A nurse is preparing to administer hydralazine 0.2 mg/kg IM to a client who weighs 84 lb. Available is hydralazine 20 mg/mL. How many mL should the nurse administer? (Round to the nearest hundredth)

To calculate the volume of hydralazine to administer, convert the client's weight to kilograms and multiply by the dose. Divide the dose in mg by the concentration in mg/mL to find the volume in mL.

Explanation:

To calculate the volume of hydralazine 0.2 mg/kg IM to be administered to the client, we first need to convert their weight from pounds to kilograms by dividing by 2.2046. The client weighs 84 lb, which is approximately 38.1 kg. Next, we multiply the weight by the dose of hydralazine: 38.1 kg × 0.2 mg/kg = 7.62 mg. The nurse should administer 7.62 mg of hydralazine to the client.

To find the volume in mL, we can use the concentration of hydralazine. The available hydralazine is in a concentration of 20 mg/mL. To find the volume, we divide the dose in mg by the concentration: 7.62 mg ÷ 20 mg/mL = 0.381 mL. Rounded to the nearest hundredth, the nurse should administer approximately 0.38 mL of hydralazine to the client.

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