dosage calculations

Dosage Calculations Week 4

1. A client with a deep vein thrombosis (DVT) is prescribed a heparin drip.  The loading dose of 80 units/kg to a maximum of 5000 units is prescribed.  The client weighs 190 lbs.  Available:  heparin 5000 units/mL vial.   

a. Client weight in kg _______ (round to nearest hundredth) 

b. Loading dose ________units (round to nearest whole unit) 

c. Volume to administer ___________mL 

 

2. After administering the bolus dose, the prescription indicates to initiate a heparin infusion at 18 units/kg/hr).  Available: heparin 25,000 units in 250mL D5W. 

a. What rate will the infusion pump be set (mL/hr)? Round to the nearest tenth. 

 

 

 

3. The client’s aPTT at next check is 39.8.   

a. Using the above protocol, how much heparin would you bolus? (Round to nearest whole unit) 

b. How would you adjust the infusion rate? 

c. What is the new setting on the infusion pump (mL/hr)? Round to the nearest tenth.  (HINT:  Add increase to current units/kg/hr and then calculate) 

d. When would you check the aPTT again? 

 

4. The client’s aPTT at next check is 122   

a. Using the above protocol, how would you adjust the infusion rate? 

b. What is the new setting on the infusion pump (mL/hr)? Round to the nearest tenth. 

1. A client is prescribed ibuprofen 600 mg PO q6hr for joint pain.  How many grams of ibuprofen is the client consuming daily? 

 

 

 

 

2. A provider prescribes 2 g of a medication to give to a client in eight divided doses over the next 24 hr.  How many mg should the nurse administer for each dose? 

 

 

 

 

3. A client having an allergic reaction is prescribed diphenhydramine (Benadryl) 30 mg IM.  Available:  diphenhydramine 50 mg/1 mL.  How many ML should the nurse administer? Round to the nearest tenth. 

 

 

 

 

4. A client is prescribed ceftriaxone sodium (Rocephin) 1 gm via intermittent IV bolus over 30 min.  Available:  ceftriaxone sodium 1 g in 100 mL dextrose 5% in water.  The nurse should set the pump to deliver how many mL/hr?  Round to the nearest whole number. 

 

 

 

 

5. A client is ordered hydrocortisone sodium succinate (Solu-Cortef) 250 mg via IV bolus.  Available:  hydrocortisone sodium succinate 1000 mg/8 mL.  How many mL should the nurse administer?  Round to the nearest tenth.