ProCalc Nsg 132

Calculating ml per hourExample 1 An IV will be administered using an infusion pump that delivers ml/hr. D2.5W (2.5% Dextrose in Water) has been prescribed to run at a rate of 23 ml/30 min. The IV should infuse at how many ml/hr?We will find the answer in 4 steps:

Step 1 Write down the prescribed rateStep 2 Write down the conversion factorStep 3 Reduce the unitsStep 4 Perform the math

Calculating ml per hourExample 1 An IV will be administered using an infusion pump that delivers ml/hr. D2.5W (2.5% Dextrose in Water) has been prescribed to run at a rate of 23 ml/30 min. The IV should infuse at how many ml/hr? 23 ml 30 minStep 1 60 min 1 hourStep 2 1380 mlStep 4=xStep 3 46 ml1 hour=Reduce the answer & include the units.If you recognize that there are two 30 minute periods in one hour you can multiply the flow rate by two to obtain the same result.23 ml x 2 = 46 ml30 min 2 60 min (1 hour)= 23 x 60 mlWe will find the answer in 4 steps:

Step 1 Write down the prescribed rateStep 2 Write down the conversion factorStep 3 Reduce the unitsStep 4 Perform the math

30 x 1 hour30 hour

Calculating ml per hourExample 2 An IV will be administered using an infusion pump that delivers ml/hr. D5 in Lactated Ringers (5% Dextrose in Lactated Ringers Solution) has been prescribed to run at a rate of 60 ml/4 hrs. The IV should infuse at how many ml/hr?In this example, we note that the prescribed units are the same as the required units. Therefore, we need only to perform the math. 60 ml 4 hour 15 ml1 hour=Reduce the answer & include the units.

Thanks for viewing the Yavapai College Verde Learning Center Tutorial on Calculating Milliliters per Hour

Welcome to the Yavapai College Verde Learning Center Tutorial for Calculating Milliliters per Hour*In first Example, (Read Slide) *Step one our prescribed rate is 23 ml/30 min, Step 2 our conversion factor to change from minutes to hours is 60 minutes/ 1 hour Since our rate in step one has minutes on the bottom our conversion factor needs to be written with minutes on the top. In Step three we will reduce the units. We are left with the unit label of ml/hour which is what we are looking for. In the last Step we will perform the math, multiplying across the numerator we have 23 x 60 which = 1380. Multiplying straight across the denominator we have 30 x 1 which is equal to 30. To finish the math we will reduce the fractional answer using a calculator or long division and find that 23 ml/ in 30 min is the same as 46 ml/hr.

Read the recognition note. *Since the prescribed units are given in ml/hr and the question asks us to find ml/hr we wont need to convert or reduce any units. We will write the prescribed rate down and skip to step 4. In step four we will need to reduce the fraction 60/4 using a calculator, or long division if necessary. We will need to have the IV infuse at a rate of 15 ml /hr. **