A patient weighs 154 pounds. How many kilograms does the patient weigh?

A. It helps the nurse determine any potential allergic reactions: Knowing the active ingredient allows the nurse to identify whether the patient has a known allergy to that substance. This is critical for preventing allergic reactions, including potentially life-threatening anaphylaxis, and ensures safe medication administration.

B. It specifies the manufacturer of the drug: While the label may include manufacturer information, this does not directly affect patient safety regarding allergies or correct administration.

C. It provides the therapeutic class of the medication: The therapeutic class can guide understanding of the drug’s purpose and mechanism, but it does not directly inform the nurse about individual allergy risk or adverse reactions.

D. It indicates the number of refills available: Refill information is administrative and unrelated to safe clinical administration or allergy assessment, so it does not serve the primary safety purpose of knowing the active ingredient.

A. Move the decimal point three places to the right: Converting grams to milligrams requires multiplying by 1,000 because 1 gram = 1,000 milligrams. Moving the decimal three places to the right converts 2.5 g to 2,500 mg accurately.

B. Move the decimal point two places to the right: Moving the decimal only two places would convert 2.5 g to 250 mg, which is ten times less than the correct amount, leading to underdosing.

C. Move the decimal point three places to the left: Moving the decimal left would convert 2.5 g to 0.0025 mg, which is drastically smaller than the intended dose, risking ineffective treatment.

D. Move the decimal point two places to the left: This would convert 2.5 g to 0.025 mg, which is far below the correct dose and would result in severe underdosing.