Exam 35: Humidity and Bland Aerosol Therapy

Which of the following inspired conditions should be maintained when delivering medical gases directly into the trachea through an endotracheal tube or a tracheotomy tube?

Characteristics of a servo-controlled heated humidifier include all of the following except:

What is the simplest way to increase the humidity output of a humidifier?

Which of the following is a common way to increase the surface area ratio of humidifiers? I. Generate a water droplet aerosol. II. Expose the gas to a saturated wick. III. Use a bubble or diffusion head.

Indications for warming inspired gases include all of the following except:

All mist tents prevent CO₂ buildup by what process?

Which of the following is false about a simple heated humidifier (one that does not incorporate a servocontrol mechanism)?

After administering a 30-minute bland water aerosol treatment to a dehydrated elderly patient with chronic bronchitis, you note increased wheezing and a general decrease in the intensity of breath sounds. Which of the following has probably occurred?

What is the point in the respiratory track where inspired gas reaches body temperature, ambient pressure, saturated (BTPS) conditions?

For which of the following patients would you select a heated humidifier? I.patient receiving oxygen through a bypassed upper airway II.patient receiving long-term mechanical ventilation III.patient receiving oxygen through an oronasal mask

All of the following indicate a potential need for administration of a water or isotonic saline aerosol except:

For what should sputum collected by aerosol therapy induction be inspected? I.color II.volume III.odor IV.consistency

Gas leaving an unheated humidifier at 10° C and 100% relative humidity (absolute humidity = 9.4 mg/L) would provide what relative humidity at body temperature?

What is the goal of using an unheated bubble humidifier with oronasal oxygen delivery systems?

Which of the following types of humidifiers are used in clinical practice? I.heat-moisture exchanger II.passover humidifier III.bubble humidifier

What is the most common device used to generate bland aerosols?

Advantages of passover humidifiers include all of the following except:

For which of the following patients would you NOT recommend bland aerosol therapy administration? I.patient with a history of airway hyperresponsiveness II.patient with a bypassed upper airway III.patient with active bronchoconstriction

To protect against obstructed or kinked tubing, simple bubble humidifiers incorporate which of the following?

Which of the following inspired conditions should be maintained when delivering medical gases to the hypopharynx, as when administering oxygen by nasal catheter?