In the article, "hemovigilance survey of pathogen-reduced blood components in the warsaw region in the 2009 to 2013 period", a study evaluated data from 2007-2013 of adverse events reported to the authority before and after implementation of mirasol in 2009.Apheresis platelet and plasma products were collected using trima.None of the products had undergone mirasol treatment.Adverse events reported: 113 (85 + 28) transfusion reactions as a result of receiving platelets (not treated with mirasol) 33 transfusion reactions as a result of receiving platelets (not treated with mirasol).Anxiety, chills, fever, itching, nausea, numbness around the mouth, rash 47 (26 + 21) transfusion reactions as a result of receiving plasma (not treated with mirasol) 10 transfusion reactions as a result of receiving plasma (not treated with mirasol).Chill, fever, rash, numbness around the mouth.It is not specified in the article if medical intervention was necessary for any of these events.Specific details regarding the patients that experienced adverse events, such as patient information and outcome, were not included in the article, therefore, this report is being provided as a summary of these events.The disposable set is not available for return because it was discarded by the customer.
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This report is being filed to provide additional information in b.5, e1, h6 & h10.Investigation: per the article, in 2009 the mirasol pathogen reduction technology (prt) was introduced to the routine blood component p roduction of the regional blood transfusion center in warsaw (rbtcw).The goal of this study was to investigate the safety of mirasol treated blood components.The accumulated passive hemovigilance data of mirasol-treated blood components collected at the rbtcw are presented and compared to historical and contemporary data.Furthermore, active hemovigilance data collected from patients with different hematologic disorders transfused with mirasol-treated or untreated blood components at the institute of hematology and transfusion medicine (ihtm) are presented and discussed.Leukoreduced pcs were produced from whole blood donation by pooling of five buffy coats in plasma using a whole blood processing system (atreus and orbisac, terumo bct, zaventem, belgium) since 2005 or by apheresis (trima accel device, terumo bct) since 2000.All pcs were stored in plasma for up to 5 days at 22oc on a platelet (plt) agitator.Ffp was separated from whole blood donation within 8 hours of collection and immediately blast-frozen to -30oc.Quarantine ffp (q-ffp) is ffp that can be released from quarantine only when the donor returns to the blood center and tests repeatedly negative for the transfusion-relevant viruses hcv, hiv-1/2, and hbv within an interval of 4 months.Cryodepleted ffp is the resulting plasma after centrifugation of thawed ffp and separation of the precipitate (cryoprecipitate).Blood components were treated with the mirasol prt system according to the manufacturer¿s instructions for use.Passive hemovigilance at the rbtcw the overall ar reporting rate after the implementation of m-pcs has been maintained at 0.39%, similar to the historical value of a 0.43% ar rate (p=0.47) reported for the period encompassing the years 2007 and 2008, before mirasol introduction at the rbtcw (table 1).Moreover, rates of ars observed during the period 2011 to 2012 after transfusion of mirasol-treated and untreated pcs were not significantly different (p=0.35).The rate of ar after transfusion of m-ffp was 0.05% and compares to 0.04% for the earlier period (2007-2008; p=0.29).In the period 2011 to 2012 there was no significant difference in rates of ar between treated and untreated ffp (p=0.66).Whereas one ar of grade iii was reported after transfusion of untreated ffp in this period, only mild reactions have been reported after transfusion of m-ffp (data not shown).In conclusion, no differences in rates of ar after transfusion of mirasol-treated and untreated components have been observed, when compared to both historical data before introduction of the mirasol technology and contemporary data (period 2011-2012).Active hemovigilance at the ihtm in 2011 the ihtm received the first m-pc from the rbtcw.In the period encompassing 2011 through 2013, a total of 12,558 pcs were transfused to patients in this hospital.All ars observed after transfusion of m-pcs were grade i severity and hence mild.The rates of ar were significantly different after transfusion of mirasol-treated or untreated pcs (0.33 and 0.70%, respectively; p=0.0037).Although a lower rate was observed in the mirasol-treated cohort, the nature of the symptoms of ars were quite similar in both groups (table 2).In 2010 the ihtm received the first m-ffp from rbtcw.In the 2010 to 2013 period 12,397 units of therapeutic plasma, including q-ffp, cryodepleted ffp, and m-ffp, were transfused to patients hospitalized in the ihtm.Out of a total of 1,855 m-ffp units transfused at the ihtm to seven patients with acquired ttp, only one allergic reaction was observed in one patient.This patient also demonstrated the same reaction outcome in a subsequent transfusion with q-ffp.The seven patients with congenital ttp were transfused with 874 units of m-ffp.One patient in this group showed signs of dyspnea and rash after transfusion of m-ffp.The treatment was switched to q-ffp without further ars.The same patient received transfusion 1 month later with an additional 20 m-ffp units and showed no reaction to these components, suggesting that the first ar was not related to the mirasol treatment.In a total of 104 patients transfused with 3929 units of m-ffp, five ars were observed and no causal relationship could be established between the mirasol treatment and these reactions.The summarized data on ars in patients treated with ffp (mirasol treated or untreated) between 2010 and 2013 are presented in table 3 for comparison.The rates of ars were not significantly different after transfusion of m-ffp and untreated ffp (0.13 and 0.12%, p=0.89).At the ihtm the adverse events (reactions) observed after transfusion of treated and untreated pcs were not different.All events were of grade i (e.G., chills) and a causality relationship with the mirasol treatment was considered unlikely.There was, however, a significant difference in rates of ars in the two groups, these being more frequent after transfusion of untreated components.It is worth noting here that both components are composed of plts stored in plasma, so the reduction of ar rates in the group of mirasol-treated components cannot be explained by a decrease of plasma protein content with the adoption of plt additive solution.7 lower rates of ars with mirasol treated components may be linked to the significant reduction of white blood cell (wbc) replication, cytokine production by residual wbcs and alloimmunization that has been shown in in vitro and animal studies.According to the aabb circular of information for the use of human blood and blood components (revised 2017).Febrile nonhemolytic reaction is typically manifested by a temperature elevation of >1c or 2f occurring during or within 4 hours after a transfusion and in the absence of any other pyrexic stimulus or active warming.Febrile reactions may occur in less than 1% of transfusion of leukocyte-reduced red cell components and about 5% of leukocyte-reduced apheresis platelet components.Febrile reactions occur more frequently in patients receiving non-leukocyte-reduced components and those previously alloimunized by transfusion or pregnancy.Antipyretics usually provide effective symptomatic relief.Patients who experience repeated, severe febrile reactions may benefit from receiving leukocyte-reduced components.If these reactions are caused by cytokines in the component, prestorage leukocyte reduction may be beneficial.Anaphylactic reactions characterized by hypotension, tachycardia, nausea, vomiting and/or diarrhea, abdominal pain, severe dyspnea, pulmonary and/or laryngeal edema, and bronchospasm and/or laryngospasm, are rare (<10/100,000 transfused units) but dangerous complications requiring immediate treatment with epinephrine.While these reactions have been reported in iga-deficient patients with anti-iga antibodies and patients with haptoglobin deficiency, most reactions are idiosyncratic and not associated with a specific serum protein deficiency, polymorphism, or identifiable cause.The customer did not provide the lot number pertaining to this event, therefore a device history record (dhr) search could not be conducted for this specific incident.All lots must meet acceptance criteria before release.Investigation is in process.A follow up report will be provided.
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