Navigation Links
Longer CPR Backfires for Certain Heart Patients: Study

By Amanda Gardner
HealthDay Reporter

WEDNESDAY, Aug. 31 (HealthDay News) -- More is not necessarily better when paramedics give cardiac arrest patients CPR before administering shocks to the heart, a new study finds.

On the contrary, providing CPR (cardiopulmonary resuscitation) for a longer period of time could actually harm certain patients.

"We found that extra CPR didn't help and, in fact, in some patients it was not a good thing. It would make it worse," said Dr. Ian Stiell, lead author of a paper published in the Sept. 1 issue of the New England Journal of Medicine. "Our study showed that there's no reason to do two minutes of CPR or to delay defibrillation."

But the study didn't address CPR delivered by a bystander so the message to the public is still the same.

"We absolutely believe that bystanders should start CPR right away," said Stiell, chair of emergency medicine at the University of Ottawa, Canada, and a senior scientist with the Ottawa Hospital Research Institute. "This trial doesn't address that."

Fewer than 10 percent of the 350,000 people each year in the United States and Canada who have a cardiac arrest out of the hospital survive the event.

Early CPR -- a combination of manual chest compressions and rescue breathing -- increases blood flow and is thought to put the heart in better shape to receive and respond to defibrillation, which restores a normal heart rhythm.

But how much CPR is optimal remains unclear. "We all knew that the earlier to defibrillation the better . . . but no one really knew how long that period of time was," said Dr. Joseph Feldman, chairman of emergency services at Hackensack University Medical Center in New Jersey.

In guidelines released in 2010, the American Heart Association (AHA) cited "inconsistent evidence" either for or against extended CPR and any delay in heart rhythm analysis.

In the largest study on cardiac arrest ever performed, involving nearly 10,000 patients, Stiell and his team divided emergency responders into two groups: those who would provide 30 to 60 seconds of initial CPR and those providing three minutes of CPR.

About 6 percent of patients in both groups lived to be discharged from the hospital.

But in the 10 percent of patients who had also received bystander CPR and were candidates for defibrillation, longer CPR from paramedics actually decreased the odds of survival.

"Before, the theory was to do a bunch of CPR to make the heart stronger and more responsive to the shock, but we didn't show that," said Stiell. "We showed that too much is not a good thing."

At this point, Stiell recommends that paramedics and firefighters deliver just one minute of CPR.

In a second CPR study published in the same journal issue, researchers report disappointing results for the "impedance threshold device" (ITD), which was designed to increase the beneficial effects of CPR.

The device increases blood flow to the heart while someone is administering CPR.

Nearly 9,000 patients in the United States and Canada were split into two groups, one of which received ITD treatment and another that got sham ITD treatment. The researchers, noting that about the same number in each group survived to hospital discharge, said the ITD did not significantly improve results.

More information

Visit the American Heart Association for help finding a CPR class.

SOURCE: Ian Stiell, M.D., senior scientist, Ottawa Hospital Research Institute and chair of emergency medicine, University of Ottawa; Joseph Feldman, M.D., chairman of emergency services, Hackensack University Medical Center, Hackensack, N.J.; Sept. 1, 2011, New England Journal of Medicine

Copyright©2010 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Patients are living longer with ICDs, but pacing impacts survival rates
2. Healthy Behaviors Will Help You Live Longer: CDC
3. Study suggests seeing a neurologist helps people with Parkinsons live longer
4. Hang out at the water cooler, live longer
5. Americans No Longer Outliving Europeans: Study
6. Writing DNR orders takes longer, death more likely when surrogate decision-maker involved
7. Exercise associated with longer survival after brain cancer diagnosis
8. Black heart attack patients wait longer for advanced treatment, University of Michigan study shows
9. Depressed, pregnant women receive inconsistent treatment, have longer hospital stays
10. College students sleep longer but drink more and get lower grades when classes start later
11. Following colorectal cancer surgery, longer delay before chemotherapy associated with worse survival
Post Your Comments:
Related Image:
Longer CPR Backfires for Certain Heart Patients: Study
(Date:6/26/2016)... , ... June 27, 2016 , ... Quality metrics are ... in many ways they remain in the eye of the beholder, according to experts ... publication of The American Journal of Managed Care. For the full issue, click ...
(Date:6/26/2016)... Carolina (PRWEB) , ... June 26, 2016 , ... ... of a new product that was developed to enhance the health of felines. The ... centuries. , The two main herbs in the PawPaws Cat Kidney Support ...
(Date:6/25/2016)... ... 25, 2016 , ... Experts from the American Institutes for ... Meeting June 26-28, 2016, at the Hynes Convention Center in Boston. , AIR ... care planning, healthcare costs and patient and family engagement. , AIR researchers will ...
(Date:6/25/2016)... ... ... "With 30 hand-drawn hand gesture animations, FCPX users can easily customize each ... Film Studios. , ProHand Cartoon’s package transforms over 1,300 hand-drawn pictures into hand ... select a ProHand generator and drag it above media or text in the Final ...
(Date:6/25/2016)... ... June 25, 2016 , ... Dr. Calvin ... injury. Recently, he has implemented orthobiologic procedures as a method for treating his ... of the first doctors to perform the treatment. Orthobiologics are substances that orthopaedic ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... Roche (SIX: RO, ROG; OTCQX: RHHBY) announced that it ... (procalcitonin) assay as a dedicated testing solution for people ... Roche is the first IVD company in the U.S ... assessment and management. PCT is a sepsis-specific ... blood can aid clinicians in assessing the risk of ...
(Date:6/23/2016)... 2016 Bracket , a leading clinical trial ... clinical outcomes platform, Bracket eCOA (SM) 6.0, at the ... – 30, 2016 in Philadelphia , Pennsylvania.  ... Assessment product of its kind to fully integrate with RTSM, ... eCOA 6.0 is a flexible platform for electronic clinical outcomes ...
(Date:6/23/2016)... Revolutionary technology includes multi-speaker listening to conquer ... in advanced audiology and hearing aid technology, has today ... world,s first internet connected hearing aid that opens up ...      (Photo: ) , ... , TwinLink™ - the first dual communication ...
Breaking Medicine Technology: