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E-book Blood Transfusion
Each year more than 15 million units of whole blood are collected and 5 million patients are transfused with blood components in the United States. (Source: The 2011 National Blood Collection and Utilization Survey Report; 2011 is the most recent year for which data are available.) Each unit is generally divided into three components: red cells, platelets and plasma. Most of the red cells are transfused to patients undergoing surgical procedures. Patients with leukemia, lymphoma, myeloma, myelodysplastic syndromes and myeloproliferative neoplasms (blood cancers) frequently receive platelets and some red cells; they may require more blood components overall than surgical patients because their need is likely to continue over a period of weeks or longer. In addition, most patients who undergo marrow or blood stem cell transplantation will be transfused. The need for blood transfusions for patients with blood cancers never takes a holiday. Every day thousands of blood components are transfused to patients. Blood cannot be made artificially; thus, patients’ lives literally depend on volunteers who give blood on a regular basis. Volunteers have the option to donate platelets alone versus donating whole blood. As the population gets older and more sophisticated medical practices are developed, the need for blood component therapy will grow. In many areas of the country, blood centers have had difficulty keeping up with the need, and as a result there have been frequent shortages.
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