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<p class="publishdate"><span property="dc:date" datatype="xsd:dateTime" content="2015-04-27T00:00:00-04:00" class="date-display-single">April 27, 2015</span></p><div class='syndicate'><h1>Storing Blood Before Transfusion</h1><div class="callout callout-with-border"><h3>At a Glance</h3>
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<li>Adults undergoing complex cardiac surgery had similar outcomes whether they received transfusions of red blood cells stored for 10 days or less, or for 21 days or more.</li>
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<li>The results suggest that there’s no advantage to only transfusing red blood cells stored for shorter periods for this surgery.</li>
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<source srcset="https://www.nih.gov/sites/default/files/styles/floated_media_breakpoint-large/public/news-events/research-matters/2015/blood-transfusion.jpg?itok=g0QUYJv7&timestamp=1430404701 1x" media="screen and (min-width: 960px)" />
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<source srcset="https://www.nih.gov/sites/default/files/styles/floated_media_breakpoint-medium/public/news-events/research-matters/2015/blood-transfusion.jpg?itok=N6Q6xnfA&timestamp=1430404701 1x" media="screen and (min-width: 800px)" />
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<source srcset="https://www.nih.gov/sites/default/files/styles/floated_media_breakpoint-medium-small/public/news-events/research-matters/2015/blood-transfusion.jpg?itok=mJ9vfypF&timestamp=1430404701 1x" media="screen and (min-width: 600px)" />
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<source srcset="https://www.nih.gov/sites/default/files/styles/floated_media_breakpoint-small/public/news-events/research-matters/2015/blood-transfusion.jpg?itok=oR9uVlqn&timestamp=1430404701 1x" media="screen and (min-width: 480px)" />
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<source srcset="https://www.nih.gov/sites/default/files/styles/floated_media_breakpoint-tiny/public/news-events/research-matters/2015/blood-transfusion.jpg?itok=Jz2KdGyu&timestamp=1430404701 1x" media="screen and (min-width: 0)" />
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<img src="https://www.nih.gov/sites/default/files/styles/floated_media_breakpoint-medium/public/news-events/research-matters/2015/blood-transfusion.jpg?itok=N6Q6xnfA&timestamp=1430404701" alt="Woman in hospital bed getting blood transfusion" title="blood transfusion" />
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</picture><span class="caption">Past studies into how long red blood cells can be safely stored before transfusion have had differing results.</span><span class="credit">Jochen Sands/Digital Vision/Thinkstock</span></div>
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</div><p>Red blood cells transport oxygen throughout the body. During major surgeries, patients often need transfusions of red blood cells to replace lost blood. In the United States, the cells may be stored for up to 42 days — although the average age at the time of transfusion is currently 18 days. Red blood cells go through many changes while in storage that may decrease their ability to carry oxygen. It remains unclear whether these changes affect the health of patients given transfusions. This question is especially important for cardiac surgery patients because their hearts may be temporarily weakened by their procedures.</p>
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<div>
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<p>The Red-Cell Storage Duration Study (RECESS) was designed to examine this issue. The trial was conducted at more than 2 dozen U.S. hospitals from January 2010 to January 2014. It was funded by NIH’s National Heart, Lung, and Blood Institute (NHLBI).</p>
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<p>The researchers randomly split more than 1,000 complex cardiac surgery patients with an average age of 71 years into 2 groups. The short-term storage group received transfusions of red blood cells that had been stored for 10 days or less. The long-term storage group received cells stored for 21 days or more based on the standard of care, which is to transfuse the oldest stored blood units first in order to use them before their expiration dates.</p>
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<p>To track changes in patient health, the researchers used a measure called MODS (Multiple Organ Dysfunction Score). This scores the health of 6 different organ systems: lung, kidney, liver, cardiovascular (heart and blood vessels), blood, and neurologic (brain and nerves). The results were published on April 9, 2015, in the <em>New England Journal of Medicine</em>.</p>
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<p>The average change in MODS score from before surgery to 7 days or 28 days post-surgery did not differ between the 2 groups. There also were no differences in the frequency of post-surgery complications and deaths. This suggests that changing standard practice to transfusing only red blood cells stored for short periods would not benefit patients undergoing complex cardiac surgery.</p>
