CNA Vital Signs Measurement 4

Question 1

A patient's blood pressure reads 158/96 mmHg. Which category does this fall under according to AHA guidelines?

Accepted Answer

Stage 2 hypertension

Answer

Stage 2 hypertension is defined as systolic ≥140 mmHg or diastolic ≥90 mmHg.

Question 2

When measuring an oral temperature, how long should the thermometer remain under the patient's tongue?

Accepted Answer

2–3 minutes

Answer

An oral thermometer should remain in place for 2–3 minutes to obtain an accurate reading.

Question 3

A CNA is measuring a patient's pulse and notices it is irregular. What is the best action?

Accepted Answer

Count for a full 60 seconds and report the irregularity

Answer

An irregular pulse should be counted for a full 60 seconds and reported to the nurse for further evaluation.

Question 4

Which site is CONTRAINDICATED for temperature measurement in a patient who is receiving oxygen via nasal cannula?

Accepted Answer

Oral

Answer

Oral temperature is contraindicated in patients receiving oxygen via nasal cannula because mouth breathing affects accuracy.

Question 5

Normal SpO2 (oxygen saturation) for a healthy adult is typically:

Accepted Answer

95–100%

Answer

A normal pulse oximetry reading for a healthy adult is 95–100%.

CNA Practice Test