ATI Maternal Newborn Dosage Calculations Proctored Exam

What Are ATI Maternal Newborn Dosage Calculations Proctored Exam?

ATI Maternal Newborn Dosage Calculations Proctored Exam is a standardized exam that nursing students encounter before becoming nurses . ATI is an education resource and assessment body for nursing programs across the US. These exams help in measuring students understanding of essential nursing concepts and if they can successfully apply them in their real life.

The Exam will also evaluate the proficiency of a nursing student in dosage calculation for newborns.

Units of Measurements and Abbreviations for ATI Maternal Newborn Dosage Calculations.

Knowing measurement units and how to convert them is the foundation of performing dosage calculations. Weight, volume, and height are the three standard units used in calculations.

Flow Rate Dosage Calculations 

IV infusions are a mainstay in the nursing world. It is, therefore, essential to understand how to use them to help deliver the correct dosage. Since IV delivers a particular dose (mg) of liquid over a certain period (t), you must consider the following factors for such a calculation. 

Scenario: Let us say a client needs a 500 mg medication dose over one hour of infusion. However, the medication available is in 1000mg/1L solution.What will be the correct flow rate to ensure the right amount of medication is delivered to the client?

You will start by reviewing what you already know. Infusion has to last 1 hour. That translates to 60 minutes. You also know the client needs a 500mg dose. However, the drug comes in a 1000mg/1L formulation.

Here is the formula that will help find the volume of solution the client will require to get the correct dose.

(Dose available) / (volume available) = (dose desired) / volume desired)

(1000mg) / (1 L) = (500mg) / (? L)

Weight-Based Dosage Calculations 

Since people are always available in different sizes and shapes, not everyone will need the same dose of medication. To help account for this, most medications are dosed using the patient's weight, measured in kg. 

Scenario: Let’s assume the recommended drug dosage is 2mg/kg. What is the correct dose for a client who weighs 195 lbs. get when the medication is in 25mg tablets?

You will start by converting pounds to kilograms. Do this by dividing by 2.2

195 / 2.2 = 88.6kg

The recommended dose is 2 mg for every 1kg. All you will have to do is multiply the two figures. 

2 x 88.6 = 177.2 mg

Since the medication is only available in 25 mg tablets, round off the answer to 175 mg, translating to 7 tablets. 

Body Surface Area Dosage Calculation

Using the bodysurface area is another way to account for different body types. The body surface area formula is: 

BSA (m2) = √ (height (cm) x weight (kg)) / 3600)

Scenario: A client weighs 150 lbs. and measures 5’8” in height. The client needs treatment with a medication whose proper dosage is 2mg / m2. What is the correct dose for the client?

You will start by laying out all that we know. We will also convert the pounds to kg. 

150 lbs. / 2.2 kg = 68.2kg

After that, we will convert feet to inches to cm

5’8” = 68 in

68 in x 2.54 cm = 172.7cm

Let us now plug all these figures into the formula

√((172.7 x 68.3) / 3600) = √(3.28) =   1.8 m2

After calculating the client's BSA, you must multiply it by the dose per BSA.

2mg / m2 = 2mg / 1.8m2 = 3.6mg

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