TMC/ CRT / WRRT Exam (Latest 2024/ 2025 Update) Questions and Verified Answers| 100% Correct| Grade A

NBRC,TMC,CRT,WRRT Exam (Latest 2024/ 2025 Update) Questions and Verified Answers| 100% Correct| Grade A Q: Give four examples of high-flow O₂ delivery devices. Answer: 1. Venturi Mask 2. Aerosol Mask 3. T-piece (Brigg's Adaptor) 4. Face Tent 5. Trach Collar Q: Calculate total O₂ content, given the following ABG test results: pH 7.36 PCO₂ 40 PO₂ 82 SaO₂ 96% Hb 13 g/dL Answer: 17 vol % (1.34 x 13 x 0.96) + (82 x .003) = 16.95 Q: What is the total flow delivered by an aerosol mask on 60% O₂, running 12 L/min ? Answer: 24 L/min 60% (1:1 air/O₂ ratio) 1+1 = 2, 2 x 12 L/min = 24 L/min Q: List the three ventilatory criteria that should be met by patients receiving O₂ from a low-flow device. Answer: 1. Consistent ventilatory pattern 2. VT 300 - 700 mL 3. Respiratory Rate 25 Q: An 80:20 mixture of helium/O₂ running through an O₂ flowmeter at 6 L/min is delivering how much flow to the patient? Answer: 10.8 L/min 1.8 x 6 = 10.8 L/min Q: Calculate how long an "E" cylinder with 1900 psig will run at 5 L/min. Answer: 1 h, 46 min (1900 x .28) / 5 = 106 min Q: Give examples of three low-flow O₂ devices. Answer: 1. nasal cannula 2. simple mask 3. partial rebreather Q: List five conditions that affect the accuracy of pulse oximeters. Answer: 1. poor perfusion 2. severe anemia 3. hypotension 4. elevated HbCO level 5. direct light 6. nail polish 7. dark skin Q: How does water in the aerosol tubing of a mask affect the delivered FIO₂? Answer: Increases FiO₂ Q: The physician orders O₂ therapy for a patient with a VT of 400 mL and an inspiratory time of 0.5 seconds. What flow must the mask deliver to meet this patient's inspiratory flow demands? Answer: 48 L/min 0.4L / 0.5s = 0.8 L/sec * 60 = 46 L/min Q: Name the four critical life functions. Answer: 1. Ventilation (moving air in/out of lungs) 2. Oxygenation (getting oxygen into blood) 3. Circulation (moving blood through body) 4. Perfusion (getting blood/oxygen into the tissue) Q: The activities of daily living (ADL) scale is based on six criteria. Fill in the missing. 1. bathing 2. eating 3. dressing 4. 5. 6. Answer: 1. bathing 2. eating 3. dressing 4. toilet use 5. transferring 6. urine and bowel continence If a patient is able to do each, a score of '1' is assigned. A total score of 2 or less means patient is impaired. Q: Orthopnea means what? Answer: difficulty breathing except in the upright position. This may be due to CHF or other heart problem. Q: There are five grades of dyspnea. Which is worse?