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New CPR promises better results by compressing abdomen, not Chest
Date:9/5/2007

WEST LAFAYETTE, Ind. - A biomedical engineer at Purdue University has developed a new method to perform cardiopulmonary resuscitation that promises to be more effective than standard CPR because it increases nourishing blood flow through the heart by 25 percent over the current method.

A new technique is desperately needed because conventional CPR has a success rate of 5 percent to 10 percent, depending on how fast rescuers are able to respond and how well the procedure is performed. For every one minute of delay, the resuscitation rate decreases by 10 percent.

"In other words, at 10 minutes, the resuscitation is absolutely ineffective," said Leslie Geddes, Showalter Distinguished Professor Emeritus in Purdue's Weldon School of Biomedical Engineering. "Any medical procedure that had that low a success rate would be abandoned right away. But the alternative is not very good, either: Don't do CPR and the person is going to die."

Geddes has developed the first new CPR alternative, called "only rhythmic abdominal compression," or OAC-CPR, which works by pushing on the abdomen instead of the chest.

"There are major problems with standard CPR," Geddes said. "One is the risk of breaking ribs if you push too hard, but if you don't push hard you won't save the person. Another problem is the risk of transferring infection with mouth-to-mouth breathing."

The new CPR method eliminates both risks, Geddes said.

Findings will be detailed in a research paper appearing this month in the American Journal of Emergency Medicine, published by Elsevier Inc. The paper was authored by Geddes and his Purdue colleagues Ann E. Rundell, assistant professor of biomedical engineering, biomedical engineering doctoral student Aaron Lottes, and basic medical sciences graduate students Andre Kemeny and Michael Otlewski.

In standard chest-compression CPR, which has been in practice since the 1960s, the rescuer pushes o
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Contact: Emil Venere,
venere@purdue.edu
765-494-4709
Purdue University
Source:Eurekalert

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