Question

7. 1 liter of dextrose 5% in 0.45% sodium chloride (D5/1/2) is prescribed to infuse at 75 mls per hour. If the infusion were hung at 0600, what time will the infusion complete? Round to the nearest hour CHAPTER 16, INTRAVENOUS FLOW RATES (PP 351-353) 8. Pantoprozole (Protonix) 40 mg in 50 mLs of 0.9% sodium chloride is to infuse over 30 minutes by gravity. The drop factor is 20 gtt/ml. How many drops per minute should infuse? (Round to the nearest whole number).

Answer 1

ANSWER.

7) Calculation of the time in which infusion complete.

        Formula

             Rate(ml/hr) = Volume(ml) / Time(hr)

      So

              Time(hr) = Volume(ml) / Rate(ml/hr)

    Here

          Volume(ml) = 1000 ml (1L)

           Rate(ml/hr) = 75 ml/hr

   As per above formula

              Time(hr) = 1000 / 75

                             = 13.33

         Infusion starting time = 0600 (6 a.m)

     SO

         infusion completing time = 0600 + 13.33

                                                 = 1933 (7.33 pm)

             if round to the nearest hour

                                                 = 2000 ( 8pm)

8) Calculation of drops per minute.

      Formula

        Drops per minute (gtt/min) = Volume(ml) / Time(min) * Drop factor(gtt/ml)

     Here

         Volume(ml) = 50 ml

          Time(min) = 30 min.

         Drop factor = 20 gtt/ml

As per above formula

       Drop per minute (gt//min) = 50/30 * 20

                                                 = 1.67 * 20

                                                 = 33.4

                 if round to the nearest whole number

                                                 = 33 gtt/min.