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Chapter 15: Problem 26

Calculate the following dosages using the medication label or information provided. Label answers correctly: tabs, caps, mL. Answers expressed in milliliters should be rounded to the nearest tenth where indicated. Order: Folic acid 1,000 mcg IM daily for 10 days. Available: Folic acid 5,000 mcg per mL _________

Short Answer

Expert verified
0.2 mL

Step by step solution

01

Understand the Prescription Order

The prescription order is for folic acid at a dosage of 1,000 micrograms (mcg) to be administered via intramuscular (IM) injection once daily for 10 days.
02

Determine the Concentration Available

The available folic acid concentration specified is 5,000 mcg per milliliter (mL). This information will help us determine how much liquid medication is needed to deliver the prescribed dosage.
03

Set Up the Dosage Calculation

To find out how many milliliters are needed to administer 1,000 mcg, set up a ratio using the available concentration:\[\frac{5,000 \, ext{mcg}}{1 \, ext{mL}} = \frac{1,000 \, ext{mcg}}{x \, ext{mL}}\]
04

Solve the Ratio Equation

Cross-multiply to solve for \(x\) (the amount of folic acid in mL needed):\[5,000x = 1,000 \]Divide both sides by 5,000 to find \(x\):\[x = \frac{1,000}{5,000} = 0.2 \, ext{mL}\]
05

Label the Answer

The dose required to administer 1,000 mcg of folic acid is 0.2 mL. The solution should be labeled properly indicating the amount in milliliters.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Medication Administration
Medication administration involves the preparation and delivery of medication to patients in a safe and effective manner. This process is crucial in ensuring that the correct dosage of medication is provided to achieve the desired therapeutic effect.
The steps in medication administration typically include:
  • Verifying the medication order to ensure it is accurate and complete. This includes checking the patient's name, medication name, dosage, route, and timing.

  • Calculating the correct dosage, especially when the order must be converted to another form like milliliters when provided in micrograms.

  • Administering the medication through the correct route, as directed by the prescription.

  • Monitoring the patient for any adverse reactions or side effects following administration.
Ensuring proper medication administration is vital in the healthcare setting to prevent medication errors and promote patient safety.
Intramuscular Injection
An intramuscular (IM) injection is a technique used to deliver medication deep into the muscles. This method allows the medicine to be absorbed into the bloodstream quickly due to the rich blood supply in muscle tissue.
IM injections are selected based on several advantages:
  • They can deliver medication directly into the muscle for rapid absorption.

  • They are useful for medications that are irritating to subcutaneous tissue.

  • They allow for injections of larger volumes compared to subcutaneous routes.
To perform an intramuscular injection, clinicians need to ensure proper technique, including choosing the correct needle size, identifying the appropriate muscle site for injection, and ensuring cleanliness to prevent infection. Proper technique minimizes discomfort and maximizes the effectiveness of the medication.
Metric System
The metric system is a standardized system of measurement used worldwide, particularly in healthcare settings. It provides a precise method for dosage calculation and medication measurement.
In the context of medication administration, understanding the metric system is fundamental:
  • Units such as grams (g), milligrams (mg), and micrograms (mcg) are used to measure medication weight.

  • Milliliters (mL) are used for liquid volumes, which is essential for accurately administering doses like those converted from micrograms to mL.

  • The metric system offers simplicity with its base 10 structure, making conversion between units straightforward, such as converting 1,000 mcg to 1 mg.
Familiarity with the metric system facilitates accurate and efficient pharmaceutical calculations, particularly in dosage conversions.
Pharmaceutical Calculations
Pharmaceutical calculations are an integral part of dosage determination, ensuring the correct amount of medication is administered. This requires precise mathematical skills to convert and calculate dosages accurately.
The basic steps involved in pharmaceutical calculations include:
  • Identifying the concentration of the available medication, which allows for the setup of ratios or equations.

  • Setting up a proportion or equation to relate the prescription dosage to the available concentration.

  • Solving the equation to find the volume or amount of medication to administer. This often involves cross-multiplying in a ratio equation and solving for the unknown variable.

  • Rounding the result appropriately based on clinical guidelines, such as rounding to the nearest tenth for mL measurements.
Mastery of pharmaceutical calculations is crucial for healthcare providers to ensure safe and effective patient care.

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