Author Question: What does pulse oximetry measure? A) Cardiac output B) Peripheral blood flow C) Arterial oxygen ... (Read 74 times)

kellyjaisingh · **on:** Jul 23, 2018

What does pulse oximetry measure?

A) Cardiac output
B) Peripheral blood flow
C) Arterial oxygen saturation
D) Venous oxygen saturation

Question 2

What information would a home care nurse provide to a client who is measuring peak expiratory flow rate at home?

A) Although the test is uncomfortable, it is not painful.
B) You will be asked to forcefully exhale into a mouthpiece.
C) The test is used to determine how much air you inhale.
D) You will do this each morning while still lying in bed.

lin77x · **Reply #1 on:** Jul 23, 2018

Answer to Question 1

Ans: C
Pulse oximetry is a noninvasive technique that measures the oxygen saturation of arterial blood. The normal range is 95 to 100. It does not measure cardiac output, peripheral blood flow, or venous oxygen saturation.

Answer to Question 2

Ans: B
Peak expiratory flow rate (PEFR) refers to the volume of air that can be forcibly exhaled. While sitting or standing, the client takes a deep breath and forcibly exhales through a mouthpiece. The client does this three times, and the highest number is recorded. Clients commonly measure PEFR at home to monitor airflow when they have conditions such as asthma.