That Vibrate

Ivanhoe (Aug. 27, 2014) The length of time you have to keep your braces on could be cut in half thanks to a new device that speeds up the process. Video provided by Ivanhoe
Powered by NewsLook.com
Smartphone App Tracks Your Heart Rate

Smartphone App Tracks Your Heart Rate

Ivanhoe (Aug. 27, 2014) A new app that can track your heart rate 24/7 is available for download in your app store and its convenience could save your life. Video provided by Ivanhoe
Powered by NewsLook.com
Stroke in Young Adults

Stroke in Young Adults

Ivanhoe (Aug. 27, 2014) A stroke can happen at any time and affect anyone regardless of age. This mother chose to give her son independence and continue to live a normal life after he had a stroke at 18 years old. Video provided by Ivanhoe
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins