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Your patient has hypertension during labour; she has been prescribed an infusion of hydralazine 60 mg in 60 mL sodium chloride 0.9%. The prescription asks you to administer 6 mg/hr. What is the rate in mL/hr?

Question

Your patient has hypertension during labour; she has been prescribed an infusion of hydralazine 60 mg in 60 mL sodium chloride 0.9%. The prescription asks you to administer 6 mg/hr. What is the rate in mL/hr?

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Solution

To calculate the rate in mL/hr, you need to know how many mg of hydralazine are in each mL of the solution.

  1. First, calculate the concentration of the hydralazine in the solution. You have 60 mg in 60 mL, so the concentration is 1 mg/mL.

  2. The prescription asks you to administer 6 mg/hr. Since the concentration of the solution is 1 mg/mL, you need to administer 6 mL/hr to deliver 6 mg/hr.

So, the rate is 6 mL/hr.

This problem has been solved

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