Which of the following is an advantage of using a nasopharyngeal airway(NPA)?

• It eliminates the need for manual positioning of the patient's head to keep the airway open.

• It may be tolerated by many patients with a gag reflex.

• It is ideal for patients with a suspected skull fracture.

• All of the above.

The trachea branches off at the __________ and forms two mainstem bronchi.

• carina

• alveoli

• bronchioles

• pleura

Which of the following is disadvantage of the oropharyngeal airways (OPAs)?

• They cannot be used in patients with a suspected skull fracture.

• They cannot be used in a patient with a gag reflex.

• They require the use of a water-soluble lubricant.

• They do not come in pediatric sizes.

All of the following can result in airway obstructions, except;

• burns.

• the tongue.

• facial trauma.

• infections.

Perhaps the simplest way to determine if a patient has a patent airway is to:

• check for adequate chest rise.

• say "hello."

• determine a respiratory rate.

• auscultate foe breath sounds.

Which of the following oxygen cylinders would normally run out after 50 minutes when flowing at 10 liters per minute?

• D tank

• G tank

• E tank

• M tank

The safe residual for an oxygen cylinder is ________ psi.

• 300

• 1,000

• 500

• 200

Which of the following colors identifies an oxygen cylinders?

• Orange and red

• Blue and yellow

• Green and white

• Black and tan

You are aggressively ventilating an adult patient with a bag-valve mask when you notice that his previously strong pulse is getting weaker. You should:

• begin chest compressions.

• increase the concentration of oxygen.

• reduce the volume of the ventilations.

• reduce the concentration of oxygen.

Of the three types of oxygen flowmeters, Which one can only be used upright?

• Constant flow selector valve

• Pressure-compensated flowmeter

• Hudson gauge flowmeter

• Bourdon gauge flowmeter