The green blood came as a bit of a shock to Dr. Alana Flexman and her colleagues when they tried to put an arterial line into a patient about to undergo surgery in Vancouver's St. Paul's Hospital.And the cover story:
The next day the lab reported it had detected sulfhemoglobin, a condition thought to be triggered by some medications."It's so rare that we don't have a perfect understanding how it happens, but some drug donates a sulfur group that binds to the hemoglobin molecule and prevents it from binding to oxygen," Flexman explains. "And that gives it the green colour."
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