CCMA - Certified Clinical Medical Assistant Pharmacology and Injections Questions and Answers 1 — 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?
- 25-gauge, 45-degree angle
- 27-gauge, 15-degree angle
- 22-gauge, 90-degree angle (Correct answer)
- 21-gauge, 45-degree angle
Correct answer: 22-gauge, 90-degree angle
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?
- Subcutaneous injection
- Intradermal injection
- Intravenous (IV) push
- Z-track method (Correct answer)
Correct answer: Z-track method
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?
- Intradermal
- Intravenous (Correct answer)
- Subcutaneous
- Intramuscular
Correct answer: Intravenous
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?
- 90 degrees
- 10 to 15 degrees
- 45 degrees (Correct answer)
- 30 degrees
Correct answer: 45 degrees
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?
- Ventrogluteal
- Deltoid
- Dorsogluteal
- Vastus lateralis (Correct answer)
Correct answer: Vastus lateralis
The vastus lateralis muscle, located in the anterolateral thigh, is the recommended and most developed muscle for intramuscular injections in infants and young children.
Question 6: Which of the "Ten Rights of Medication Administration" involves verifying the patient's identity using at least two identifiers before giving a medication?
- Right Drug
- Right Patient (Correct answer)
- Right Dose
- Right Route
Correct answer: Right Patient
The "Right Patient" is a fundamental principle of medication safety. It requires using at least two patient identifiers (e.g., name and date of birth) to confirm you are administering the medication to the correct individual before the procedure.
CCMA - Certified Clinical Medical Assistant Pharmacology and Injections Questions and Answers 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?