Question

Ordered: IV D5W of 500 ml over 4 hours. Available: A gravity device. Drop factor on the tubing: 10. a. What flow rate will you set? DA equation: b. Evaluation: Ordered: IV antibiotic 250 mg 9th for 48 hrs. Available from pharmacy: IV antibiotic solution in 20 ml. to be piggybacked on a primary line: Directions: "Infuse over 60 minutes." a. What flow rate will you set on a gravity microdrip device? b. Estimated flow rate: DA equation: C. Evaluation: Ordered: IV antibiotic 100 mg q6h for 72 hours. Available from pharmacy: IV antibiotic solution in 30 ml of D5W to be piggybacked to a primary line. Directions: "Infuse over 20 minutes." How many ml. per hour will you set the infusion pump? a. Estimated flow rate: DA equation: b. Evaluation: Ordered: IV antibiotic to be piggybacked on a primary line: 50 mL to infuse over 30 minutes How many mL per hour will you set the infusion pump? a. Estimated flow rate: DA equation: b. Evaluation:

Answer 1

ANSWER.

* Calculation of flow rate.

      Formula

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

Here

   Volume(ml) = 500 ml.

   Time(min) = 240 min (4hr)

    Drop factor = 10 gtt/ml.

As per above formula

       Flow rate (gtt/min) = 500/240 * 10

                                    = 2.08 * 10

                                    = 20.8 gtt/min.

* Calculate flow rate.

        Formula

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

   Here

        Volume(ml) = 20 ml

         Time = 60 min

         Drop factor = 60 gtt/ml (microdrip)

As per above formula

       Flow rate (ml/min) = 20/60 * 60

                                     = 0.33 * 60

                                     = 20 gtt/min.

* Calculation of ml per hour.

      Formula

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

    Here

          Volume(ml) = 30 ml.

           Time(hr) = 0.333 hr (20 min)

As per above formula

       ml/hr = 30 / 0.333

                 = 90.09

                 = 90 ml/hr.

* Calculation of ml/hr.

         Formula

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

    Here

         Volume(ml) = 50 ml.

         Time (hr) = 0.5 hr (30 min)

As per above formula

        ml/hr = 50/0.5

                  = 100 ml/hr.