PNP: Math Videos

DROP FACTOR MATH PROBLEMS

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THREE FACTOR MATH

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Patient had 8 ounces (oz) of coffee, what is their intake?

*240 mL*

Baby was born at 19 inches (in) How many *centimeters (cm)* is that?

*48.26 cm*

What *method* do we use to do Clinical Math calculations?

*Dimensional Analysis* - Units cross out (Numerator → Denominator)

Military Time

- *24 Hour Clock* - 1:00 a.m. = 0100 hours - 2:00 a.m. = 0200 hours - 11:00 p.m. = 2300 hours - 11:59 p.m. = 2359 hours - Don't use → *:*

Ex 6.2: As a prudent nurse, you are concerned that the child may be receiving an *unsafe* dosage of Tagamet; therefore, you want to identify how many milli grams per kilogram per day (mg/kg/day) the child weighing 22 kg is receiving. The dosage of medication being given four times a day is 2.8 mL/ dose. The dosage on hand is 300 mg/5 mL. How many *milligrams/kilograms/day* is the child receiving? Is this a *safe* dose?

- 30.55 mg/kg/day - *SAFE*

What units will Strength be in?

- Grams (g) - Milligrams (mg) - Micrograms (mcg) - Units

Piggy Back

- Intermittent Infusion - Ex: An extra antibiotic is being added in a mini bag.

Gravity Tubing

- No pump, drips fall into a drip chamber. - You have to count how many *drops per minute* in order to set the dose rate for medication.

What units will Volume be in?

- Tablets - Capsules - Milliliters (mL) - Teaspoon (tsp)

1 inch (in) = ________ centimeters (cm)

1 inch (in) = *2.54 centimeters (cm)*

1 kilogram (kg) = ________ grams (g)

1 kilogram (kg) = *1,000 grams*

1 kilogram (kg) = ________ pounds (lbs)

1 kilogram (kg) = *2.2 pounds (lbs)*

1 milligram (mg) = ________ micrograms (mcg)

1 miligram (mg) = *1,000 micrograms (mcg)*

1 gram (g) = ________ milligrams (mg)

1 gram (g) = *1,000 milligrams (mg)*

What is the *Volume* that an IV Pumps deliver at written?

Total mL delivered.

1 teaspoon (tsp) = ________ milliliters (mL)

1 teaspoon (tsp) = *5 milliliters (mL)*

Common Equivalencies (pg. 32)

Memorize These Next Cards

Which *system* are we using for Clinical Math calculations?

Metric System

Intake & Output are always reported in ____________________________ (pg. 35)

Milliliter mL

LHSON Rules

Round to the *Hundredth*

Example 5.6 The Physician orders 500 mL of 0.45% NS with 20 mEq of KCl to infuse over 8 hours. Calculate the number of Milliliters per hour to set the IV pump.

(20 mEq = Med in Bag, not used in math)

Example 5.8 The nurse checks the IV pump and documents that the pump is set at and delivering 11 mL/hr and that the IV bag hanging is labeled: Aminophylline 1 gram/ 250 mL. How many milligrams per hour is the patient receiving?

(Backwards: Starts with Volume instead of strength.)

What does Medication come in?

(Strength is a weight)

Baby was born at 54 centimeters (cm) How many *inches (in)* is that?

*21.26 in*

1 ounce (oz) = ________ milliliters (mL)

1 ounce (oz) = *30 milliliters (mL)*

The Joint Commission Rules

1. No Trailing Zeros 2. No Naked Decimals

Dimensional Analysis Rules

1. Set it up correctly. 2. Figure out where you're going. (what is answer units) 3. What do you need to change?

Ex 6.1: The physician orders Tagamet for gastrointestinal ulcers 30 mg/kg/day PO in four divided doses for a child weighing 22 kg. The dose on hand is Tagamet 300 mg/5 mL. How many *milliliters per day* will the child receive? How many *milliliters per dose* should the child receive?

11 mL/ Day 2.75 mL/ Dose

ONE FACTOR MATH

Chapter 4

TWO FACTOR MATH

Chapter 5

Two Factor Math Problems are typically..... ?

Weight or Time Based Medications