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Two patients developed a low-titre inhibitor against rpFVIII, neither experienced any complications. Discussion In our real world experience, susoctocog-alfa was proven to be an effective and safe therapeutic option for patients with AHA, also at a lower than recommended dosage. In our report, the appearance of low-titre inhibitors.Background Platelet transfusions are necessary to prevent and treat haemorrhages in thrombocytopenic patients or those with severe platelet dysfunction. In Latin American countries, including Argentina, blood supplies from voluntary non-remunerated blood donors remain dependent on family replacement donors, since altruistic repeat donors are exceptional and platelet donors are very scarce. The aim of this study was to recruit a group of frequent, voluntary, altruistic blood donors and determine their human platelet antigen (HPA)-genotype in order to establish the first registry of HPA-typed voluntary platelet donors in Argentina. Material and methods In this study, we invited and recruited voluntary blood donors who attended the Fundación Banco Central de Sangre between July 2016 and July 2017. DNA was extracted from K2EDTA anticoagulated whole blood and genotyping was performed by polymerase chain reaction, using sequence-specific primers to type the HPA-1 to -6, -9 and -15 systems. A subset of samples was also tested using a commercial HPA-TYPE kit. Donors were invited to join the National Register of Haematopoietic Stem Cell Donors of Argentina. Results A cohort of 500 platelet donors was recruited and characterised and a database with their personal information, including their genotype for the most relevant HPA alloantigens, was created. Eight of the 500 donors (1.6%) were HPA-1a negative. https://www.selleckchem.com/ HPA allelic variants -4b, -6b and -9b were detected for the first time in our population. There was 100% concordance between our in-house assay and the commercial kits in the subset of 150 donor samples assayed in parallel. Discussion The efforts made to recruit, characterise and register voluntary platelet donors will provide the first sustainable source of HPA and human leukocyte antigen-typed platelets for compatible transfusions in the country. Remarkably, we identified a higher percentage of HPA-1a-negative donors than previously detected in the Argentinean population.Background Pathogen reduction technology (PRT) may damage platelet (PLT) components. To study this, metabolic activity and haemostatic function of buffy coat (BC) PLT concentrates, with or without riboflavinand UV light PRT treatment, were compared. Material and methods Twenty-four BC PLT concentrates, leukoreduced and diluted in additive solution, were grouped into 12 type-matched pairs, which were pooled and divided into 12 non-PRT-treated BC PLT concentrates (control units) and 12 riboflavin and UV PRT-treated BC PLT concentrates (test units). Haemostatic function and metabolic parameters were monitored by thrombelastography at days 1, 3, 7 and 14 post collection in both PLT groups. Results Loss of PLT discoid shape, glucose consumption, lactate production, and decrease in pH were greater in the PRT-treated PLTs than in control PLTs over time (p less then 0.001). PLT haemostatic function evaluated by clot strength was also significantly weaker in PRT-treated PLTs compared with the excellent clot quality of control PLTs at day 7 (maximum amplitude 41.27 vs 64.27; p less then 0.001), and even at day 14 (21.16 vs 60.39; p less then 0.001) of storage. Discussion Pathogen reduction technology treatment accelerates and increases platelet storage lesion, resulting in glucose depletion, lactate accumulation, PLT acidification, and discoid shape loss. The clots produced by control PLTs at day 14 were still remarkably strong, whereas at day 7 PRT-treated PLTs produced weaker clots compared to the control group. Clinical trials investigating the efficacy of PRT-treated PLTs transfused at the end of the storage period (day 7), when the in vitro clot strength is weaker, are needed.Background Postpartum haemorrhage (PPH) is still a leading cause of maternal morbidity in the US. We aimed to reassess national trends in severe and non-severe PPH using recent data. Material and methods We performed a cross-sectional study using the 2001-2012 Nationwide Inpatient Sample of the Healthcare Cost and Utilization Project. Delivery-related hospitalisations with PPH were identified using the International Classification of Diseases (9th revision). Rates were calculated per 1,000 delivery hospitalisations. All statistical analyses accounted for the complex sampling design of the data source. Results Rates of non-severe PPH did not change significantly from 2001-2002 to 2011-2012 (25.5 and 24.2 per 1,000; p=0.058). The rates of PPH requiring blood transfusions for caesarean deliveries more than doubled in this time period from 2.0 to 4.8 (p less then 0.001). The overall rate of PPH with a procedure other than blood transfusion has risen from 0.9 to 1.9. Specifically, rates of hysterectomy (0.5 to 0.7; p less then 0.001), embolisation (0.3 to 0.5; p less then 0.001), and uterine tamponade use (0.09 to 0.69; p less then 0.001) increased over the time period. Discussion Population-based surveillance data show an increasing rate of only severe PPH in the US. Rates of medical/surgical intervention including hysterectomy, embolisation and uterine tamponade use are also rising.Background The use of point-of-care (POC) coagulometers for monitoring patients on vitamin K antagonist (VKA) treatment makes international normalised ratio (INR) results immediately available. The aim of this study was to compare patients' satisfaction with VKA treatment in two settings characterised by distinct ways of monitoring POC INR versus laboratory INR. Materials and methods We recruited adult patients on long-term warfarin treatment (July 2017-February 2018) from the Anticoagulation Clinics at five district health centres (namely Cospicua, Floriana, Mosta, Qormi, Rabat-POC INR) and at Mater Dei Hospital (Msida - Laboratory INR) in Malta. We administered two psychometric questionnaires the Duke Anticoagulation Satisfaction Scale (DASS) (range 25-175, lower scores corresponding to higher satisfaction) and the Perception of Anticoagulation Treatment Questionnaire (PACT-Q2) (range 0-100, higher scores corresponding to higher satisfaction). Results We analysed 313 questionnaires (POC INR n=159, laboratory INR n=154).
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