ABSTRACT
【Objective】 To understand the current situation of blood components distribution in domestic prefecture-level blood stations through analyzing the components distribution data of 24 prefecture-level blood stations in China. 【Methods】 The data of components distribution of 24 blood stations from 2017 to 2020 as well as the data of blood deployment of 24 blood stations from 2019 to 2020 were collected and analyzed. 【Results】 From 2017 to 2020, positive annual growth in red blood cells, plasma and cryoprecipitate was observed in 22, 19 and 15 out of the 24 blood stations, and the annual growth median rate of above three components was 5.24%, 3.80% and 3.25%, respectively. Among the 24 prefecture-level blood stations, 23 carried out the preparation of cryoprecipitate. 【Conclusion】 The distribution of red blood cells, cryoprecipitate and plasma in prefecture-level blood stations is increasing year by year. However, there is a overstock of plasma, and most blood stations need blood employment.
ABSTRACT
In November 2017,after a five-year hiatus,the American Academy of Ophthalmology (AAO) published the latest version of Amblyopia Preferred Practice Pattern (PPP).It provides authoritative guidance for the diagnosis and treatment of amblyopia based on the best clinical evidence.The new PPP continues the rigorous,comprehensive and refined features of the 2012 edition,and has updated and supplemented in many aspects,such as definition,epidemiology,classification,diagnosis and treatment etc.This article introduces and interprets the main contents and updates of the new edition of the PPP.