Quiz 8

                            Problems

1. Order: Xylocaine 1 g IV in 500 mL D5W at 3 mg/min.
    Set the infusion pump at _____ mL/hr

2. Order: Nipride 500 mg IV in 250 mL D5w at 2 mcg/kg/min for a patient weighing 125 lb.
    Administer at _____ mL/hr

3. Order: Aminophylline 1 g IV 500 mL D5W to infuse at 20 mg/hr
    Set the infusion pump at _____ mL/hr 

4. Order Lidocaine 4 g IV in 1 L D5W at 3 mg/min
    Set the infusion pump at _____ mL/hr

5. Order: Pronestyl 250 mg IV in 500 mL D5W at 4 mg/hr
    What is the flow rate in mL/hr?

6. Order: Isuprel 4 mg IV per 500 mL D5W at 6 mcg per minute.
    Set the infusion pump rate at _____ mL/hr

7. Order: Dopamine 500 mg IV in 0.5 L NS at 6 mcg/kg/min.
    Patient weight is 150 lb
    What is the flow rate in mL/hr?

8. Order: Dopamine 300 mg IV in 250 mL NS at 2 mcg/kg/min.
    The patient weighs 85 kg.
    Flow rate: _____ mL/hr

9. Order: 100 units regular insulin IV in 250 mL 0.9%NS to infuse at 12 u/hr
    Flow rate: _____ mL/hr

10. Order: Add 10,000 units Heparin to 500 mL D5W and infuse at 100 u/hr IV.
       Flow rate: _____ mL/hr

11. Order: Aminophylline 2 g IV in 1 L D5W to infuse at 0.4 mg/kg/hr
       Patient weight 55 kg
       Infuse at _____ mL/hr

12. Order: nitroglycerine 50 mg in 250 mL D5W to infuse at 3 mcg/kg/min
       Patient weight 50 kg
       Infuse at _____ mL/hr

13. Order: Dobutamine 250 mg IV in 250 mL D5W to infuse at 5 mcg/kg/min 
       Patient weight 85 kg
       Infuse at _____ mL/hr

14. Order: Heparin 25,000 units IV in 250 mL D5W to infuse at 6 mL per hour.
       How many units per hour is the patient receiving?

15. Order: Infuse regular insulin 200 u IV in 500 mL NS at 25 mL/hr.
       How many units per hour is the patient receiving?

16. Order: Nipride 50 mg IV in 250 mL D5W to infuse at 60 mL/hr
       How many mg/hr is the patient receiving?

17. Order: Aminophylline 2 g in 1000 mL D5W to infuse at 22 mL/hr IV
       The safe dose is 0.4 mg/kg/hr
       Patient weight is 55 kg
       Is the IV dose at the present flow rate safe?

18. Drug "a" 1 g in 250 mL D5 1/2 NS is infusing at 14 mL/hr intravenously.
       Safe dose is 12.5 mcg/kg/min
       Patient weight is 165 lb.
       Is the IV dosage safe?

19. Order: 50,000 units Heparin IV in 250 mL NS to infuse at 6 mL/hr
       Safe infusion rate is 1000 units per hour
       Is the ordered dosage safe?

20. Order: 200 units regular insulin in 250 mL NS to infuse at 7 units per hour IV
       When you come on duty the PLUM IV infuser is set at 14 mL/hr
       Is it set at the correct rate?
       What is the correct rate?

