Philadelphia, UNITED STATES
To match Reuters Health story HEALTH-COOLINGTHERAPY/
Nurse researcher Marian Leary programs a meditherm controller during a body cooling for trauma patients demonstration at the Hospital of the University of Pennsylvania in Philadelphia, Pennsylvania, in this June 3, 2010 file photo. The vast majority of the 300,000 Americans who suffer cardiac arrest every year die. Doctors say those statistics could change, however, if more people had access to a procedure called therapeutic hypothermia -- cooling the body. As medical procedures go, it's among the simplest and it's also the only treatment proven to protect the brain after cardiac arrest. Since 2005, it's been a staple part of resuscitation guidelines, inspiring a newfound can-do attitude in a growing number of emergency physicians across the country. REUTERS/Tim Shaffer/File (UNITED STATES - Tags: HEALTH SCI TECH)