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Vox Sanguinis

Y Lin, R Cohen, C Armali, J Callum, C Cserti-Gazdewich, L Lieberman, J Pendergrast
BACKGROUND AND OBJECTIVES: Approaches to preventing transfusion-associated circulatory overload (TACO) include the use of diuretics. The purpose of this study was to determine how commonly diuretics are prescribed in patients receiving a red-blood-cell (RBC) transfusion. MATERIALS AND METHODS: This was a retrospective study of 200 adult inpatient RBC transfusion orders, 50 consecutive at each of four academic institutions. Only the first transfusion order for each patient was included...
March 8, 2018: Vox Sanguinis
J-P Sigle, B Mihm, R Suna, M Bargetzi
BACKGROUND: Daratumumab (DARA) causes non-specific results in indirect agglutination testing (IAT). Dithiothreitol (DTT) treatment of panel red blood cells (RBCs) abolishes DARA interference. The objective of our study was to extend stability of DTT-treated panel RBCs to 28 days through application of a commercially available panel RBC stabilizer. MATERIALS AND METHODS: Serological antigen typing and IAT using DARA sera and DARA plasma spiked with weakly reacting alloantibodies was performed up to 28 days after DTT treatment and stabilization...
March 7, 2018: Vox Sanguinis
Y Grégoire, M Germain, G Delage
BACKGROUND AND OBJECTIVES: Since 25 May 2010, all donors at our blood centre who tested false-positive for HIV, HBV, HCV or syphilis are eligible for re-entry after further testing. Donors who have a second false-positive screening test, either during qualification for or after re-entry, are deferred for life. This study reports on factors associated with the occurrence of such deferrals. MATERIALS AND METHODS: Rates of second false-positive results were compared by year of deferral, transmissible disease marker, gender, age, donor status (new or repeat) and testing platform (same or different) both at qualification for re-entry and afterwards...
March 6, 2018: Vox Sanguinis
U Gravemann, W Handke, C Sumian, I Alvarez, S Reichenberg, T H Müller, A Seltsam
BACKGROUND: Photodynamic treatment using methylene blue (MB) and visible light is in routine use for pathogen inactivation of human plasma in different countries. Ambient and product temperature conditions for human plasma during production may vary between production sites. The influence of different temperature conditions on virus inactivation capacity and plasma quality of the THERAFLEX MB-Plasma procedure was investigated in this study. METHODS: Plasma units equilibrated to 5 ± 2°C, room temperature (22 ± 2°C) or 30 ± 2°C were treated with MB/light and comparatively assessed for the inactivation capacity for three different viruses, concentrations of MB and its photoproducts, activity of various plasma coagulation factors and clotting time...
February 27, 2018: Vox Sanguinis
K Ogasawara, T Miyazaki, S Ito, R Yabe, M Uchikawa, T Enomoto, N Yokoya, Y Hori, M Kumamoto, S Watanabe, M Satake
Bm and A1 Bm phenotypes are the most frequent ABO variants in the Japanese population. The B antigen on Bm red blood cells is only detectable by adsorption and elution tests, and plasma B-transferase activity is usually detected at half or less levels compared with that of common B. Recently, a B allele lacking an erythroid cell-specific transcription enhancer in intron 1 of the ABO gene was identified from individuals with Bm and A1 Bm phenotypes, which could explain the unique serologic properties of Bm ...
February 23, 2018: Vox Sanguinis
F J Kranenburg, S A Willems, S Le Cessie, P J Marang-van de Mheen, J G van der Bom, M S Arbous
BACKGROUND AND OBJECTIVES: Most guidelines recommend a restrictive transfusion trigger of 7 g/dl. It is unclear whether this resulted in more uniform transfusion practices. The primary objective was to uncover the extent of variation in transfusion decisions within four scenarios of critically ill patients among critical care physicians in the Netherlands. MATERIALS AND METHODS: An online survey comprising four different hypothetical clinical scenarios was sent to all members of the Dutch Society of Intensive Care...
February 23, 2018: Vox Sanguinis
L Waters, M Cameron, M P Padula, D C Marks, L Johnson
Conventional storage of platelet concentrates limits their shelf life to between 5 and 7 days due to the risk of bacterial proliferation and the development of the platelet storage lesion. Cold storage and cryopreservation of platelets may facilitate extension of the shelf life to weeks and years, and may also provide the benefit of being more haemostatically effective than conventionally stored platelets. Further, treatment of platelet concentrates with pathogen inactivation systems reduces bacterial contamination and provides a safeguard against the risk of emerging and re-emerging pathogens...