Key

1. 90 mL per hour

mL/hr = 500 mL  X 1 g  X 3 mg  X 60 min = 90 mL/ hr
  1 g 1000 mg 1 min 1 hr  

2. 3 mL/hr

    125 2.2 = 57 kg
    2 mcg * 57 kg * 60 = 6840 mcg/hr

mL/hr = 250 mL  X 1 mg  X 6840 mcg = 3.4 or 3 mL/ hr
  500 mg 1000 mcg 1 hr  

3. 10 mL/hr

mL/ hr = 500 mL  X 1 g        X 20 mg = 10 mL/ hr
  1 g 1000 mg 1 hr  

4. 45 mL/hr

mL/ hr = 1000 mL  X 1 L  X 1 g        X 3 mg  X 60 min = 45 mL/ hr
  1 L 4 g 1000 mg 1 min 1 hr  

5. 8 mL/hr

mL/ hr = 500 mL  X 4 mg        = 8 mL/ hr
  250 mg 1 hr  

6. 45 mL/hr

    

mL/ hr = 500 mL    X 1 mg      X 6 mcg    X 60 min = 45 mL/ hr
  4 mg 1000 mcg 1 min 1 hr  

7. 24 mL/hr

    150 lb 2.2 = 68 kg
    6 mcg*68 kg* 60 = 24480 mcg/hr 

mL/ hr = 1000 mL  X 0.5 L  X 1 mg     X 24480 mcg = 24.4 or 24 mL/ hr
  1 L 500 mg 1000 mcg 1 hr  

8. 9 mL/hr

    2 mcg* 85 kg* 60 = 10200 mcg/hr 

mL/ hr = 250 mL   X 1 mg     X 10200 mcg = 8.5 or 9 mL/ hr
  300 mg 1000 mcg 1 hr  

9. 30 mL/hr

mL/ hr =  250 mL   X 12 U    X = 30 mL/ hr
  100 U 1 hr  

10. 5 mL/hr

mL/ hr =  500 mL    X 100 U = 5 mL/ hr
  10,000 U 1 hr  

11. 11 mL/hr

       0.4 mg* 55 kg = 22 mg/hr

mL/ hr = 1000 mL   X 1 L  X 1 g    X 22 mg = 11 mL/ hr
  1 L 2 g 1000 mg 1 hr  

12. 45 mL/hr

       3 mcg* 50 kg*60 = 9000 mcg/hr 

mL/ hr = 250 mL   X 1 mg     X 9000 mcg = 45 mL/ hr
  50 mg 1000 mcg 1 hr  

13. 26 mL/hr

       5 mcg* 85 kg* 60 = 25,500 mcg/hr

mL/ hr = 250 mL   X 1 mg     X 25500 mcg = 25.5 or 26 mL/ hr
  250 mg 1000 mcg 1 hr  

14. 600 u per hour

U/ hr = 25000 U   X 6 mL = 600 U/ hr
  250 mL 1 hr  

15. 10 u/hr

U/ hr = 200 U   X 25 mL = 10 U/ hr
  500 mL 1 hr  

16. 12 mg/hr

mg/ hr = 50 mg   X 60 mL = 12 mg/ hr
  250 mL 1 hr  

17. No

       Safe dose = 0.4 mg * 55 kg = 22 mg/hr ; Client is receiving twice the safe dose.  

mg/ hr = 1000 mg   X 2 g     X 22 mL = 44 mg/ hr
  1 g 1000 mL 1 hr  

18. Yes

       Safe dose = 12.5 mcg * 75 kg * 60 = 56.25 mg/hr
      

mg/ hr = 1000 mg   X 1 g   X 14 mL = 56 mg per hr; same as safe dose
  1 g 250 mL hr  

19. No

       Safe rate = 1000 u/hr; Client's dose 1200 u/hr (significantly higher than safe dose).

U/ hr = 50,000 U   X 6 mL = 1200 U/ hr
  250 mL 1 hr  

20. No

       Order: 7 u/hr
       Dose being delivered:  8.75 u/hr (significantly higher than the order)

       Rate the IV should be set at: 8.7 or 9 mL/hr

Units per hour being delivered
U/ hr = 200 U  X 14 mL = 8.75 U/ hr being delivered
  250 mL 1 hr  

 

Rate the IV should be set
mL/ hr =  250 mL    X 7 U = 8.7 or 9 mL/ hr
  200 U 1 hr