CMA Medical Procedures and Techniques 5 — Questions and Answers
Question 1: Which of the following is the correct landmark for a deltoid intramuscular injection in an adult?
- 2 inches below the acromion process (Correct answer)
- At the midpoint of the outer thigh
- In the upper outer quadrant of the buttock
- 2 cm below the greater trochanter
Correct answer: 2 inches below the acromion process
The deltoid injection site is located approximately 2 inches (2-3 finger widths) below the acromion process of the shoulder.
Question 2: When obtaining a throat culture, the swab should be applied to which area?
- The roof of the mouth (hard palate)
- The tonsillar pillars and posterior pharynx (Correct answer)
- The base of the tongue
- The uvula only
Correct answer: The tonsillar pillars and posterior pharynx
The tonsillar pillars and posterior pharynx harbor the pathogens most relevant to throat infections and must be firmly swabbed.
Question 3: A patient requires oxygen via nasal cannula at 2 L/min. The approximate FiO2 (fraction of inspired oxygen) delivered is:
- 24%
- 28% (Correct answer)
- 32%
- 36%
Correct answer: 28%
At 2 L/min via nasal cannula, the FiO2 is approximately 28%; each liter adds roughly 4% above room air (21%).
Question 4: Which of the following is the primary purpose of applying a cold compress immediately after an acute musculoskeletal injury?
- Increasing circulation to promote healing
- Reducing inflammation and decreasing pain (Correct answer)
- Relaxing muscle spasms
- Softening tissue for easier examination
Correct answer: Reducing inflammation and decreasing pain
Cold application causes vasoconstriction, which reduces edema, bruising, and pain in the acute phase of injury.
Question 5: When performing a 12-lead ECG, lead V4 is placed at:
- 4th intercostal space, right sternal border
- 5th intercostal space, midclavicular line (Correct answer)
- 5th intercostal space, anterior axillary line
- 5th intercostal space, midaxillary line
Correct answer: 5th intercostal space, midclavicular line
V4 is placed at the 5th intercostal space in the midclavicular line, which is a key landmark for precordial lead placement.
Question 6: Which of the following is a contraindication to the use of a heating pad on a patient?
- Chronic low back pain
- Areas with impaired sensation or circulation (Correct answer)
- Muscle tension headache
- Mild arthritis pain
Correct answer: Areas with impaired sensation or circulation
Impaired sensation or circulation prevents the patient from detecting excess heat, significantly increasing the risk of burns.
Question 7: When collecting a stool specimen for occult blood testing (FOBT), the patient should avoid which of the following foods for 3 days before the test?
- Dairy products and eggs
- Red meat and raw vegetables such as radishes (Correct answer)
- Whole grains and citrus fruits
- Poultry and cooked green vegetables
Correct answer: Red meat and raw vegetables such as radishes
Red meat and certain raw vegetables (e.g., radishes, turnips) contain peroxidases that can cause false-positive results on guaiac-based FOBT.
CMA Medical Procedures and Techniques 5
Which of the following is the correct landmark for a deltoid intramuscular injection in an adult?