WASHINGTON (AP) -- A pair of studies are raising concerns about stored blood.
The research shows much of the banked blood given to millions of people every year may lack a component vital for it to deliver oxygen to the tissues.
The component is nitric oxide, which helps keep blood vessels open. The reports say it begins breaking down as soon as blood goes into storage.
In recent years, doctors have become increasingly concerned about levels of heart attack and stroke in patients receiving transfusions. The new findings may help explain that.
One possible solution would be to add nitric oxide to stored blood, but clinical trials would have to be conducted first.
The studies are in this week's online edition of Proceedings of the National Academy of Sciences.
(Copyright 2007 by The Associated Press. All Rights Reserved.)
To comment, the following rules must be followed:
Comments may be monitored for inappropriate content, but the station is under no legal obligation to do so.
If you believe a comment violates the above rules, please use the Flagging Tool to alert a Moderator.
Flagging does not guarantee removal.
Multiple violations may result in account suspension.
Decisions to suspend or unsuspend accounts are made by Station Moderators.
Links require admin approval before posting.
Questions may be sent to firstname.lastname@example.org. Please provide detailed information.
Viewers with disabilities can get assistance accessing this station's FCC Public Inspection File by contacting the station with the information listed below. Questions or concerns relating to the accessibility of the FCC's online public file system should be directed to the FCC at 888-225-5322, 888-835-5322 (TTY), or email@example.com.