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New software helps with CPR; Paramedic develops Web site to tell whether procedure is working
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St. Louis Post-Dispatch (MCT) - Doug Woods wondered whether people taking his CPR classes were really getting it.
Highlights
McClatchy Newspapers (www.mctdirect.com)
4/6/2009 (1 decade ago)
Published in Health
As a paramedic, he knew what it felt like to give someone the life-saving technique. He told those he trained about the tired wrists, fatigued arms and aching backs that come with correctly performing cardio-pulmonary resuscitation.
But he could never be sure they would apply the right amount of pressure and get their timing right if faced with a real emergency.
About two years ago, Woods called the manufacturer of the mannequins he was using to see if they could build one that measured the depth and frequency of chest compressions.
"I just figured technology must have come along far enough by now to be able to do something like this," Woods said.
The Denmark-based company turned to a Los-Angeles based software company for advice. Computer software engineers in Australia and Hong Kong built a program to track a person's chest compressions, using the same technology as the popular video game "Guitar Hero."
Woods developed a Web site that can tell someone whether they are performing CPR correctly as they pump the chest of the interactive mannequin. He also developed a presentation and written exam that can be taken over the Internet at any time.
The test, combined with scoring at least a 70 percent effective rate on the mannequin, qualifies someone to become CPR certified.
Woods, who spent seven years as a flight paramedic and now works for the Big River Ambulance District, recently introduced the technology to the freshman class at Hillsboro High School.
One by one, students knelt beside the mannequin and watched a computer screen to see if their compressions were working.
Each compression produced a color-coded bar on the screen. Red was too slow. Orange was too fast. Green was good.
Maria Wiseman, 14, of Festus, Mo., scored the highest with a 95 percent effective rate.
"It's a little more realistic," she said. "It made me feel more conscious as opposed to just the doll."
Woods says it builds "muscle memory."
But he also admits he's not the first to think of such technology. Computerized mannequins have been on the market for years. One, called Resusci Anne, produced a reading similar to an EKG that measured chest compressions.
But Woods said his invention is the first to provide real-time results that allow people to feel the difference between an effective chest compression or one that fails to do the job.
Ultimately, he hopes the technology will make it easier and more affordable for schools, nonprofits and businesses to certify people in CPR. His approach shortens the typical four-hour course into about an hour and costs $5 to $25 a person as opposed to $75 or more.
He believes it's an investment in survival rates.
He points to cities such as Seattle, where people in cardiac arrest who receive CPR from bystanders have a 30 percent survival rate. There, CPR training is widespread and EMS response time is short, according to the American Heart Association.
In comparison, the association says survival rates drop to 1 to 2 percent in New York City, where fewer victims receive CPR from bystanders and EMS response time is longer.
Woods told the Hillsboro freshmen they would likely have to give someone CPR for about six minutes before paramedics arrive. Like most of her classmates, Mikala Torrence, 14, of De Soto, Mo., was winded and her wrists were red after performing just the five sets of 30 compressions required in class.
"It's a lot harder than I thought it would be," she said. "Keeping my timing was harder, but now I can actually say I can do it if it actually happens."
___
© 2009, St. Louis Post-Dispatch.
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