TMC # 3 Study Set
with correct answers
2025/2026
A 36-week gestation, 4-hour post-delivery neonate has the following arterial blood gas results
while on a 35% oxy hood:
pH: 7.34
PaCO2: 47 mmHg
PaO2: 57 mmHg
HCO3-: 25 mEq/L
On the basis of these results, the respiratory therapist should recommend which of the
following? - correct answersMaintain current therapy and continue to monitor
A patient with ARDS is to be given a treatment for the prevention of Pneumocystis carinii
pneumonia. Which of the following is the most appropriate therapy for this patient? - correct
answerspentamidine (NebuPent) via RespirGard II nebulizer every 4 weeks
An intubated patient is being mechanically ventilated via a volume ventilator. The physician has
asked the respiratory therapist to start weaning the patient from the ventilator. Which of the
following modes of ventilatory support would be appropriate at this time? - correct answers# 2.
A/C mode : No, SIMV mode: Yes, IRV mode: No, PSV: Yes
,An adult patient being treated in the ED is receiving oxygen by nasal cannula at 5 L/min. Over
the last one hour, the patient's respirations have become irregular and shallow. Arterial blood
gas values are as follows:
pH: 7.24
PaCO2: 86 mmHg
PaO2: 89 mmHg
HCO3-: 36 mEq/L
The most appropriate recommendation is to: - correct answersDecrease the oxygen liter flow
A respiratory therapist is asked to assess an outpatient with a history of CO2 retention and air
trapping. While assessing the patient, he complains that he has become increasingly short of
breath and has difficulty coughing up secretions. Upon auscultation, the therapist notes
scattered coarse and an occasional expiratory wheezes. Which of the following would be the
most appropriate therapy for this patient? - correct answersAerosol bronchodilator with PEP
therapy
A 28 week gestation neonate is being manually ventilated following delivery. Chest excursion is
poor despite manual ventilation with high peak pressures. Which of the following is the most
appropriate action at this time? - correct answersIntubate the patient
Following a traumatic nasal intubation, the patient begins to bleed profusely from the
nasopharynx. The respiratory therapist should: - correct answersKeep the nasotracheal tube's
cuff inflated and suction the pharynx as needed
A patient's PaO2 measured by blood gas analysis is 255 mmHg. The blood gas analyzer on which
sample was analyzed is calibrated to a PaO2 of 150 mmHg. Which of the following is the most
acceptable action? - correct answersRecalibrate the blood gas analyzer to accommodate this
unusual value
, An adult patient is orally intubated and receiving continuous mechanical ventilation. While
performing a routine cuff pressure measurement, the respiratory therapist observes that the
cuff pressure manometer's indicator needle continuously reads zero pressure. No ventilator
alarms are activated and the patient appears to be resting comfortably. The respiratory
therapist should do which of the following to correct this situation. - correct answersReplace the
cuff pressure manometer
A patient in the intensive care unit requires aggressive fluid and electrolyte replacement
therapy. Implementation of which of the following would be the most appropriate to evaluate
the effectiveness of this therapy? - correct answersECG monitoring
The data obtained from an orally intubated, mechanically ventilated adult patient are as follows:
8:00 am 10:00 am
Mode: SIMV SIMV
VT: 470 mL 470 mL
Rate: 14 /min. 14/min.
