TMC Exam C Questions with 100%
Correct Answers 2026
b. disconnected thermistor line Correct Answer>> While monitoring a
patient receiving mechanical ventilation, the respiratory therapist
notices the low-pressure and low exhaled volume alarms are sounding.
Which of the following could be the cause?
a. kinked endotracheal tube
b. disconnected thermistor line
c. excess water in the inspiratory limb of the circuit
d. herniated endotracheal tube cuff
a. a fracturein the plastic wye Correct Answer>> A patient receiving
positive pressure ventilation has a low-pressure alarm sounding. Which
of the following could be the cause?
a. a fracture in the plastic wye
b. herniated cuff
c. excess secretions in the airway
d. kinked ET tube
a. provide manual ventilation Correct Answer>> The high pressure
alarm is sounding on a patient receiving volume controlled ventilation.
The respiratory therapist should FIRST
a. provide manual ventilation
b. suction the patient
c. observe the alarm panel to determine source
d. cancel the alarm
d. Anectine (succinylcholine chloride) Correct Answer>> Which of the
following medications is shown to have sufficient affect when facial
muscle twitching is observed?
a. Halcion
,b. Curare (d-turbo curare)
c. Romazicon
d. Anectine (succinylcholine chloride)
d. respirometer Correct Answer>> A respiratory therapist is preparing to
measure SVC on a patient in the emergency department. Which of the
following equipment is required?
a. Collins water-seal spirometer
b. Geissler tube
c. Wheatstone bridge
d. respirometer
b. pressure manometer Correct Answer>> A respiratory therapist is
asked to determine a patient's inspiratory muscle strength. Which of the
following equipment is required for this evaluation?
a. Fleisch pneumotrachometer
b. pressure manometer
c. respirometer
d. peak flow meter
b. peak flow meter Correct Answer>> A respiratory therapist is ordered
to do a bedside assessment of the effectiveness of a bronchodilator on a
patient with an acute asthmatic episode. Which of the following
equipment will be needed to perform this evaluation?
a. maximum inspiratory pressure manometer
b. peak flow meter
c. Collins water-seal spirometer
d. respirometer
a. 25/8 mmHg Correct Answer>> Which of the following pressures
is most consistent with a normal pulmonary artery pressure (PAP)?
a. 25/8 mmHg
b. 12/8 mmHg
c. 120/80 mmHg
d. 25/4 mmHg
,d. change to an 80%/20% heliox mixture Correct Answer>> A patient
receiving heliox therapy at 70%/30% mixture by non-rebreathing mask
has the following arterial blood gas results:
pH 7.35 / PaCO2 45 / PaO2 110 / HCO3 24 / BE 0
Which of the following actions is appropriate?
a. change to a heliox mixture of 60%/40%
b. discontinue heliox therapy
c. switch to a partial rebreathing mask
d. change to an 80%/20% heliox mixture
c. use an air-entrainment mask set at 28% Correct Answer>> A COPD
patient complains of shortness of breath while exercising with a 2 L/min
nasal cannula. During exercise, SPO2 is noted to fall to 84%. Which of
the following would be most helpful to the patient during exercise?
a. decrease flow to 1 L/min nasal cannula
b. avoid exercising
c. use an air-entrainment mask set at 28%
d. use a non-rebreathing mask
a. place the patient on a non-rebreathing mask Correct Answer>> A
patient in the emergency room is receiving oxygen by nasal cannula at 3
L/min. Blood gases reveal the following:
pH 7.53 / PaCO2 30 / PaO2 51 / HCO3 23 / BE -1
The respiratory therapist should immediately
a. place the patient on a non-rebreathing mask
b. decrease flow to 1 L/min
c. increase flow to 5 L/min
d. place the patient on a Venturi mask at 40%
d. increase PEEP to 22 cmH2O Correct Answer>> An 80-kg (176-lb)
female patient is receiving mechanical ventilation on the following
settings:
Mode:
assist/control
Mandatory rate:
14/min Total
rate: 14/min
, VT: 550 mL
FiO2: 0.60
PEEP: 20 cmH2O
ABG:
pH 7.38 / PaCO2 42 / PaO2 62 / HCO3 26 / BE +2
The respiratory therapist should
a. increase the FIO2 to 0.7
b. order a chest radiograph
c. increase FiO2 to 1.0
d. increase PEEP to 22 cmH2O
b. increase flow to 15 L/min Correct Answer>> A patient is showing
signs of respiratory distress with a respiratory rate to 30/min and a
spontaneous tidal volume of 800 mL. The patient is receiving oxygen
at 60% by large volume nebulizer with the flow set at 10 L/min. The
respiratory therapist should suggest to
a. increase FiO2 to 1.0 and the flow to 15 L/min
b. increase flow to 15 L/min
c. sedate the patient
d. decrease the FiO2 to 0.50
d. decrease inspiratory time Correct Answer>> The physician orders a
change in I:E ratio from 1:2 to 1:4 for a COPD patient receiving volume-
cycled mechanical ventilation. Which of the following accommodates
the physician's request if the mandatory rate is not changed?
a. increase the inspiratory time
b. decrease the inspiratory flow rate
c. decrease expiratory time
d. decrease inspiratory time
a. autoPEEP Correct Answer>> For a patient receiving volume-
controlled ventilation in the assist/control mode, the starting of the
inhalation cycle before the expiratory flow rate returns to zero would
result in which of the following?
