Question

What are the steps to solve these problems?

1. 0.9% Sodium Chloride IV has been prescribed to run at a rate of 500 mL/4 hrs. You have available an IV administration set that delivers 15 gtts/mL. The IV should infuse at how many gtts/min? Answer at a rate of 850 mL/10 hrs. You D2.5w (2.5% Dextrose in Water) has been prescribed to run have available an IV administration set that delivers 60 gtts/mL. The IV should infuse at how many gtts/min? 2. Answer_ 3. DSW (5% Dextrose in Water) has been prescribed to run IV at a rate of 35 m/2 hrs. An IV will be administered using an infusion pump that delivers mL/hr. The IV should infuse at how many mL/hr? Answer_ 4. D2.5W (2.5% Dextrose in Water) IV has been prescribed to run at a rate of 190 mL/4 hrs. The IV should infuse at how many mL/hr if using an infusion pump? Answer NS with Inocor (Amrinone Lactate) is infusing at a rate of 30 mL/hr. The IV solution was prepared by adding 370 mg of Inocor to NS. The final solution contained a total volume of 250 mL. How many mg are infusing per hour? Answer 5.

Answer 1

ANSWER.

1. Calculation of gtts/min of sodium chloride.

          Formula = Amount of fluid (ml) / Total time of infusion(min) * Drop factor.

             Here

                Amount of fluid = 500 ml.

                Total time of infusion = 4 hrs.

          Convert hrs to min for calculation

                    So

                         Time of infusion = 4 * 60

                                                    = 240 min.

                     Drop factor = 15 gtts/ml.

      As per formula

            gtts/min of sodium chloride = 500 / 240 * 15.

                                                          = 2.08 * 15

                                                              = 31.2 gtts/min.

2.Calculation of gtts/min of dextrose solution.

        Formula = Amount of fluid / Total time of infusion * Drop factor.

                 Amount of fluid = 850 ml.

                Total time of infusion = 10 hr.

          Convert hours to minute for calculation.

                So

                    Total time of infusion = 10 * 60

                                                      = 600 min.

                     Drop factor = 60 gtts/min.

          As per formula

             gtts/min of dextrose solution = 850 / 600 * 60

                                                               = 1.42 * 60

                                                               = 85 gtts/min.

3.Calculation of ml/hr of dextrose solution.

             Formula = Volume(ml) / Time (hr)

                Here

                   Volume = 35 ml.

                    Time = 2 hr.

       As per formula

            ml/hr of dextrose solution = 35 / 2

                                                          = 17.5 ml/hr.

4.Calculation of ml/hr of dextrose solution.

         Formula = Volume (ml) / Time (hr)

                Here

                     Volume = 190 ml.

                     Time = 4 hr.

             As per formula

                    ml/hr of solution = 190 / 4

                                              = 47.5 ml/hr.

5.Calculation of mg/hr of Amrinone lactate solution.

               Formula = Rate / ml available * Dose available.

                  Here

                      Rate = 30 ml/hr.

                      ml available = 250 ml.

                      Dose available = 370 mg.

       As per formula

                mg / hr of Aminone lactate = 30 / 250 * 370

                                                          = 0.12 * 370

                                                            = 44.4 mg / hr.