The physician's order is for atropine 0.2 mg SC stat. This medication is available at a dosage of 400 mcg / mL (0.4 mg / mL). How many milliliters should be administered?

0.25 mL
0.5 mL
0.75 mL
0.9 mL


0.5 mL

Rationale: 0.5 mL should be administered. Use this formula: D/H x V = 0.2 mg / 0.4 mg x 1 mL. Therefore, 0.2 / 0.4 x 1 = 0.5 mL.

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