Mayo Clinic Researcher Calls From Mount Everest

After eight days at high altitude, Mayo Clinic lead Mount Everest investigator Bruce Johnson is out of breath when he makes satellite phone calls to the U.S. "I'm calling from Mount Everest Base Camp," he said last week, apologizing for his labored breathing at an altitude of about 17,500 feet. The Mayo research team is studying biological data gleaned from North Face and National Geographic expedition members whose symptoms mimic patients with heart failure. The team expects to stay on the mountain another few days, perhaps turning around May 12.

Additional coverage: Pioneer Press