PetCO2: 36 mmHg 44 mmHg
PaCo2: 38 mmHg 46 mmHg
SpO2: 92% 91%
SaO2: 95% 95%
Which of the following best explains these data? - correct answersAlveolar ventilation has
decreased
An orally intubated 18-year-old male was brought to the ED by EMS. A cuff pressure reading of 4
cmH20 was recorded at the time of initial assessment. The most likely finding of this cuff
pressure is: - correct answersThe patient is at high risk for aspiration
If the airway resistance of a patient who is being mechanically ventilated via a volume ventilator
increases, which of the following would also increase? - correct answersPeak pressure
with correct answers
2025/2026
A 36-week gestation, 4-hour post-delivery neonate has the following arterial blood gas results
while on a 35% oxy hood:
pH: 7.34
PaCO2: 47 mmHg
PaO2: 57 mmHg
HCO3-: 25 mEq/L
On the basis of these results, the respiratory therapist should recommend which of the
following? - correct answersMaintain current therapy and continue to monitor
A patient with ARDS is to be given a treatment for the prevention of Pneumocystis carinii
pneumonia. Which of the following is the most appropriate therapy for this patient? - correct
answerspentamidine (NebuPent) via RespirGard II nebulizer every 4 weeks
An intubated patient is being mechanically ventilated via a volume ventilator. The physician has
asked the respiratory therapist to start weaning the patient from the ventilator. Which of the
following modes of ventilatory support would be appropriate at this time? - correct answers# 2.
A/C mode : No, SIMV mode: Yes, IRV mode: No, PSV: Yes
,An adult patient being treated in the ED is receiving oxygen by nasal cannula at 5 L/min. Over
the last one hour, the patient's respirations have become irregular and shallow. Arterial blood
gas values are as follows:
pH: 7.24
PaCO2: 86 mmHg
PaO2: 89 mmHg
HCO3-: 36 mEq/L
The most appropriate recommendation is to: - correct answersDecrease the oxygen liter flow
A respiratory therapist is asked to assess an outpatient with a history of CO2 retention and air
trapping. While assessing the patient, he complains that he has become increasingly short of
breath and has difficulty coughing up secretions. Upon auscultation, the therapist notes
scattered coarse and an occasional expiratory wheezes. Which of the following would be the
most appropriate therapy for this patient? - correct answersAerosol bronchodilator with PEP
therapy
A 28 week gestation neonate is being manually ventilated following delivery. Chest excursion is
poor despite manual ventilation with high peak pressures. Which of the following is the most
appropriate action at this time? - correct answersIntubate the patient
Following a traumatic nasal intubation, the patient begins to bleed profusely from the
nasopharynx. The respiratory therapist should: - correct answersKeep the nasotracheal tube's
cuff inflated and suction the pharynx as needed
A patient's PaO2 measured by blood gas analysis is 255 mmHg. The blood gas analyzer on which
sample was analyzed is calibrated to a PaO2 of 150 mmHg. Which of the following is the most
acceptable action? - correct answersRecalibrate the blood gas analyzer to accommodate this
unusual value
, An adult patient is orally intubated and receiving continuous mechanical ventilation. While
performing a routine cuff pressure measurement, the respiratory therapist observes that the
cuff pressure manometer's indicator needle continuously reads zero pressure. No ventilator
alarms are activated and the patient appears to be resting comfortably. The respiratory
therapist should do which of the following to correct this situation. - correct answersReplace the
cuff pressure manometer
A patient in the intensive care unit requires aggressive fluid and electrolyte replacement
therapy. Implementation of which of the following would be the most appropriate to evaluate
the effectiveness of this therapy? - correct answersECG monitoring
The data obtained from an orally intubated, mechanically ventilated adult patient are as follows:
8:00 am 10:00 am
Mode: SIMV SIMV
VT: 470 mL 470 mL
Rate: 14 /min. 14/min.
PetCO2: 36 mmHg 44 mmHg
PaCo2: 38 mmHg 46 mmHg
SpO2: 92% 91%
SaO2: 95% 95%
Which of the following best explains these data? - correct answersAlveolar ventilation has
decreased
An orally intubated 18-year-old male was brought to the ED by EMS. A cuff pressure reading of 4
cmH20 was recorded at the time of initial assessment. The most likely finding of this cuff
pressure is: - correct answersThe patient is at high risk for aspiration
If the airway resistance of a patient who is being mechanically ventilated via a volume ventilator
increases, which of the following would also increase? - correct answersPeak pressure
