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TMC Practice Exam B 2026–2027 | NBRC Respiratory Therapy Practice Questions & Verified Answers | Complete TMC Certification Exam Prep

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Prepare for the NBRC Therapist Multiple-Choice (TMC) Examination with this comprehensive TMC Practice Exam B 2026–2027 resource featuring practice questions and verified answers. The material is designed to reinforce essential respiratory care concepts, including patient assessment, respiratory mechanics, oxygen therapy, airway management, mechanical ventilation, arterial blood gas interpretation, acid-base balance, pulmonary function testing, cardiopulmonary physiology, pharmacology, neonatal and pediatric respiratory care, emergency procedures, and clinical decision-making. Ideal for respiratory therapy students, respiratory care practitioners, and candidates preparing for the NBRC TMC examination and respiratory therapy credentialing assessments. Designed to strengthen clinical reasoning, reinforce core respiratory care knowledge, and improve readiness for the TMC certification exam.

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TMC Practice Exam B
After a patient undergoes a thoracentesis, the respiratory B.
therapist notes that the obtained pleural fluid is clear with
a slight straw color. This fluid is most likely the result of

A. empyema.
B. congestive heart failure.
C. lung carcinoma.
D. hemothorax.


Which of the following would be most important to B.
evaluate for a patient who is entering a smoking
cessation program?


A. Height
B. Smoking history
C. Weight
D. Diet


The respiratory therapist is calibrating a spirometer and D.
checking the volume with a 3.0 liter super syringe. The
volumes recorded are: 2.85 L, 2.8 L, and 2.8 L. Based
upon the information obtained which of the following is a
correct statement?


A. Another syringe needs to be used
B. Spirometer is accurate
C. The plunger was advanced too slowly
D. Spirometer may have a leak


Which of the following is an indication for high frequency A.
jet ventilation?

A. Bronchopleural fistula
B. Wilson Mikity syndrome
C. Necrotizing lesion of right lung
D. Centrilobular emphysema


A 43-year-old female patient has just undergone a total B.
abdominal hysterectomy. The patient arrives in the post
anesthesia care unit obtunded with minimal response to
painful stimulus. What treatment should the respiratory
therapist recommend for this patient?

A. Initiate assisted ventilation
B. Insert oropharyngeal airway
C. Obtain positron emission tomography
D. Initiate noninvasive capnography


A 44 week gestational age infant has just been delivered B
via C-section and is gasping, grunting, and has
tachycardia and tachypnea. At one minute his Apgar
score is 4 and at 5 minutes the score is 5. The infant is
most likely suffering from

A. transient tachypnea of the newborn.
B. meconium aspiration.
C. bronchopulmonary dysplasia.
D. apnea of prematurity.


What is the normal VD/VT ratio for a patient breathing B.
room air?

A. 5 - 15%
B. 20 - 40%
C. 45 - 55%
D. 65 - 75%

, TMC Practice Exam B
A heat moisture exchanger is indicated for humidification B.
in which of the following situations?

A. Mechanical ventilation in a long-term care facility.
B. Transport to a tertiary care center.
C. Patient with tenacious secretions.
D. Delivery of aerosolized bronchodilators.


All of the following could cause a patient's right- B.
hemidiaphragm to be elevated, EXCEPT


A. right lower lobe atelectasis.
B. right side hyperlucency, absent vascular markings.
C. hepatomegaly.
D. right lower lobe consolidation with air bronchograms.


A 64-year-old, 70 kg (154 lb) man with severe COPD is B.
receiving independent (differential) lung ventilation
following thoracotomy and right lower lobectomy. Which
of the following setting combinations would be most
appropriate for this patient?

A. Right lung 50 mL; left lung 650 mL
B. Right lung 150 mL; left lung 550 mL
C. Right lung 350 mL; left lung 350 mL
D. Right lung 550 mL; left lung 150 mL


A patient in the intensive care unit has the following C.
hemodynamic measurements:

CVP (mm Hg) 5
PAP (mm Hg) 29/8
PCWP (mm Hg) 8
BP (mm Hg) 130/70
Cardiac output (L/min) 5.1
Cardiac index (L/min/m2) 2.7

What is the pulse pressure?


A. 15 mm Hg
B. 21 mm Hg
C. 60 mm Hg
D. 90 mm Hg


A 2-year-old child with croup has been intubated for 4 D
days with a 4 mm ID uncuffed endotracheal tube. Heated
aerosol at an FIO2 of 0.30 has been delivered to the
patient. The physician asks the respiratory therapist to
evaluate the patient for possible extubation. Which of the
following would most likely indicate that the patient is
ready for extubation?

A. The patient is making normal quiet ventilatory efforts.
B. A negative sputum culture and sensitivity has been
reported.
C. The patient's ABG are within normal range.
D. Breath sounds are heard around the tube on
auscultation.


A patient is seen in the Emergency Department for B.
complaints of nausea and vomiting. A nasogastric tube
has been inserted and the patient is started on lasix.
Which of the following should the respiratory therapist
monitor?

A. Cardiac enzymes
B. Serum electrolytes
C. Arterial blood gases
D. Cell hydration level

, TMC Practice Exam B
While instructing a patient prior to a vital capacity B.
maneuver, the respiratory therapist should direct the
patient to


A. exhale to residual volume and inhale to inspiratory
capacity.
B. inhale to total lung capacity then exhale to residual
volume.
C. exhale normally then inhale to total lung capacity.
D. inhale normally then exhale to functional residual
capacity.


A patient involved in an automobile accident is brought to B.
the ED with tachypnea, tracheal deviation to the right,
splinting, asymmetrical chest movement, and decreased
breath sounds on the left side. The respiratory therapist
should initially

A. insert a chest tube.
B. administer 100% oxygen via mask.
C. perform endotracheal intubation.
D. initiate non-invasive positive pressure ventilation.


A 77-year-old male patient is admitted to the emergency A.
room with shortness of breath, fine basilar crackles, +2
pitting edema and a chest radiogram with a butterfly
pattern. These results are most consistent with which of
the following?

A. Pulmonary edema
B. Pulmonary interstitial emphysema
C. Pneumothorax
D. Emphysema


Which of the following formulas will determine the total D.
flow being delivered to a patient with a 28% venturi mask
running at 6 L/min?

A. total flow = 6 x 2
B. total flow = 6 x 4
C. total flow = 6 x 5
D. total flow = 6 x 11


Fine crepitant crackles are most commonly associated B.
with which of the following conditions?

A. Bronchitis
B. Pulmonary edema
C. Pneumonia
D. Foreign body aspiration


A patient with end-stage pulmonary fibrosis is receiving D.
oxygen at 2 L/min via a transtracheal oxygen catheter.
The patient experiences an increased work of breathing
and shortness of breath. The respiratory therapist should

A. manually ventilate the patient with a resuscitation bag.
B. increase the flow to the transtracheal catheter to 6
L/min.
C. evaluate the SpO2 with a pulse oximeter.
D. flush the transtracheal device with isotonic saline.


During bedside monitoring the respiratory therapist B.
notices a dampened waveform on the arterial line
graphic. To restore the graphic to normal, the therapist
should first

A. verify the position of the transducer.
B. check the transducer dome for air bubbles.
C. flush the catheter with heparin solution.
D. attempt to draw blood from the arterial line.

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