Dosage calculation rn maternal newborn proctored assessment 3.2
Calculation
A nurse is preparing to administer lidocaine 1.7 mg/min via continuous IV infusion to a client who is pregnant and has a ventricular arrhythmia. Available is lidocaine 1 g in dextrose 5% in water 250 mL. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
mL/hr
Explanation & Rationale
Convert grams to milligrams: 1 g = 1000 mg Calculate the concentration of lidocaine: 1000 mg / 250 mL = 4 mg/mL Calculate the mL/min rate: 1.7 mg/min / 4 mg/mL = 0.425 mL/min Calculate the mL/hr rate: 0.425 mL/min × 60 min/hr = 25.5 mL/hr Round to the nearest whole number: = 26 mL/hr The nurse should set the IV pump to deliver 26 mL/hr.
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