Correct Answers 2026
b. disconnected thermistor line Correct Answer>> While monitoring a
patient receiving mechanical ventilation, the respiratory therapist
notices the low-pressure and low exhaled volume alarms are sounding.
Which of the following could be the cause?
a. kinked endotracheal tube
b. disconnected thermistor line
c. excess water in the inspiratory limb of the circuit
d. herniated endotracheal tube cuff
a. a fracturein the plastic wye Correct Answer>> A patient receiving
positive pressure ventilation has a low-pressure alarm sounding. Which
of the following could be the cause?
a. a fracture in the plastic wye
b. herniated cuff
c. excess secretions in the airway
d. kinked ET tube
a. provide manual ventilation Correct Answer>> The high pressure
alarm is sounding on a patient receiving volume controlled ventilation.
The respiratory therapist should FIRST
a. provide manual ventilation
b. suction the patient
c. observe the alarm panel to determine source
d. cancel the alarm
d. Anectine (succinylcholine chloride) Correct Answer>> Which of the
following medications is shown to have sufficient affect when facial
muscle twitching is observed?
a. Halcion
,b. Curare (d-turbo curare)
c. Romazicon
d. Anectine (succinylcholine chloride)
d. respirometer Correct Answer>> A respiratory therapist is preparing to
measure SVC on a patient in the emergency department. Which of the
following equipment is required?
a. Collins water-seal spirometer
b. Geissler tube
c. Wheatstone bridge
d. respirometer
b. pressure manometer Correct Answer>> A respiratory therapist is
asked to determine a patient's inspiratory muscle strength. Which of the
following equipment is required for this evaluation?
a. Fleisch pneumotrachometer
b. pressure manometer
c. respirometer
d. peak flow meter
b. peak flow meter Correct Answer>> A respiratory therapist is ordered
to do a bedside assessment of the effectiveness of a bronchodilator on a
patient with an acute asthmatic episode. Which of the following
equipment will be needed to perform this evaluation?
a. maximum inspiratory pressure manometer
b. peak flow meter
c. Collins water-seal spirometer
d. respirometer
a. 25/8 mmHg Correct Answer>> Which of the following pressures
is most consistent with a normal pulmonary artery pressure (PAP)?
a. 25/8 mmHg
b. 12/8 mmHg
c. 120/80 mmHg
d. 25/4 mmHg
,d. change to an 80%/20% heliox mixture Correct Answer>> A patient
receiving heliox therapy at 70%/30% mixture by non-rebreathing mask
has the following arterial blood gas results:
pH 7.35 / PaCO2 45 / PaO2 110 / HCO3 24 / BE 0
Which of the following actions is appropriate?
a. change to a heliox mixture of 60%/40%
b. discontinue heliox therapy
c. switch to a partial rebreathing mask
d. change to an 80%/20% heliox mixture
c. use an air-entrainment mask set at 28% Correct Answer>> A COPD
patient complains of shortness of breath while exercising with a 2 L/min
nasal cannula. During exercise, SPO2 is noted to fall to 84%. Which of
the following would be most helpful to the patient during exercise?
a. decrease flow to 1 L/min nasal cannula
b. avoid exercising
c. use an air-entrainment mask set at 28%
d. use a non-rebreathing mask
a. place the patient on a non-rebreathing mask Correct Answer>> A
patient in the emergency room is receiving oxygen by nasal cannula at 3
L/min. Blood gases reveal the following:
pH 7.53 / PaCO2 30 / PaO2 51 / HCO3 23 / BE -1
The respiratory therapist should immediately
a. place the patient on a non-rebreathing mask
b. decrease flow to 1 L/min
c. increase flow to 5 L/min
d. place the patient on a Venturi mask at 40%
d. increase PEEP to 22 cmH2O Correct Answer>> An 80-kg (176-lb)
female patient is receiving mechanical ventilation on the following
settings:
Mode:
assist/control
Mandatory rate:
14/min Total
rate: 14/min
, VT: 550 mL
FiO2: 0.60
PEEP: 20 cmH2O
ABG:
pH 7.38 / PaCO2 42 / PaO2 62 / HCO3 26 / BE +2
The respiratory therapist should
a. increase the FIO2 to 0.7
b. order a chest radiograph
c. increase FiO2 to 1.0
d. increase PEEP to 22 cmH2O
b. increase flow to 15 L/min Correct Answer>> A patient is showing
signs of respiratory distress with a respiratory rate to 30/min and a
spontaneous tidal volume of 800 mL. The patient is receiving oxygen
at 60% by large volume nebulizer with the flow set at 10 L/min. The
respiratory therapist should suggest to
a. increase FiO2 to 1.0 and the flow to 15 L/min
b. increase flow to 15 L/min
c. sedate the patient
d. decrease the FiO2 to 0.50
d. decrease inspiratory time Correct Answer>> The physician orders a
change in I:E ratio from 1:2 to 1:4 for a COPD patient receiving volume-
cycled mechanical ventilation. Which of the following accommodates
the physician's request if the mandatory rate is not changed?
a. increase the inspiratory time
b. decrease the inspiratory flow rate
c. decrease expiratory time
d. decrease inspiratory time
a. autoPEEP Correct Answer>> For a patient receiving volume-
controlled ventilation in the assist/control mode, the starting of the
inhalation cycle before the expiratory flow rate returns to zero would
result in which of the following?
