患者男性,65岁,因下楼梯时不慎摔倒致右小腿闭合性骨折,你随救护车去现场,请你做闭合性骨折的急救处理。
气胸的典型X线表现为() ["多发性液气囊腔","肺野透亮度增高,肋间隙增宽,膈肌低平","肺门密度增高","肺野内外带透亮度明显差异,外带无纹理,可见到受压的脏层胸膜","肺尖部类圆形透光区,内有细小的纹理"]
对于既往无心肺疾病,无呼吸困难,单侧性的闭合性气胸,积气量低于多少可以不抽气让其自行吸收() ["<100%","<80%","<60%","<40%","<20%"]
下列哪项不符合慢性型特发性血小板减少性紫癜的临床特点:() ["青年女性为多,起病缓慢","出血广泛而严重,血小板多低于20×10/L","病程常可迁延数年,每次发作持续数周或数月","轻度脾肿大","可伴有贫血"]
试述标准不确定度B类评定的步骤?
简述四肢骨折现场急救外固定术