Exam 38: Humidity and Bland Aerosol Therapy

Which of the following would indicate that administration of a bland water aerosol to a patient with postextubation upper airway edema was having the desired effect? 1) Decreased work of breathing 2) Improved vital signs 3) Decreased stridor or dyspnea 4) Improved O₂ saturation

What are some potential problems with manually refilled heated humidifier reservoirs? 1) Cross contamination and infection 2) Variable compliance or delivered volume 3) Delivery of dry and/or hot gases

Which of the following mean mass aerodynamic diameter (MMAD) aerosol suspensions is produced by an ultrasonic nebulizer operated at 1.25 MHz?

In checking a servo-controlled heated-wire humidifier system, you notice that a few drops of condensate tend to form but only near the patient's airway. Based on this observation, what can you conclude?

Which of the following are necessary features to look for in selecting a heated humidifier? 1) Water level readily visible 2) Over-temperature protection 3) Auditory and visual alarms 4) Minimal temperature overshoot

A patient with chronic obstructive pulmonary disease (COPD) is receiving heated water aerosol treatments through a jet nebulizer four times daily as a supplement to other bronchial hygiene measures designed to aid in mobilizing retained secretions. After each session, you notice the presence of moderate wheezing. Which of the following recommendations would you make to the physician?

For which of the following patients might you recommend administration of a hypertonic saline aerosol? 1) Acquired immune deficiency syndrome (AIDS) patient with severe pneumonia symptoms 2) Patient with a bypassed upper airway 3) Patient suspected of having tuberculosis

Key considerations in selecting or recommending humidity or bland aerosol therapy for a patient include which of the following? 1) Required gas flow 2) Presence of an artificial tracheal airway 3) Character of pulmonary secretions 4) Need for or duration of mechanical ventilation 5) Presence of heat and moisture exchanger (HME) contraindications

For which of the following patients would you select a heated humidifier? 1) Patient receiving O₂ through a bypassed upper airway 2) Patient receiving long-term mechanical ventilation 3) Patient receiving O₂ through an oronasal mask

What is the total water output of unheated large-volume jet nebulizers?

A patient receiving ventilatory support is being provided with humidification using a heat and moisture exchanger (HME). A physician orders a bronchodilator drug administered through a metered dose inhaler (MDI) via the ventilator circuit. Which of the following must be performed to ensure delivery of the drug to the patient?

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

Which of the following nebulizers uses a piezoelectric transducer to generate liquid particle aerosols?

Unheated bubble humidifiers are of limited effectiveness at flows above which of the following?

What is the primary goal of humidity therapy?

What are some types of passover humidifiers? 1) Simple reservoir 2) Membrane 3) Wick

A physician orders bland water aerosol administration to a patient with a tracheostomy. Which of the following airway devices could you use to meet this goal? 1) Tracheostomy mask 2) Face tent 3) T tube 4) Aerosol mask

The typical pressure pop-off incorporated into most simple bubble humidifiers releases pressure above which of the following?

Which of the following are components of an ultrasonic nebulizer? 1) Air-entrainment orifice 2) Radiofrequency generator 3) Nebulizer chamber 4) Piezoelectric transducer 5) Blower or fan

An ultrasonic nebulizer is not putting out any mist. After confirming (1) good electrical power supply (cord, plug, and circuit breakers are in good working order), (2) carrier gas is actually flowing through the device, and (3) the output control is set at maximum, what should you do?