Which receptors are primarily responsible for the initial increase in ventilation that occurs at the beginning of exercise?
a. Carotid chemoreceptors
b. Irritant receptors
c. J receptors
d. Proprioceptors
ANS: D
Proprioceptors in joints and tendons may be important in initiating and maintaining increased ventilation at the beginning of exercise.
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Which of the following limitations of respiratory protection may affect the ability to get a complete facepiece seal?
A. Unique facial features B. Psychological limitations C. Lack of physical condition D. Inadequate pulmonary capacity
The therapist is performing airway care on a mechanically ventilated patient who is intubated with a Hi-Lo Evac endotracheal tube. While checking the cuff pressure, the therapist notices that pressure manometer reads 30 cm H2O, and that the vacuum pressure gauge, providing continuous suction, indicates 100 mm Hg. Inspection of the mucous collector shows that it is empty. What should the therapist
do at this time? A. Inject 10 cm H2O into the cuff, and increase the vacuum pressure to 110 mm Hg. B. Decrease the cuff pressure by 10 cm H2O, and leave the vacuum pressure set at 100 mm Hg. C. Leave both the cuff pressure and vacuum pressure set at their respective levels. D. Leave the cuff pressure at 30 cm H2O, and decrease the vacuum pressure to 70 mm Hg.