MATH 108 DOSAGE MATH
WORKSHEET ON PARENTERAL FLUID INTAKE
1. A patient is receiving a maintenance IV at the rate of 25 ml/hr. Vancomicin is ordered to run
as an IVPB, 250ml q12h for 1 hour. Calculate the total fluid intake parenterally.
2. An IV is infusing at the rate of 50 ml/hr. The doctor orders two antibiotics IVPB as follows:
Amoxicillin 250mg in 50 ml D5W q8h run for 30 minutes
Mefoxin 1g in 75 ml D5W q6h for 1 hr
Calculate the 24-hr parenteral intake.
3. A patient is receiving a primary IV at the rate of 40 ml/hr. The attending physician orders
three antibiotics IVPB for this patient as follows:



gentamicin anti-infective 100 mg IV in 100 mL over 1 hour daily
Cubicin (daptomycin) anti-infective 500 mg in 100 mL NS every 24 hours over 30
minutes
Zosyn (piperacillin and tazobactam) anti-infective 3.375 gm in 50 mL IV in NS every 6
hours
The patient, however, has end stage renal disease and her fluid intake has to be carefully
monitored. Calculate the total fluid intake parenterally for this patient in a 24-hr period.