NBRC Mock TMC Exam Review questions with correct answers

A patient is receiving O2 from an E cylinder at 4 L/min through a nasal cannula. The cylinder pressure is 1900 psig. How long will the cylinder run until it is empty? A. 47 min B. 1.7 h C. 2.2 h D. 3.6 h Answer E cylinder = 0.28 1900x0.28/4 = 133/60 = 2.21 Answer: C. 2 hours, 21 minutes After the Respiratory Therapist sets up a nonrebreathing mask on a patient at a flow rate of 10 L/min, the reservoir bag collapses before the patient finishes inspiring. The RT should do which of the following? A. Change to a simple mask at a flow rate of 10 L/min B. Remove the one-way valve from the exhalation port. C. Place the patient on continuous positive airway pressure (CPAP) D. Increase the flow rate to 15 L/min Answer D. Increase the flow rate to 15 L/min A patient with carbon monoxide (CO) poisonin