Dose calculation: the amount to give equals what is prescribed divided by what you have, times the quantity it comes in: amount = (desired dose/stock strength) × stock volume. Always keep the units the same (convert g to mg, mg to mcg first) and check that the answer is sensible.
混合後の濃度
1000 mg/5 mL = 200 mg/mL
体積
V = 600/200 = 3 mL
答え
V = 3 mL
4.投与量の計算
答え: R = 75 mL/h
投与量の計算:投与する量は、指示量を手元の薬の濃度で割り、その濃度が含まれる量を掛けたものです:投与量 =(指示量/原液の濃度)× 原液の量。単位は必ずそろえ(先に g を mg に、mg を mcg に換算)、答えが妥当か確認しましょう。
濃度
20000/1000 = 20 個/mL
ポンプ流量
R = 1500/20 = 75 mL/h
答え
R = 75 mL/h
5.点滴速度
答え: R = 90 mL/h
Infusion rates: a pump is set in mL/h = volume/time in hours. A gravity drip is counted in drops per minute: gtt/min = volume (mL) × drop factor (gtt/mL)/time (min). The drop factor is printed on the tubing package: macrodrip sets deliver 10, 15 or 20 gtt/mL (blood sets often 10 gtt/mL in the US, 15 in the UK) and microdrip sets 60 gtt/mL. Always use the drop factor the question or package gives.