換算値を選びます：kg、g、mg、mcg の間、または L と mL の間は1000、1 kg = 2.2 lb、小さじ1 = 5 mL、大さじ1 = 15 mL、1 fl oz = 30 mL、1カップ = 240 mL。
不要な単位が約分されるよう、分数で書きます。速度の場合は、変わる単位ごとに分数を1つ使います。
向きを確認します：小さい単位に変えると数は大きくなります。
丸めるのは最終的な答えだけで、問題が指定する精度に合わせます。
2演習問題
1.看護助手（CNA）の知識ふつう
In which position is a resident usually placed to receive an enema?
ARight side-lying with the legs straight
BLeft Sims' (left side-lying) position
CProne (on the stomach)
DHigh Fowler's position
2.看護助手（CNA）の知識むずかしい
A resident with arthritis is slow to button his shirt but wants to do it himself. The nursing assistant is running late. What should the nursing assistant do?
ATell him to wear a shirt without buttons from now on
BButton the shirt for him to save time
CLeave him alone and come back after lunch
DAllow him time and encourage him to finish it himself
練習問題（数値は架空のもので、臨床上の指針ではありません）。 処方箋に、経口懸濁液 6時間ごと を 2 tsp、10 日間と書かれています。1 tsp = 5 mL を用いて、全期間に必要な mL V はいくつですか。
2 tsp6時間ごと10 日1 tsp = 5 mL
V = mL
3溶液
1.看護助手（CNA）の知識
答え: B · Left Sims' (left side-lying) position
これが答えになる理由
The left Sims' position lets the enema solution flow by gravity into the rectum and the descending colon, which lie on the left side of the body.
答え
B · Left Sims' (left side-lying) position
2.看護助手（CNA）の知識
答え: D · Allow him time and encourage him to finish it himself
これが答えになる理由
Encouraging residents to do as much as they can for themselves maintains strength, dignity and independence. Doing tasks for them because it is faster can lead to loss of abilities and self-esteem.
答え
D · Allow him time and encourage him to finish it himself