HCA HCA - Health Care Assistant Vital Signs and Clinical Measurements 2

Question 1

A pulse oximeter measures which of the following?

Accepted Answer

Oxygen saturation of the blood

Answer

A pulse oximeter measures oxygen saturation (SpO2) by passing light through the skin.

Question 2

What is a normal SpO2 reading for a healthy adult?

Accepted Answer

95–100%

Answer

A normal SpO2 range is 95–100%, indicating adequate blood oxygen saturation.

Question 3

When should an HCA report a patient's vital signs to the nurse?

Accepted Answer

Immediately when values are outside the normal range

Answer

Abnormal vital signs must be reported immediately so the nurse can assess and intervene promptly.

Question 4

Which factor can cause a falsely low pulse oximeter reading?

Accepted Answer

Nail polish on the finger

Answer

Dark or metallic nail polish can interfere with the light sensor and produce a falsely low SpO2 reading.

Question 5

What is the correct technique when counting a patient's respirations?

Accepted Answer

Count without the patient's knowledge to avoid altered breathing

Answer

Counting respirations without the patient's awareness ensures a natural, unaltered breathing rate.

(HCA) Health Care Assistant Certification Practice Test