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

Which types of devices/techniques should be used to monitor the oxygenation status of patients undergoing hyperbaric oxygen therapy? 1)Transcutaneous monitoring 2)Arterial blood gas monitoring 3)End-tidal CO₂ monitoring 4)Spirometer

Which of the following are disadvantages of the nasal cannula? 1)Pressure necrosis 2)Drying nasal mucosa 3)FɪO₂ not precise 4)Claustrophobia

A 45-year-old man had a deep sea diving accident recently and developed air emboli.Which type of therapy should the therapist recommend at this time?

What device helps reduce high-pressure gases from cylinders or bulk storage units to a lower working pressure?

Dalton's law states that:

A float that jumps and falls to zero when the needle valve is closed and is attached to a bulk system is indicative of a _____ flowmeter.

A patient is placed on a 70:30 heliox mixture at a flow of 8 L/min.The actual flow rate going to the patient is ____ L/min.

Current incubators are designed to allow all of the following,except:

Which of the following are the potential harmful effects of excessive amounts of oxygen therapy? 1)Persistent pulmonary hypertension 2)Oxygen-induced hypoventilation 3)Absorption atelectasis 4)Retinopathy or prematurity

Which device uses the following principle? As the driving pressure is increased,the flow from the flowmeter outlet increases.

What is (are)the type(s)of flow restrictor(s)? 1)Fixed-orifice 2)Adjustable,multiple-orifices 3)Compensated orifice 4)Non-compensated orifice

A pediatric patient with refractory croup is placed on heliox 80:20 at a flow of 10 L/min.The actual flow going to the patient is _____ L/min.

A patient with chronic bronchitis comes to your emergency department; she is discovered to have a pulse oximetry oxygen saturation (SpO₂)of 78% with room air.On the basis of these data,which oxygen-delivery device would you use with the patient?

Patients exposed to FɪO₂ greater than or equal to 50% are at risk for which of the following? 1)Chronic obstructive pulmonary disease 2)O₂ toxicity 3)Permanent lung damage 4)Atelectasis

The gas flow into the high-pressure side regulator is dependent on what two opposing forces? 1)Gas pressure above the diaphragm 2)Gas pressure at the diaphragm 3)Spring tension below the diaphragm 4)Spring tension above the diaphragm

An oxygen _____ compresses air and oxygen from a high-pressure source into a chamber where the pressure of the two gases is equalized,usually at 50 psi.

______ law states that the degree to which a gas enters into a physical solution in body fluids is directly proportional to the partial pressure of gas to which the fluid is exposed?

With oxygen hoods,FɪO₂ must be measured by using what type of device?

A 22-year-old with asthma comes to the emergency department in respiratory distress.The patient has acute shortness of breath (SOB); is febrile,tachypneic,and tachycardic; and has an SpO₂ of 88% on a nasal cannula that delivers 2 L/min.Which of the following actions should the respiratory therapist take at this time?

How many liters/minute of air is being entrained for a 50% air-entrainment mask running at 8 L/min?