CCMA - Certified Clinical Medical Assistant Pharmacology and Injections Questions and Answers

Question 1

A medical assistant is preparing to administer an intramuscular (IM) injection to an adult patient in the deltoid muscle. Which of the following represents the correct needle gauge and angle of insertion?

Accepted Answer

22-gauge, 90-degree angle

Answer

Intramuscular injections are administered deep into the muscle tissue at a 90-degree angle to ensure the medication is deposited correctly. A 22- to 25-gauge needle is appropriate for most adult IM injections in the deltoid.

Question 2

A patient is prescribed a medication that is known to be irritating to subcutaneous tissue and may cause skin discoloration. Which injection technique is most appropriate to minimize these adverse effects?

Accepted Answer

Z-track method

Answer

The Z-track method is an IM injection technique used to prevent the medication from leaking back into the subcutaneous tissue. This is achieved by displacing the skin and subcutaneous tissue before injection, creating a zigzag path that seals the medication in the muscle when the tissue is released.

Question 3

Which of the following parenteral routes of administration has the fastest absorption rate?

Accepted Answer

Intravenous

Answer

The intravenous (IV) route provides the fastest absorption because the medication is delivered directly into the bloodstream, bypassing all barriers to absorption.

Question 4

When administering a subcutaneous injection, the medical assistant should insert the needle at what angle to the skin?

Accepted Answer

45 degrees

Answer

Subcutaneous injections are administered into the adipose (fatty) tissue just below the skin. A 45-degree angle is typically used to ensure the needle reaches this layer without penetrating the underlying muscle. A 90-degree angle may be used for patients with more adipose tissue.

Question 5

A medical assistant is instructed to administer 0.5 mL of a vaccine to a 5-month-old infant. Which of the following sites is the most appropriate for this injection?

Accepted Answer

Vastus lateralis

Answer

The vastus lateralis muscle, located in the anterolateral thigh, is the recommended and most developed muscle for intramuscular injections in infants and young children.

CCMA - Certified Clinical Medical Assistant Practice Test

CCMA - Certified Clinical Medical Assistant Practice Test

CCMA - Certified Clinical Medical Assistant Pharmacology and Injections Questions and Answers