CERTIFIED RESPIRATORY THERAPIST
CRT NEWEST ACTUAL EXAM
PRACTICE TEST WITH DETAILED
CORREC ANSWERS WITH RATIONALES
| 2025 STUDYGUIDE
1. All of the following are true statements regarding the
use of an oropharyngeal airway EXCEPT:
a. An oropharyngeal airway that is too large may obstruct
the airway
b. An oropharyngeal airway is contraindicated for use in
unconscious patients
c. An oropharyngeal airway may induce gagging and
vomiting
d. An oropharyngeal airway that is too small may obstruct
the airway Correct Answer ANS: B.
EX: An oropharyngeal airway is NOT contraindicated
for use in unconscious patients. Airway is not
contraindicated for use in an unconscious patient,
only an alert patient. The distal tip of the
oropharyngeal airway may irritate the hypopharyngeal
area and induce gagging and vomiting. If an
ororpharyngeal airway is too large the distal tip may
obstruct the hypopharyngeal area, resulting in airway
obstruction. If an oropharyngeal airway is too small
the distal tip may push the tongue the back of the
throat, resulting in airway obstruction.
,2 Which of the following would the respiratory therapist
normally observe if a conscious patient were breathing in
the assist/control mode of ventilator support?
1. A slight drop in pressure before each patient triggered
breath
2. A fixed or constant length of expiration
3. a variable time interval between breaths
A. 2 only
B. 2 and 3 only
C. 1, 2, and 3
D. 1 and 3 only Correct Answer ANS: D
EX: 1. True - patient initiated breaths are normally
observed by a slight dip in inspiratory pressure just
prior to the start of mechanical breath. 2. False - the
length of expiration is variable. 3. True - with patient
initiated breaths mixed with timed breaths, the time
interval would be variable between breaths, not
constant.
3 An intubated mechanically ventilated asthmatic patient is
struggling to initiate inspiration while in the assist/control
mode. Which of the following ventilator settings should the
respiratory therapist first check to determine the cause of
this problem?
a. The pressure limit
b. The PEEP control
c. The tidal volume
d. The sensitivity Correct Answer ANS: D
EX: In this situation, the inspiratory threshold is set
too low, adjustment of the sensitivity setting should
be done.
,4 Which of the following would be an appropriate
recommendation for an intubated mechanically ventilated
patient receiving an FIO2 of 0.80 and PEEP of 10cm H2O
whose clinical condition begins to improve as evidenced
by chest x-ray , physical examination, and arterial blood
gas values?
a. Lower the inspiratory flow rate
b. Decrease the ventilatory rate
c. Decrease the FIO2
d. Remove PEEP Correct Answer ANS: C
EX: In this situation an FIO2 of. 80 is unwarranted and
should be lowered before adjusting any other
ventilatory parameter.
5 Which of the following breathing patterns help to
optimize aerosol drug deposition of the deeper recesses of
the lungs?
1. Mouth breathing
2. Rapid, deep inspirations
3. Inspiratory pause
4. Pursed-lip breathing
A. 2 and 3 only
B. 1 and 2 only
C. 1, 3, and 4 only
D. 1, 2 ,3 and 4 Correct Answer ANS: C
To optimize aerosol drug deposition to the deeper
recesses of the lungs, a patient should be instructed
to take slow, deep inspirations through the mouth,
pause at peak inspiration then slowly exhale trough
pursed lips.
, 6 Which of the following patients should the respiratory
therapist recommend immediate intubation?
A. a patient experiencing an acute episode of
bronchospasm
B. patient with thickened, retained secretions
C. patient with epiglottis
D. patient with post-extubation stridor Correct Answer
ANS: C
EX: of the patient conditions listed, only epiglottitis,
because of its life-threatening natured, requires
immediate intubation.
7 Which of the following factors will cause the FIO2 of the
high-flow oxygen delivery device to decrease?
1. A shallow tidal volume
2. A decreased minute ventilation
3. A rapid respiratory rate
4. A malfunctioning air-entrainment port
a. 2 and 3 only
b. 1 and 4 only
c. 4 only
d. 1, 2, 3, and 4 Correct Answer ANS: C
EX: A shallow tidal volume, decreased minute
ventilation, and a rapid respiratory rate will not affect
the oxygen delivery from a high-flow oxygen deliver y
device while a malfunctioning air-entrainment port can
cause alterations in the oxygen delivery.
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