"Keli McGregor had the heart of a lion," the statement said.
McGregor's family says his "healthy heart was attacked by a rare virus which unfortunately infected the heart muscle." They say the infection caused lymphatic myocarditis, killing McGregor.
"In an unusual manifestation of a viral illness, this organism infiltrated his heart muscle and disrupted the electrical pathways that signal the heart to beat properly," the statement said. "The heart muscle may have recovered from the viral attack had these electrical pathways not been destroyed, but the muscle may have been permanently weakened and destined for eventual heart failure."
The McGregor family says the infection likely occurred in the last week of the Rockies' president's life, causing flu-like symptoms.
"Just as a healthy brain can be infected with viral meningitis, a healthy heart can be infected with viral myocarditis," the McGregor family stated. "Fortunately, the vast majority of viral illnesses do not damage the heart or the brain."
McGregor's family says he was an advocate of physical and spiritual health and had his heart checked regularly.
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