Exam 4: Administering Medical Gases: Regulators, Flowmeters, and

Theoretically,a nonrebreathing mask can deliver 100% oxygen,assuming that the mask fits appropriately on the patient's face and is the only source of gas being inhaled by the patient.However,in actual practice,the disposable nonrebreathing mask can deliver what percentage of FɪO₂?

In a typical adult partial rebreathing mask,the reservoir bag has an approximate volume capacity of _____ mL?

A patient is being administered supplemental oxygen with a 40% air-entrainment mask being powered with a flow of 6 L/min.The manufacturer recommends a flow of 4 L/min.Which of the following will occur with this change? 1)There will be an increase in the delivered FɪO₂. 2)There will be an increase in the total flow 3)There will be a decrease in the total flow 4)There will be no change in the FɪO₂.

What is the percentage of FɪO₂ for a patient on 3 L/min delivered through a nasal cannula?

It is important to filter the gas before it enters the blender housing; otherwise,a malfunction will occur.Which of the following can cause a malfunction? 1)Moisture 2)Particulate matter 3)High amounts of FɪO₂ 4)Low amounts of FɪO₂

A patient is receiving 0.60 FɪO₂ with a barometric pressure of 755 mm Hg.PCO₂ is 56 mm Hg and PaO₂ 65 mm Hg.The PAO₂ for this patient is _____ mm Hg.

A 60-year-old man with a 90 pack-years smoking history arrives in the emergency department on a nonrebreathing mask with an SpO₂ of 88%.The arterial blood gas results at this time indicate a pH of 7.38,PCO₂ of 58,and partial pressure of oxygen (PO₂)of 54.Which action should the respiratory therapist take at this time?

A 6-year-old patient with asthma has a sudden onset of SOB and wheezing.He presents to the emergency department with a heart rate of 82 beats/min,respiratory rate of 28 breaths/minute,and an SpO₂ of 87% on room air.Which of the following actions should the respiratory care practitioner take at this time? 1)Place the patient on oxygen therapy. 2)Intubate the patient. 3)Administer a bronchodilator. 4)Administer nitric oxide therapy.

All oxygen-delivery systems should be checked how often according to the AARC Clinical Practice Guideline (2002 Revision & Update)?

_____ therapy exposes patients to a pressure greater than atmospheric pressure while they breathe 100% oxygen,either continuously or intermittently.

The statement that is true concerning reservoir cannulas is which of the following?

The total flow for a 35% air-entrainment mask running at 10 L/min is _____ L/min.

In theory,a nasal cannula can deliver what amount of FɪO₂ to a patient?

The FɪO₂ that is actually delivered to the patient through an oxygen mask depends on which of the following? 1)Flow of the oxygen to the mask 2)Presence of a reservoir bag 3)Humidity of the gas 4)Density of the gas

The concentration of oxygen delivered to the patient with an air-entrainment mask depends on which of the following? 1)Flow of the oxygen exiting the jet nozzle 2)Size of the jet nozzle outlet 3)Size of the entrainment port 4)Size of the Venturi mask

Retinopathy of prematurity often occurs in neonates because of which of the following?

What types of patients are treated with hyperbaric oxygen therapy? 1)Deep sea diving patients with decompression sickness 2)Those with thermal injuries 3)Patients with carbon monoxide poisoning 4)Those with refractory osteomyelitis

Which of the following are O₂-conserving devices? 1)Transtracheal oxygen catheters 2)Reservoir cannulas 3)Pulse-demand oxygen-delivery systems 4)E size cylinder O₂ tanks

A home care patient calls to inform the respiratory therapist that his transtracheal catheter accidentally fell out last night and that he was unable to reinsert it.The patient should be told to:

An 18-year-old with severe asthma is brought into the emergency department on an nonrebreathing mask; he is in acute respiratory distress.He has been given multiple rounds of bronchodilators and corticosteroids and is still in distress,with an SpO₂ of 85% on the nonrebreathing mask.What therapy should the respiratory care practitioner suggest to the physician at this time?