Pharmacology Routes of Admin #4

Question

Which is a disadvantage of use of the intravenous route (IV) for pain medication?

Answers

  1. Slow onset delays relief of pain
    • Rationale:

      This is not the correct answer because the IV route has a rapid, not slow, onset of action. This can make this route have more risk of medication toxicity, overdose, and adverse effects. Careful monitoring of the patient is extremely important.

  2. Increased cost interferes with cost effectiveness
    • Rationale:

      This is the correct answer because IV therapy is more costly than other routes of administration. In addition to the preparation of the IV solution, the need for an IV site, including supplies and qualified staff to start and maintain the IV, this route of administration is much more costly and not as cost effective in some cases. It is the preferred route for emergent situations where rapid onset is imperative.

  3. Variability in medication absorption
    • Rationale:

      This is not the correct answer because IV medication administration has the ability to have precise control over blood levels of the medication. The oral route has the most variability in absorption, since many factors affect absorption and blood levels.

  4. Easy and convenient medication administration
    • Rationale:

      This is not the correct answer because the IV route of medication administration is a more complex, difficult, and inconvenient route of administration. In addition to the preparation of the IV solution, the need for an IV site, including supplies and qualified staff to start and maintain the IV, this route of administration is much more complicated to perform and maintain.

Overview

The IV route of medication administration has many advantages. Nevertheless, one major disadvantage is the therapy’s increased cost.

Explanation

Learning Outcomes

The intravenous route used for administration of pain medications has a few disadvantages, including high cost, difficulty, and inconvenience. A patent IV is required for IV administration of any medication. The advantages of use of the IV route for medication administration include rapid onset, precise control over levels of medication, and the IV route allows for larger volume to be infused.

Test Taking Tip

Be keenly aware of advantages and disadvantages of various treatment options. After understanding the priority of airway, breathing, and circulation, there is cost.

Video Rationale