UUT 23. The order is for an IV of 500 mL D5/0.45 NS with 20 mEq...

ANSWER.

23) Calculation of gtt/min.

          Formula

                 gtt/min = Volume(ml) / Time(min) * Drop factor (gtt/ml).

    Here

          Volume(ml) = 500 ml

          Time (min) = 600 min (10hr).

          Drop factor = 60 gtt/ml (microdrip drop factor).

As per above formula

               gtt/min = 500/600 * 60

                           = 0.83 * 60

                           = 49.8

                           = 50 gtt/min.

24) Calculation gtt/min.

              gtt/min = Volume(ml) / Time(min) * Drop factor(gtt/ml).

    Here

         Volume(ml) = 250 ml

         Time(min) = 120 min (2hr).

         Drop factor = 10 gtt/ml.

As per above formula

            gtt/min = 250/120 * 10

                        = 2.08 * 10

                        = 20.8

                        = 21 gtt/min.

25) Calculation of ml/hr.

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

     Calculation of volume.

           Volume(ml) = Desired dose/Dose in hand * Quantity.

   Here

           Desired dose(D) = 1 g.

          Dose in hand (H) = 1 g.

               Quantity (Q) = 200 ml.

As per above formula

         Volume(ml) of drug required = D/H * Q

                                                       = 1/1 * 200

                                                       = 200 ml.

                            TIme (hr) = 1.5 hr (90 min).

        So

                   ml/hr = 200 / 1.5

                             = 133.3 ml/hr.