Question

Part F: Intravenous and Infusion Calculations continued An IV flow rate consists of the number otf cc/hour. Calculate the flow rate that a 1000 c IV solution infuses over an 8-hour period. 6. 7. Considering an IV flow rate in cc/hour, calculate the flow rate of the same 1000 ac IV solution infusing over a period of 6 hours. 8. The drop factor (gtts/cc) is the number of drops it takes to equal 1 cc for specific tubing in intravenous fluids. All packaging of fluids provides this information. Calculate the required drops per minute for a solution with a flow rate of 120 cc/hr and a drop factor of 15 gtts/cc. 9. Calculate the drops/minute for an intravenous solution with a flow rate of 100 cc/hr and drop factor of 20 gtts/cc. 10. Both mL/hr and cc/hr represent the total amount of fluid given per hour. Calculate the fluid/hour for a 1.0 LIV solution set to flow for 10 hours. 11. Calculate the drops/min for Question 10 if the drop factor is 20 gtts/cc 12. Adehydrated patient receives a 2.0 L dextrose solution to infuse over 16 hours. Calculate the drops/min if the tubing used has a drop factor of 20 gtts/cc. 13. The physician ordered a heparin drip for a patient with atrial fibrillation to infuse at 1,000 units per hour. The drip comes as 25,000 units in 1,500 mL solution. Calculate the mL received in the first hour. Then calculate the flow rate per minute if the tubing is 25 gtts/cc.

Answer 1

ANSWER.

6) Calculation of flow rate (cc/hr).

        Formula

           Flow rate(cc/hr) = Volume(cc) /Time(hr)

    Here

           Volume(ml) = 1000 cc.

             Time(hr) = 8 hr.

   As per above formula

             Flow rate (cc/hr) = 1000 / 8

                                         = 125 cc/hr.

7) Calculation of flow rate (cc/hr).

       Formula

            Flow rate(cc/hr) = Volume(cc) / Time(hr).

    Here

         Volume(cc) = 1000 cc.

         Time(hr)   = 6 hr.

     As per above formula

              Flow rate(cc/hr) = 1000 / 6

                                        = 166.6 cc/hr.

8) Calculation of drops per min.

        Formula

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

Here

      Volume(cc) = 120 cc.

       Time(hr) = 60 min (1hr).

       Drop factor = 15 gtts/min.

As per above formula

    Drops per minute = 120/60 * 15

                                  = 2 *15

                                  = 30 gtt/min.

9) Calculation of drops per minute.

        Formula

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

    Here

         Volume(cc) = 100 cc.

          Time(min) = 60 min (1hr).

         Drop factor = 20 gtt/cc.

As per above formula

          Drops per minute = 100/60 * 20

                                        = 1.66 * 20

                                        = 33.33 gtt/min.

10) Calculation of fluid/hour.

         Formula

              Fluid/hour = Volume(cc) / Time(hr).

      Here

          Volume(ml) = 1000 cc.

            Time(hr) = 10 hr.

   As per above formula

              Fluid /hour = 1000/10

                                = 100 cc/hr.

11) Calculate drops per minute if drop factor is 20 gtt/cc.

         Formula

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

       Here

             Volume(cc) = 1000 cc (1L)

              Time(min) = 60 min (1hr).

             Drop factor = 20 gtt/cc.

As per above formula

Drops per minute = 1000/60 * 20

   = 16.66 * 20

                                         = 333.2 gtt/min.

12) Calculation of drops per minute.

Formula

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

Here

   Volume(cc) = 2000 cc.

             Time(min) = 16 * 60

                               = 960 min.

            Drop factor = 20 gtt/cc.

     As per above formula

               Drops per minute = 2000/960 * 20

                                             = 2.08 * 20

                                             = 41.6 gtt/min.

13) Calculation of volume(ml) of drug and flow rate per min.

         Calculation of volume (ml).

             Formula = Desired dose/Dose in hand * Quantity.

      Here

           Desired dose(D) = 1000 units.

           Dose in hand (H)= 25000 units.

               Quality(Q) = 1500 ml.

    As per above formula

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

                                                        = 1000 / 25000 * 1500

                                                        = 0.04 * 1500

                                                        = 60 ml.

     Flow rate per min.

        Formula

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

      Here

            Volume(cc) = 60 cc (cc=ml)

             Time(min) = 60 min (1 hr).

            Drop factor = 25 gtt/cc.

    As per above formula

          Flow rate = 60/60 * 25

                          = 1 * 25

                           = 25 cc/min.