NBRC MOCK TMC EXAM NEWEST 2025 ACTUAL E XAM

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NBRC MOCK TMC EXAM NEWEST 2025 ACTUAL E XAM

TEST BANK| COMPLETE 200 REAL EXAM QUESTIONS AND

CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)

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A patient is receiving 30% oxygen via an air-entrainment mask at a flow of 5 L/min. The total flow delivered by this device is which of the following?

• 36 L/min
• 45 L/min
• 54 L/min
• 60 L/min (*Use 21 with O2 % less than 40%)

(100- 30%)/ (30%-*21) = 70/9 = 8/1 or 8:1 ratio

8+1= 9

9x5 = 45 L/min - Correct Answer - B. 45 L/min

Secretions tend to become thicker if the inspired air has which of the following characteristics?

• A relative humidity of 100% at body temperature
• 32 mg H2O per liter of gas
• A water vapor pressure of 47 mmHg
• 48 mg H2O per liter of gas - Correct Answer - B. 32 mg H2O per liter

of gas

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pg. 2 A patient receiving 38 mg H2O per liter of gas from a nebulizer has a humidity deficit of which of the following?

• 6 mg/L
• 9 mg/L
• 12 mg/L
• 18 mg/L - Correct Answer - 44-38= 6
• 6 mg/L

You notice that the patient's secretions have become thicker and more difficult to suction since the ventilator humidifier was replaced with an HME. The RT should recommend which of the following?

• Increase inspiratory flow
• Decrease the temperature to the HME
• Replace with a new HME
• Replace the HME with a conventional heated humidifier - Correct

Answer - D. Replace the HME with a conventional heated humidifier

An autoimmune compromised patient is to be placed on oxygen with a humidity/aerosol device. Which of the following devices is most likely to deliver contaminated water to the patient?

• Heated cascade humidifier
• Bubble humidifier
• Heated wick humidifier
• Heated jet nebulizer - Correct Answer - D. Heated jet nebulizer 2 / 4

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pg. 3 To minimize an increased airway resistance produced by high-density aerosol inhalation, the RT should recommend which of the following?

• Administer a bronchodilator along with the aerosol
• Instruct the patient to breathe through the nose
• Use a heated nebulizer to deliver the aerosol
• Perform chest physiotherapy after the aerosol treatment - Correct

Answer - A. Administer a bronchodilator along with the aerosol

The RT is asked to recommend a humidifier that will be able to provide the highest water vapor content to the patient's airway. Which of the following humidifiers should the therapist select?

• Pass-over

B. HME

• Heated wick
• Bubble - Correct Answer - C. Heated wick

A heated humidifier is delivering 100% body humidity to a patient's airway. What volume of water is being delivered?

• 24 mg/L
• 37 mg/L
• 44 mg/L
• 47 mg/L - Correct Answer - C. 44 mg/L

A patient is experiencing cardiac arrhythmias and muscle weakness. An arterial blood gas determines that the patient is in metabolic alkalosis. 3 / 4

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pg. 4 Which of the following is the most appropriate lab value to assess at this time?

A. WBC

B. BUN

• Plasma protein
• Potassium - Correct Answer - D. Potassium

The term used to describe a condition is which a patient has difficulty breathing while in the supine position is which of the following?

• Orthopnea
• Hypopnea
• Eupnea
• Bradypnea - Correct Answer - A. Orthopnea

A patient enters the emergency department, and on initial examination the RT observes paradoxical chest movement. Which of the following should the therapist suspect?

• Pulmonary edema
• Pneumonia
• Flail chest
• Pleural effusion - Correct Answer - C. Flail chest

Perfusion in the extremities may best be determined by which of the following methods?

• Obtaining ABG studies and determining PaO2 level
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