Pall system to detect blood bacteria given CE mark
Sep 5, 2006 - 4:00:00 AM
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The study presented to the ISBT tested the Pall eBDS on 662 red blood cell samples that had been inoculated separately with twelve different bacteria strains. Each sample was tested after 48 hours resulting in 100 percent detection of the contaminating bacteria. Pall, the leading global provider of filtration and other technologies to enhance the safety of the blood supply, conducted this study in response to the need to reduce the problem of bacterial contamination of blood components.
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By Pall Corporation,
[RxPG] East Hills, NY (September 5, 2006) -- Pall Corporation (NYSE: PLL) announced the CE marking of its eBDS System to detect bacterial contamination of red blood cells, the most widely transfused blood component. The Pall eBDS is a highly sensitive culture-based test routinely used by blood centers to detect bacterial contamination of platelets, the leading infectious cause of sickness and death from a transfusion. Results of a new study presented at the International Society of Blood Transfusion (ISBT) 2006 Congress show the efficacy of the system in also detecting bacteria that are commonly found as contaminants of red blood cells.
Since the availability of the Pall eBDS for detection of bacteria in platelets, there has been interest in applying the same technology to improve safety of red blood cells. Recent studies have documented sepsis and death caused by transfusion of contaminated red cells, with the bacteria Yersinia enterocolitica most often implicated. The U.S. FDA estimates that the rate of bacteria associated adverse reactions from Yersinia is one per 500,000 units of red cells, although they note that this rate may be underestimated. The U.S. Centers for Disease Control and Prevention (CDC) estimates bacterial contamination of red blood cells at one per million units whereas other nations have reported incidence as high as one in 65,000 units with a fatality rate of one in 104,400 units.
Despite the unknown actual number of cases, there is no question that transfusion of a contaminated red blood cell, especially if contaminated with gram-negative bacteria, is a rapid and catastrophic event with a quick onset of sepsis and greater than 60 percent mortality rate. Multiple studies have also documented a link between transfusion of red blood cells with nosocomial (hospital-acquired) infection. Critically ill patients who receive red cell transfusions are at increased risk of a nosocomial infection with a significant increase in mortality and/or length of stay in intensive care.
Adding bacterial detection of red cells along with platelets can have a significant impact on the safety of the blood supply, says Allan Ross, President, Pall Medical. The blood centers that employ the Pall eBDS for platelet testing can simply and readily use it to detect bacteria in red cells. This is a highly cost-effective way to help them ensure they can provide the safest blood for transfusion.
The Pall eBDS uses a novel approach to detection by measuring oxygen consumption as the marker for bacteria. If bacteria are present in the blood sample collected, an increasing amount of oxygen is consumed through the metabolic activity and proliferation of the bacteria during incubation, resulting in a measurable decrease in oxygen content.
The study presented to the ISBT tested the Pall eBDS on 662 red blood cell samples that had been inoculated separately with twelve different bacteria strains. Each sample was tested after 48 hours resulting in 100 percent detection of the contaminating bacteria. Pall, the leading global provider of filtration and other technologies to enhance the safety of the blood supply, conducted this study in response to the need to reduce the problem of bacterial contamination of blood components.
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