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NBRC CRT · Certified Respiratory Therapist

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589 NBRC CRT practice questions, each with a full explanation. Start free today, upgrade when you are ready.

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589
questions: 3
subject areas: 4.8
avg of 330 app ratings

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Review our NBRC CRT preparation plans side by side and choose the plan that best fits your study needs and timeline.One payment. Nothing auto-renews. Full access to all 589 questions.

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What’s included:
- 30 days of full access
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- Incorrect Question Review: included
- Bookmark & Notes: included
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- Unlimited Practice Tests: included
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What’s included:
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- Incorrect Question Review: included
- Bookmark & Notes: included
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- Personal Medical AI Tutor: included
Pass Guarantee: 100% money back, no questions asked
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$59.99 one payment
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What’s included:
- 180 days of full access
- 589 Practice Questions: included
- Detailed Answer Rationales: included
- Custom Quiz Builder: included
- Topic-Level Performance Analytics: included
- Incorrect Question Review: included
- Bookmark & Notes: included
- Mobile + Desktop Access: included
- Unlimited Practice Tests: included
- Personal Medical AI Tutor: included
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1 month30 days of full access$24.99$0.83 a day3 monthsMost popularSave 47%vs $74.97 paying monthly · 90 days$39.99$0.44 a day6 monthsSave 60%vs $149.94 paying monthly · 180 days$59.99$0.33 a day

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Every subject area, covered

1. Patient Data204 questions
2. Troubleshooting and Quality Control of Devices, and Infection Control95 questions
3. Initiation and Modification of Interventions290 questions

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Results

Date: TodayTime Taken: 00:04:12

Category Quiz

2. Troubleshooting and Quality Control of Devices, and Infection Control

Answers ResultALL 3CORRECT 1INCORRECT 2SAVED 0

A patient on a ventilator is receiving oxygen with an FiO2 of 0.90 and has the following arterial blood-gas results: pH 7.38 PaCO2 38 mm Hg PaO2 72 mm Hg What is the patient’s alveolar–arterial oxygen gradient, P(A–a)O2? Assume barometric pressure (Pb) is 745 mm Hg, water vapor pressure is 47 mm Hg, and respiratory quotient R = 0.8. Round to the nearest whole number.

Incorrect

A.509 mm Hg
B.518 mm Hg
C.551 mm Hg
D.110 mm Hg

A 55-year-old man with severe COPD is admitted with an acute exacerbation. He is alert and cooperative but has increased work of breathing with accessory muscle use. He is able to protect his airway and clear secretions. After initial bronchodilator therapy and controlled oxygen (target SpO2 88%–92%), an arterial blood gas on room air earlier showed: pH 7.30, PaCO2 55 mmHg, PaO2 60 mmHg, HCO3- 24 mEq/L. Which intervention is the most appropriate next step?

Correct

A.Start bronchodilator therapy only
B.Initiate non-invasive positive pressure ventilation (NPPV)
C.Administer 100% oxygen via non-rebreather mask
D.Schedule the patient for immediate intubation

Category Quiz1. Patient Data1 of 3 correct04:12

Answers ResultALL 3CORRECT 1INCORRECT 2SAVED 0

Incorrect

A.509 mm Hg
B.518 mm Hg
C.551 mm Hg
D.110 mm Hg

Hide Explanation

Use the alveolar gas equation: PAO2 = FiO2(Pb − PH2O) − (PaCO2/R). First compute the inspired oxygen term: (745 − 47) = 698 mm Hg, so FiO2(Pb − PH2O) = 0.90 × 698 = 628.2 mm Hg. Next compute the CO2 correction: PaCO2/R = 38/0.8 = 47.5 mm Hg. Thus, PAO2 = 628.2 − 47.5 = 580.7 mm Hg. The A–a gradient is P(A–a)O2 = PAO2 − PaO2 = 580.7 − 72 = 508.7 mm Hg, which rounds to 509 mm Hg. The choice with a value near 518 mm Hg can result from using an incorrect respiratory quotient (such as R = 1). The larger value near 551 mm Hg can result from failing to subtract water vapor pressure. The low value near 110 mm Hg reflects an incorrect application of the alveolar gas equation or mixing up PaO2 and PAO2.

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NBRC CRT1. Patient Data

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1. Patient Data69 of 204 Questions

2. Troubleshooting and Quality Control of Devices, and Infection Control26 of 95 Questions

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