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 July 31, 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 July 31, 2014).

Share This




More Health & Medicine News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

House Republicans Vote to Sue Obama Over Healthcare Law

House Republicans Vote to Sue Obama Over Healthcare Law

Reuters - US Online Video (July 31, 2014) The Republican-led House of Representatives votes to sue President Obama, accusing him of overstepping his executive authority in making changes to the Affordable Care Act. Mana Rabiee reports. Video provided by Reuters
Powered by NewsLook.com
Despite Health Questions, E-Cigs Are Beneficial: Study

Despite Health Questions, E-Cigs Are Beneficial: Study

Newsy (July 31, 2014) Citing 81 previous studies, new research out of London suggests the benefits of smoking e-cigarettes instead of regular ones outweighs the risks. Video provided by Newsy
Powered by NewsLook.com
Dangerous Bacteria Kills One in Florida

Dangerous Bacteria Kills One in Florida

AP (July 31, 2014) Sarasota County, Florida health officials have issued a warning against eating raw oysters and exposing open wounds to coastal and inland waters after a dangerous bacteria killed one person and made another sick. (July 31) Video provided by AP
Powered by NewsLook.com
Health Insurers' Profits Slide

Health Insurers' Profits Slide

Reuters - Business Video Online (July 30, 2014) Obamacare-related costs were said to be behind the profit plunge at Wellpoint and Humana, but Wellpoint sees the new exchanges boosting its earnings for the full year. Fred Katayama reports. Video provided by Reuters
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