一、零位检查在检查时将血压计臂带取下,使血压计与大气相通,目力观察汞柱的凸月面是否与零位刻线相切。如果汞柱的凸月面过高,血压测量值会出现正误差,此时可以先右倾关闭水银壶,再用一字螺丝刀将血压计玻璃管顶端的压板向上方撬起,左手使血压计上盖略微前倾,同时用拇指接住玻璃管,将玻璃管左倾,内管孔向左露出压板一部分,抽出螺丝刀放下压板,此时 First, the zero check the arm sphygmomanometer removed when the check, so that the sphygmomanometer and the atmosphere, eyesight observation of the convex cylinder of the mercury column tangent to the zero line. If the convex surface of the mercury column is too high, there will be positive errors in blood pressure measurements, this time you can first right turn off the mercury kettle, and then use a flat-blade screwdriver to sphygmomanometer glass top of the plate pry up the left hand to the sphygmomanometer Cover slightly forward, while holding the glass with your thumb, the left glass tube, the tube hole to the left part of the platen exposed, remove the screwdriver to lay down the platen, this time