Ordered: Lanoxin pediatric elixir 100 mcg PO tid loading dose, for a child with heart failure. SDR for child over 2 years of age: loading dose 0.02-0.04 mg per kg per 24 hr in 3 divided dos-es; maintenance dose 0.006-0.
012 mg per kg per 24 hr in 2 divided doses Child's weight: 12 kg Available: a. SDR for this child in milligrams:In micrograms:
b. Decision: safe or unsafe order? State the
reason.If safe to give, how many milliliters should the nurse prepare?
c. Estimated dose:
d. DA equation:
e. Evaluation:
f. What is the difference between a loading dose and a maintenance dose?
a. 0.24 mg to 0.48 mg divided in 3 doses; 240 mcg to 480 mcg per day divided in 3 doses
b. Safe. 100 mcg x 3 = 300 mcg or 0.3 mg is within the SDR
c. Estimate: 2 mL (2 x 50 mcg = 100 mcg)
d.
e. Equation is balanced. Estimate supports answer.
f. A loading dose is the first dose of a drug. It is larger than a maintenance dose. The purpose is to achieve a therapeutic level quickly when patient's condition necessitates it.
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