Oxygen Test

What is hypoxia?

Insufficient oxygen reaching cells

What percentage of oxygen is in the air a person normally breathes?

21 percent

What percentage of oxygen is in the air exhaled into a victim?

16 percent

How do you know if someone is hypoxic?

Their oxygen saturation is below 94 percent

What are medical grade oxygen cylinders labeled and marked with?

U.S.P. and a yellow diamond containing "oxygen"

What are the steps for assembling the oxygen system?

1) Check the cylinder
2) Clear the valve
3) Attach the regulator
4) Open cylinder counterclockwise one full turn
5) Attach delivery device

What are the steps for administering emergency oxygen?

1) Turn unit on and adjust the flow
2) Verify oxygen flow
3) Place on victim

What does the regulator do?

Lowers pressure of the oxygen as it comes out of the cylinder

What does the pressure gauge do?

Shows the pressure in the cylinder

When is the pressure gauge full?

At 2000 psi

When is the pressure gauge empty?

Around 300 psi

What does the O-ring gasket do?

Makes the seal tight

What does the flow meter do?

Controls how fast oxygen flows from the cylinder into the victim

How much oxygen can nasal cannulas deliver?

24–44 percent

How much oxygen can a resuscitation mask deliver?

25–55 percent

What is the flow rate for a nasal cannula?

1–6 LPM or 2–4 LPM

What is the flow rate for a resuscitation mask for a responsive victim?

6–10 LPM

What is the flow rate for a resuscitation mask for an unresponsive victim?

6–15 LPM

What is the flow rate for a non-rebreather mask?

10–15 LPM

What is the flow rate for a BVM?

15 LPM or higher

How much oxygen can a BVM supply?

90 percent or more

What is the normal breathing rate for an adult?

12–20 breaths per minute

What is the normal breathing rate for a child?

15–30 breaths per minute

What is the normal breathing rate for an infant?

25–50 breaths per minute

How much oxygen can a non-rebreather mask deliver?

Up to 90 percent

You determine a victim needs emergency oxygen because he is exhibiting signs and symptoms of hypoxia. Which of the following is most likely present?

Increased heart rate

You should administer emergency oxygen to an adult victim with which breathing rate?

24 breaths per minute

When placing a resuscitation mask on a victim, position the rim of the mask between which of the following?

Lower lip and chin

Which method is most appropriate to determine that ventilations given with a BVM are effective?

Observing the victim’s chest rising clearly

You and another rescuer are using a BVM. You position and seal the mask. Which action is next?

Opening the airway

A victim is receiving emergency oxygen via nasal cannula. Which flow rate is most appropriate to use with this device?

4 LPM

A victim is receiving emergency oxygen that is attached to a BVM. The minimum appropriate flow rate is?

15 LPM

Which oxygen delivery device delivers the highest oxygen concentration to a victim?

BVM

When administering emergency oxygen to a victim, what is most important to do?

Ensure oxygen is flowing through the device before putting it on the victim

When administering emergency oxygen, which device is used to set the liters per minute?

Flow meter

You are administering emergency oxygen and need to verify that the oxygen is flowing. What should you do?

Listen for a hissing sound coming from the device

Which of the following is least likely to interfere with the accuracy of a pulse oximeter reading?

The victim is lying still

The pressure gauge on a cylinder reads 200 psi. What action is most appropriate?

Replace the cylinder with a new one

Which pulse oximeter reading indicates possible hypoxia?

92 percent SpO2

When giving ventilations through a resuscitation mask, how long should each ventilation last?

Approximately 1 second

After assembling the resuscitation mask, what should you do next?

Position the mask

When preparing to administer emergency oxygen and the pressure gauge reads 800 psi, what should you do?

Attach the delivery device to the current oxygen cylinder

A victim is receiving emergency oxygen through a non-rebreather mask. What flow rate is appropriate?

12 LPM

Your primary assessment shows a victim is having a breathing emergency and may be developing hypoxia. What is a likely sign?

Changes in consciousness

You are preparing to use a variable-flow-rate oxygen system. After checking the label and markings, what should you do first?

Clear the valve

A 75-year-old woman is conscious but having trouble breathing. After your primary assessment and calling for advanced help, what should you do?

Administer emergency oxyg