CNA Practice Test: Video 8 Answers (25 Questions)

Question 1

When muscles atrophy, they become

Accepted Answer

Smaller

Answer

When muscles atrophy, they become smaller and weaker due to disuse, disease, or aging. This reduction in muscle mass can lead to decreased strength and impaired mobility. Regular exercise and proper nutrition are important for preventing or slowing muscle atrophy.

Question 2

Meal trays have arrived. Before serving each tray the nurse aide should

Accepted Answer

check each armband, even on familiar patients.

Answer

Patient identification is a critical safety measure to prevent medication errors and ensure the correct patient receives the correct meal. Even if a patient is familiar, verifying their identity against the armband prevents errors that could arise from similar names, room changes, or temporary memory lapses, upholding patient safety standards.

Question 3

Which of the following has to be reported right away?

Accepted Answer

A blood pressure of 90/40

Answer

A blood pressure of 90/40 mmHg is significantly low (hypotension) and indicates a potentially serious medical condition, such as shock, dehydration, or internal bleeding. This vital sign deviation requires immediate reporting to the nurse because it can lead to inadequate blood flow to vital organs, causing dizziness, confusion, and rapid deterioration of the patient's condition. The other options are generally within normal or mildly abnormal ranges that do not typically require immediate reporting.

Question 4

A Hepatitis B vaccination protects the person receiving it against a disease that affects

Accepted Answer

liver

Answer

The Hepatitis B vaccination protects against the Hepatitis B virus, which primarily infects the liver. This virus can cause acute or chronic liver inflammation, leading to severe conditions like cirrhosis, liver failure, or liver cancer. Vaccination is a critical preventive measure, especially for healthcare workers who are at higher risk of exposure.

Question 5

The Foley bag must be kept lower than the patient’s bladder because

Accepted Answer

it prevents urine returning to the bladder.

Answer

The Foley catheter drainage bag must always be kept lower than the patient’s bladder to ensure proper urine drainage by gravity. If the bag is raised above the bladder, urine can flow backward into the bladder, significantly increasing the risk of urinary tract infections due to reflux of stagnant urine.