Hesi rn dosage calculation proctored exam
Calculation
A client who weighs 60 kg receives a prescription for lorazepam 44 mcg/kg IV to be administer 20 minutes before a scheduled procedure. The medication is available in 2 mg/mL vial. How many mg of lorazepam should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest tenth.)
mg
Explanation & Rationale
Calculate the prescribed dose in micrograms: Dose (mcg) = Prescribed dose (mcg/kg) x Client's weight (kg) = 44 mcg/kg x 60 kg = 2640 mcg Convert the dose from micrograms to milligrams: Dose (mg) = Dose (mcg) / 1000 mcg/mg = 2640 mcg / 1000 mcg/mg = 2.64 mg Round to the nearest tenth: Rounded dose = 2.6 mg
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