Rn Hesi Med Surg Dosage Calculations
Rn Hesi Med Surg Dosage Calculations ( 55 Questions)
A client who weighs 176 pounds receives a prescription for lorazepam 0.05 mg/kg intramuscularly 2 hours before a scheduled procedure. The medication is available in 4 mg/ml vial. How many ml should the nurse administer? (Enter numerical value only.)
To administer lorazepam to a client who weighs 176 pounds, the nurse should know how many mL to give. The prescription is for 0.05 mg/kg intramuscularly 2 hours before a scheduled procedure. To calculate the dose in mg, first convert the weight in pounds to kg by dividing by 2.2. For example, 176 pounds / 2.2 = 80 kg. Then multiply the weight in kg by the dose in mg/kg. For example, 80 kg x 0.05 mg/kg = 4 mg. To calculate the volume in mL, divide the dose in mg by the concentration in mg/mL. For example, 4 mg / 4 mg/mL = 1 mL. Therefore, the nurse should administer 1 mL.