Calculate the relative humidity for a gas that contains 18 mg/L of water at 25o C. The capacity of this gas is 23 mg/L at 25o C.
A. 92
B. 83
C. 78
D. 72
Q. 2 Which of the following conditions are complications of endotracheal suctioning? I. low vacuum pressures II. elevated intracranial pressure III. derecruitment IV. loss of mentation
A. I, III only
B. II, III only
C. II, IV only
D. II, III, IV only
Q. 3 The therapist has been asked to attempt to suction a patient's left mainstem bronchus. How should the therapist try to accomplish this task?
A. Simply insert the suction catheter as usual with the hope of entering the left mainstem bronchus.
B. Insert the suction catheter, and twirl it leftward while advancing the catheter downward.
C. Use a closed-circuit suction catheter system because this type suction system favors left mainstem bronchus suctioning.
D. Turn the patient's head to the right while advancing the suction catheter into the airway.
Q. 4 A mechanically ventilated patient becomes severely hypoxemic every time the therapist disconnects her from the ventilator for purpose of performing suctioning. What can the therapist do to avoid this situation?
A. Attach a closed-circuit suction catheter system to the patient's breathing circuit.
B. Hyperoxygenate the patient with an Fio2 of 1.0 before the suctioning procedure.
C. Limit the suction procedure to less than 10 seconds.
D. Reduce the vacuum pressure used during the suctioning procedure.
Q. 5 The therapist is performing endotracheal suctioning on a patient who has thick tracheobronchial secretions. The patient's nurse suggests that the therapist instill 5 ml of normal saline directly down the ETT to thin the patient's secretions. How should the therapist respond to this suggestion?
A. Comply with the nurse's suggestion.
B. Tactfully inform the nurse that 5 ml of sterile water would produce better results.
C. Enlighten the nurse that her suggestion has little to no merit.
D. Instill 10 ml of normal saline, instead of 5 ml.
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