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Cost of allogeneic blood transfusion

World Journal of Hematology 2012年第3期1卷 8-13页

作者： Diana Sun ivo abraham Center for Health Outcomes and Pharmacoeconomic Research Department of Pharmacy Practice and ScienceCollege of PharmacyUniversity of ArizonaTucsonAZ 85721United States Matrix45 Tucson AZ 85743 United States

Blood is a scarce and costly resource to society. Therefore, it is important to understand the costs associated with blood, blood components, and blood transfusions. Previous studies have attempted to account for the cost of blood but, because of different objectives, perspectives, and methodologies, they may have underestimated the true(direct and indirect) costs associated with transfusions. Recognizing these limitations, a panel of experts in blood banking and transfusion medicine gathered at the Cost of Blood Consensus Conference to identify a set of key elements associated with whole blood collection, transfusion processes, follow-up, and to establish a standard methodology in estimating costs. Activity-based costing(ABC), the proposed allinclusive reference methodology, is expected to produce standard and generalizable estimates of the costof blood transfusion, and it should prove useful to payers, buyers, and society(all of whom bear the cost of blood). In this article, we argue that the ABC approach should be adopted in future cost-of-transfusion studies. In particular, we address the supply and demand dilemma associated with blood and blood components; evaluate the economic impact of transfusion-related adverse outcomes on overall blood utilization; discuss hemovigilance as it contributes not to the expense, but also the safety of transfusion; review previous cost-oftransfusion studies; and summarize the ABC approach and its utility as a methodology for estimating transfusion costs.

关键词： Transfusion Red blood cells Cost Activitybased costing Methodology

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Six-year outcomes in neovascular age-related macular degeneration with ranibizumab

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International Journal of Ophthalmology(English edition) 2017年第1期10卷 81-90页

作者： Julie Jacob Heidi Brié Anita Leys Laurent Levecq Filip Mevgaerts Kris Denhaerynck Stefaan Vancayzeele Eline Van Craeyveld ivo abraham Karen MacDonald Leuven University Eye Hospital Kapucijnenvoer 33Leuven B-3000Belgium Novartis Pharma Medialaan 40Vilvoorde B-1800Belgium Catholic University of Louvain CHU UCL NamurYvoirB-5530Belgium Medisch Centrum Aarschot Langdorpsesteenweg 129Aarschot B-3200Belgium Matrix45 6159 W Sunset RdTucsonAZ 85743USA Center for Health Outcomes and Pharmacoeconomic Research University of ArizonaTucsonAZ 85721USA

AIM： To evaluate the outcomes of （6y ranibizumab therapy in neovascular age-related macular degeneration （AMD）.METHODS： HELIX was a retrospective, observational effectiveness study using medical records of patients treated in three clinics in Belgium. Patients had neovascular AMD and were initially treated with intravitreal ranibizumab （0.5 mg） between November 1, 2007 and October 31, 2008, had （6y of data available, and were treated on an ongoing, as-needed basis. Outcomes included best-corrected visual acuity （BCVA） and central retinal thickness （CRT）.RESULTS： The sample consisted of 88 eyes from 69 patients. Mean age was 76.4±6.5y, most patients were female （62.3%）. Most eyes （62.5%） were treatment-naive, 33 previously treated eyes had received predominantly other anti-vascular endothelial growth factor agents and verteporfin. Mean baseline BCVA was 57.4±12.7 ETDRS letters and CRT was 291.5±86.1 （m. On average, patients received 20.6±11.9 ranibizumab injections over the （6y. Intervals between injections were on average 12.7±16.1wk. Mean change in BCVA from baseline to last observation for the sample was less than one letter （-0.9±17.3 letters）, with an average loss of -3.2±15.6 letters in previously treated eyes versus a gain of 0.6±18.4 letters in treatment-na？ve eyes. When considering a loss of 〈15 letters over 6y as stabilization of disease, 75.9% of all eyes showed a positive （improvement or stabilization） outcome. Mean change in CRT from baseline to last observation for the sample was -26.9±148.4 （m with the greatest reduction observed in treatment-naive ***： This retrospective study of 69 neovascular AMD patients treated for （6y with ranibizumab demonstrates long-term visual stabilization. In light of the natural evolution of the disease, these data confirm that ranibizumab is effective long-term under real-world conditions of heterogeneity of patients, clinicians, and centers.

关键词： ranibizumab age-related macular degeneration visual acuity central retinal thickness optical coherence tomography visual function, long-term outcome

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