comprehensive 140 questions and verified
detailed solutions (MULTIPLE CHOICES)
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A 12-year-old child is receiving IPPB therapy by mouthpiece. The machine continually
fails to cycle on both the inhalation and exhalation phases. The first step the therapist
should take to resolve the problem is to
A. switch to a larger mouthpiece
B. decrease inspiratory pressure
C. decrease sensitivity
D. utilize nose clips - CORRECT ANSWER: The correct answer is : D
A 30-weeks of gestation infant is receiving mechanical ventilatory support with a time-
cycled, pressure-limited ventilator at the following settings:
PIP 35 cm H2O
Rate 28
FIO2 0.4
PEEP 4 cm H2O
I-time 0.75 sec
The respiratory therapist notices the pressure manometer does not rise to the set
pressure during each inspiration. Which of the following is the most likely cause?
A. the pressure-limiting pop-off valve is set to low
B. internal flow rate is too high
C. rate is insufficient
D. set pressure exceeds the pressure capability of the ventilator - CORRECT
ANSWER: The correct answer is : A
,A 31-week-gestional age infant has a respiratory rate of 30/min and a heart rate of
70/min while breathing room air. Five minutes after birth, the infant is acrocyanotic and
has a weak cry. Following suctioning of the oropharynx the respiratory therapist should
A. place the infant in an oxyhood at FIO2 0.40
B. administer Atropine sulfate
C. begin chest compressions
D. provide manual ventilation with the bag-valve - CORRECT ANSWER: The correct
answer is : D
A 32-week gestational age infant is receiving supplemental oxygen by oxyhood with an
oxygen blender set at 40% and a heated aerosol. The oxygen analyzer fuel cell is
placed near the infant's mouth and FIO2 is determined to be 35%. The physician would
like to confirm the patient's oxygenation status. The respiratory therapist should
evaluate
A. Capillary blood gas
B. PetCO2
C. Pulse oximetery
D. COHb - CORRECT ANSWER: The correct answer is : C
A 32-year-old 81-kg (178-lb) adult male is receiving mechanical ventilatory support.
Settings are as follows:
Mode Assist/control
Mandatory rate 10
Total rate 18
Tidal volume 450 mL
FIO2 0.6
PEEP 5 cm H2O
The patient is cyanotic and anxious. Which of the following will the respiratory therapist
recommend?
,A. increase FIO2
B. decrease mandatory rate
C. increase tidal volume
D. increase inspiratory flow rate - CORRECT ANSWER: The correct answer is : C
A 38-week gestational age infant is to receive oxygen therapy by a blender set at 100%
with a heated large-volume nebulizer. To ensure the delivery of the ordered FIO2, the
respiratory therapist should properly set the nebulizer FIO2 to
A. 100%
B. 50%
C. 0%
D. 21% - CORRECT ANSWER: The correct answer is : A
A 4-year old child was playing with toys when he suddenly became tachypneic.
Auscultation reveals wheezing on the right side. Which of the following should the
respiratory therapist prepare?
A. aerosolized Lidocaine
B. racemic epinephrine
C. a bronchoscope
D. an Albuterol treatment - CORRECT ANSWER: The correct answer is : C
A 62-year-old man admitted to the emergency room with chest pain complains of
shortness of breath after a bronchodilator treatment. Further examination reveals the
patient is diaphoretic. The ECG wave form shows occasional PVCs. Which of the
following would be most helpful in further determining the cause of the patient's
condition?
A. 12-lead ECG
B. cardiac stress test with Adenosine
C. cardiac catheterization with fluoroscopy
D. arterial blood gas analysis - CORRECT ANSWER: The correct answer is : A
, A 75-kg (165-lb) male is receiving mechanical ventilation by a volume-controlled
ventilator in the assist/control mode on the following settings:
Mandatory rate 12/min
VT 500 mL
FIO2 0.6
PEEP 8 cm H2O
Arterial blood gas results:
pH 7.30
PaCO2 52 mm Hg
PO2 65 mm Hg
HCO3- 27 mEq/L
BE +3 mEq/L
Which of the following represents the most appropriate action?
A. increase FIO2 to 1.0
B. increase rate to 14
C. increase PEEP to 10 cmH2O
D. increase tidal volume to 600 mL - CORRECT ANSWER: The correct answer is : B
A 90-kg male patient with a traumatic chest injury is receiving volume-controlled A/C
ventilation with an F102 of 0.5, a set rate of 18, and a tidal volume of 600 mL. Due to
patient triggering of machine breaths, the total respiratory rate is 28—30/min. Results of
an arterial blood gas analysis are as follows:
pH 7.52
PaC02 28 torr
HC03 22 mEq/L
BE -2
Pa02 81 torr