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<p>The study did find that the long-term storage group experienced more complications related to liver function, leading to a larger change in that component of the MODS score. However, this was due to increased levels of bilirubin, a substance created when the liver breaks down red blood cells. The result wasn’t surprising, because longer storage durations can make some red blood cells more fragile, causing them to break down more easily. This elevated bilirubin didn’t harm patients’ clinical outcomes.</p>
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<p>“These findings are reassuring because they do not support the need to modify transfusion practices in adult patients undergoing complex cardiac surgery,” says Dr. Keith Hoots of NHLBI. “In particular, there does not appear to be something gained by only transfusing red blood products stored for 10 days or less.”</p>
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<p>Most of the blood transfused during the study had been stored for less than 35 days, so it’s still unknown whether blood stored for 35–42 days would be equally safe to use in these patients. Future studies will also need to examine whether red-cell storage duration affects the health of patients who need transfusions for other reasons.</p>
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</div><h2 class="label-above">Related Links</h2><ul class="spaced print-urls"><li><a href="http://www.nih.gov/researchmatters/april2014/04142014transfusion.htm" target="_top">Blood Transfusions Linked to Infection Risk in Hospitals</a></li><li><a href="http://www.nih.gov/researchmatters/april2012/04022012surgery.htm" target="_top">Bypass Surgery Shows Advantage</a></li><li><a href="http://www.nhlbi.nih.gov/health/health-topics/topics/bt" target="_top">Blood Transfusion</a></li><li><a href="http://www.nhlbi.nih.gov/health/health-topics/topics/hs" target="_top">Heart Surgery</a></li><li><a href="https://clinicaltrials.gov/ct2/show/NCT00991341" target="_top">ClinicalTrials.gov RECESS page</a></li></ul><p class="footnote"><strong class="label-inline">References: </strong><a href="http://www.ncbi.nlm.nih.gov/pubmed/25853746"> Effects of Red-Cell Storage Duration on Patients Undergoing Cardiac Surgery.</a> Steiner ME, Ness PM, Assmann SF, Triulzi DJ, Sloan SR, Delaney M, Granger S, Bennett-Guerrero E, Blajchman MA, Scavo V, Carson JL, Levy JH, Whitman G, D'Andrea P, Pulkrabek S, Ortel TL, Bornikova L, Raife T, Puca KE, Kaufman RM, Nuttall GA, Young PP, Youssef S, Engelman R, Greilich PE, Miles R, Josephson CD, Bracey A, Cooke R, McCullough J, Hunsaker R, Uhl L, McFarland JG, Park Y, Cushing MM, Klodell CT, Karanam R, Roberts PR, Dyke C, Hod EA, Stowell CP. <em>N Engl J Med</em>. 2015 Apr 9;372(15). Doi: 10.1056/NEJMoa1414219. PMID: 25853746.</p><p class="footnote"><strong class="label-inline">Funding: </strong>NIH’s National Heart, Lung, and Blood Institute.</p>
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<p><a href="https://www.nih.gov/news-events/nih-research-matters/research-context-can-we-slow-aging">Research in Context: Can we slow aging?</a></p>
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|
||
<p><a href="https://www.nih.gov/news-events/nih-research-matters/brain-changes-observed-during-pregnancy">Brain changes observed during pregnancy</a></p>
|
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|
||
<p><a href="https://www.nih.gov/news-events/nih-research-matters/research-context-detecting-cancer">Research in Context: Detecting cancer</a></p>
|
||
|
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<p><a href="https://www.nih.gov/news-events/nih-research-matters/risk-future-burden-dementia-united-states">Risk and future burden of dementia in the United States </a></p>
|
||
|
||
<p><a href="https://www.nih.gov/news-events/nih-research-matters/complete-wiring-map-adult-fruit-fly-brain">Complete wiring map of an adult fruit fly brain</a></p>
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<h3 class="block__title">About NIH Research Matters</h3>
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<p><strong>Editor:</strong> Harrison Wein, Ph.D.</p>
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<p><strong>Assistant Editors:</strong> Vicki Contie and Brian Doctrow, Ph.D.</p>
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<p><strong><em>NIH Research Matters </em></strong>is a weekly update of NIH research highlights reviewed by NIH’s experts. It's published by the <a href="/institutes-nih/nih-office-director/office-communications-public-liaison">Office of Communications and Public Liaison</a> in the <a href="/institutes-nih/nih-office-director">NIH Office of the Director</a>.</p>
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<p>ISSN 2375-9593</p>
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