February 14, 2018: Vox Sanguinis
C A Reynolds, K L Davison, N Andrews, P Patel, A Kitchen, S R Brailsford
BACKGROUND AND OBJECTIVES: The rate of confirmed hepatitis C virus (HCV) cases, in first-time donors, is much lower in 2015 than 20 years ago. We investigate reasons for the decline. MATERIALS AND METHODS: HCV rates were analysed by gender and birth cohort for 1996 to 2015 and ethnic group for 2006 to 2015. Variables for confirmed positive cases were compared for two ten-year periods (1996 to 2005 and 2006 to 2015) including genotyping data for 2006 to 2015. RESULTS: There were 2007 confirmed HCV cases identified between 1996 and 2015...
February 14, 2018: Vox Sanguinis
N O'Flaherty, I Ushiro-Lumb, L Pomeroy, S Ijaz, F Boland, C De Gascun, J Fitzgerald, J O'Riordan
Lookback was initiated upon notification of an acute HBV infection in a repeat Irish donor, 108 days post-donation. The donation screened non-reactive by individual-donation nucleic acid testing (ID-NAT) using the Procleix Ultrio Elite multiplex assay and again when the archived sample was retested, but the discriminatory assay for HBV was reactive. The immunocompromised recipient of the implicated red cell component was tested 110 days post-transfusion, revealing a HBV DNA viral load of 470 IU/ml. Genotype C2 sequences identical across two regions of the HBV genome were found in samples from the donor and recipient...
February 14, 2018: Vox Sanguinis
R Lynch, S Cohn
BACKGROUND AND OBJECTIVES: The INTERVAL trial aimed to find the optimum frequency of blood donation to enhance blood supplies and maintain donor health. This not only requires biological knowledge, but also an appreciation of donor perspectives, and how their experiences and beliefs might be central if any changes are ever to be made. To address this, trial participants were interviewed about their ideas of blood and the body in relation to their experiences of increased donation frequency...
February 9, 2018: Vox Sanguinis
E Ferguson, C Lawrence
BACKGROUND AND OBJECTIVES: The design of effective donor recruitment campaigns requires an accurate understanding of donor motivations. This requires cross-validation of theoretically derived, psychometrically assessed motivations with behavioural preferences. Theoretical models suggest that blood donors should be more sensitive than nondonors to violations of fairness norms. Specifically, active blood donors, compared to nondonors, should endorse beliefs of reciprocal fairness, norms of both positive and negative reciprocity and reject more unfair offers in a behavioural economic game (the ultimatum game)...
February 9, 2018: Vox Sanguinis
Ø Jans, C S Nielsen, N Khan, K Gromov, A Troelsen, H Husted
BACKGROUND AND OBJECTIVES: Preoperative anaemia is prevalent in elderly patients scheduled for major orthopaedic surgery and is associated with increased transfusion risk and postoperative morbidity. New guidelines recommend preoperative correction of anaemia and iron deficiency in all patients with a Hb < 13 g/dl. However, iron deficiency and other causes of preoperative anaemia in hip- (THA) and knee (TKA) arthroplasty are only sparsely studied. MATERIALS AND METHODS: Preoperative Hb and iron status were prospectively collected from 882 unselected elective fast-track THA/TKA patients and analysed according to both WHO anaemia criteria (Hb < 12 g/dl females, <13 g/dl males) and Hb < 13 g/dl for both genders...
February 6, 2018: Vox Sanguinis
C Aubron, R K Kandane-Rathnayake, N Andrianopoulos, A Westbrook, S Engelbrecht, I Ozolins, M Bailey, L Murray, D J Cooper, E M Wood, Z K McQuilten
BACKGROUND AND OBJECTIVES: The timing of blood administration in critically ill patients is first driven by patients' needs. This study aimed to define the epidemiology and significance of overnight transfusion in critically ill patients. MATERIALS AND METHODS: This is a post hoc analysis of a prospective multicentre observational study including 874 critically ill patients receiving red blood cells, platelets, fresh frozen plasma (FFP) or cryoprecipitate. Characteristics of patients receiving blood only during the day (8 am up until 8 pm) were compared to those receiving blood only overnight (8 pm up until 8 am)...
