Which type of ventilator creates a sinusoidal pressure waveform pattern of positive and negative pressures?
a. Fluidic c. Positive-pressure
b. Pneumatic d. Combined-pressure
ANS: D
A combined-pressure device, such as a high-frequency oscillator, produces oscillating gas pres-sure waveforms at the upper airway, producing a waveform that is sinusoidal, with posi-tive-pressure and negative-pressure oscillations produced at the upper airway.
You might also like to view...
Why are the extension arm and yoke of the x-ray machine insulated?
What will be an ideal response?
Recycling in the work setting should include
A. latex and vinyl gloves. B. purchase of virgin paper products. C. hazardous materials. D. all paper except some fax papers.
Evisceration of an abdominal wound is:
a. filling in of a wound from bottom up b. excessive scar formation after surgery c. protrusion of viscera through all tissue layers d. single- or multi-layer separation of wound edges
In an interview situation, you should not answer questions about your personal life unless the answer demonstrates an ability to perform the job
Indicate whether the statement is true or false