February 2, 2018: Vox Sanguinis
A Olaussen, J Bade-Boon, M C Fitzgerald, B Mitra
INTRODUCTION: Management of major haemorrhage as a result of trauma is particularly challenging when blood is not an option (BNAO). Evidence on therapeutic strategies in this situation is limited. The aim of this study was to evaluate the management and outcomes of patients who identified themselves as Jehovah's Witnesses (who usually refuse blood products) with traumatic haemorrhage at an Australian major trauma centre. METHODS: A retrospective review of patients from The Alfred Trauma Registry was conducted, including patients who were Jehovah's Witnesses presenting between January 2010 and January 2017...
February 2, 2018: Vox Sanguinis
M B Pagano, R A Metcalf, J R Hess, J Reyes, J D Perkins, M I Montenovo
BACKGROUND: During massive transfusion, the volume ratio of administered plasma (PL Vol) to red blood cell (RBC Vol) appears to be associated with reduced blood utilization and improved survival. The aim of this study was to evaluate the optimal component ratio in the setting of liver transplantation. METHODS: This is a retrospective chart review of patients who underwent liver transplantation and received at least 500 ml of red blood cells from January 2013 through December 2015...
January 22, 2018: Vox Sanguinis
W Fingrut, K Rikhraj, D Allan
Many patients in need of a haematopoietic cell transplant cannot find a suitable HLA-compatible donor within their families and rely on volunteers who have registered as haematopoietic stem cell donors with a stem cell donor registry. Transplant physicians mostly prefer male donors for their patients when multiple donor options exist, and organizations recruiting donors are actively targeting males in their recruitment efforts. However, significant recruitment of female donors continues worldwide and appears to be increasing...
January 22, 2018: Vox Sanguinis
C Matsumoto, N Shinohara, R A Furuta, N Tanishige, M Shimojima, K Matsubayashi, T Nagai, K Tsubaki, M Satake
The risk of transfusion-transmitted infection (TTI) for severe fever with thrombocytopenia syndrome virus (SFTSV) is a concern because person-to-person transmission resulting from contact with SFTSV-contaminated blood has been reported. To obtain information regarding the risk of TTI-SFTSV, antibody testing was performed for blood samples donated in an severe fever with thrombocytopenia syndrome-endemic area in Japan. No antibody-positive samples were detected among 3990 samples. This finding suggested that there were few cases of SFTSV infection among donors and that the risk of TTI-SFTSV was also estimated low in Japan...
January 22, 2018: Vox Sanguinis
C R Seed, P E Hewitt, R Y Dodd, F Houston, L Cervenakova
Transmissible spongiform encephalopathies (TSEs) are untreatable, fatal neurologic diseases affecting mammals. Human disease forms include sporadic, familial and acquired Creutzfeldt-Jakob disease (CJD). While sporadic CJD (sCJD) has been recognized for near on 100 years, variant CJD (vCJD) was first reported in 1996 and is the result of food-borne transmission of the prion of bovine spongiform encephalopathy (BSE, 'mad cow disease'). Currently, 230 vCJD cases have been reported in 12 countries, the majority in the UK (178) and France (27)...
January 22, 2018: Vox Sanguinis
C Dyer, C R Alquist, M Cole-Sinclair, E Curnow, N M Dunbar, L J Estcourt, R Kaufman, J M Kutner, J McCullough, Z McQuilten, L Potiphar, B Rioux-Masse, S Slichter, A Tinmouth, K Webert, A P Yokoyama, S J Stanworth
BACKGROUND: There continues to be uncertainty about the optimal approach to documenting bleeding data in platelet transfusion trials, with a desire to apply a common assessment tool across all trials. With this in mind, a consensus bleeding assessment tool (BAT) has been developed by the Biomedical Excellence for Safer Transfusion (BEST) collaborative, based on review of data collection forms used in published randomized trials and following content validation with a range of healthcare professionals at seven haematology centres through BEST members...
January 10, 2018: Vox Sanguinis
A Kellens, E De Buck, M-P Emonds, P Vandekerckhove, L Lagae
BACKGROUND AND OBJECTIVES: Epilepsy is a common neurological disorder characterized by the appearance of seizures. Often, epilepsy patients are temporarily or permanently excluded from blood donation. To gain a better understanding of the policies that are currently applied, we performed a survey among blood services. METHODS: A cross-sectional, Web-based questionnaire using the online Questback tool was developed and distributed to 46 representatives of blood services worldwide...
January 4, 2018: Vox Sanguinis
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