Test Bank For Equipment Theory for Respiratory Care, 5th Edition

Name: Class: Date: Chapter 02: Medical Gas Therapy Equipment 1. Oxygen therapy is indicated in the acute care setting for adults with: I. PaO2 < 60 mmHg II. SpO2 < 90% III. suspected hypoxemia IV. acute myocardia infarction a. I b. I and II c. I, II, and III d. I, II, III, and IV ANSWER: d 2. Oxygen therapy is indicated in the sub-acute or home setting for adults with: I. PaO2 < 55 mmHg II. SpO2 < 88% III. hypoxemia in association with cor pulmonale IV. pulmonary hypertension a. I b. I and II c. I, II, and III d. I, II, III, and IV ANSWER: d 3. A high-flow oxygen delivery device: a. is operated at flows greater than 10 L/min b. provides part of a patient’s inspiratory needs c. operates from 100% oxygen only d. provides all of a patient’s inspiratory needs ANSWER: d 4. A low-flow oxygen delivery device: a. is operated at flows greater than 10 L/min b. provides part of a patient’s inspiratory needs c. operates from 100% oxygen only d. provides all of a patient’s inspiratory needs ANSWER: b 5. Most high-flow oxygen systems work using: a. the venturi principle b. Bernoulli’s principle c. viscous shearing and vorticity d. none of the above ANSWER: c 6. Low-flow oxygen delivery devices: I. vary in the concentration that they deliver II. deliver concentrations that are influenced by the patient’s respiratory rate III. deliver concentrations that are influenced by the patient’s respiratory pattern IV. deliver concentrations that are influenced by the patient’s tidal volume a. I b. I and II c. I, II, and III d. I, II, III, and IV ANSWER: d Copyright Cengage Learning. Powered by Cognero. Page 1 Name: Class: Date: Chapter 02: Medical Gas Therapy Equipment 7. HAFOE (high air flow with oxygen enrichment) masks operate using: a. the venturi principle b. Bernoulli’s principle c. viscous shearing and vorticity d. none of the above ANSWER: c 8. At 40%, a HAFOE (high air flow with oxygen enrichment) mask is operating with an air-to-oxygen entrainment ratio of: a. 1:1 b. 2:1 c. 3:1 d. 4:1 ANSWER: c 9. A HAFOE (high air flow with oxygen enrichment) mask is set at 40%, and the oxygen flowmeter is running at 6 L/min. What is the total flow to the patient? a. 6 L/min b. 18 L/min c. 24 L/min d. 30 L/min ANSWER: c 10. A HAFOE (high air flow with oxygen enrichment) mask is operating at 50%, and the oxygen flowmeter is set at 15 L/min. What is the total flow to the patient? a. 16 L/min b. 31 L/min c. 41 L/min d. 51 L/min ANSWER: c 11. A HAFOE (high air flow with oxygen enrichment) mask is set at 50%. What is the air-to-oxygen entrainment ratio? a. 1:1 b. 1.7:1 c. 3:1 d. 4:1 ANSWER: b 12. A high-flow oxygen delivery device is set at 35%, and the oxygen flowmeter is set at 5 L/min. What is the total flow to the patient? a. 15 L/min b. 20 L/min c. 30 L/min d. 35 L/min ANSWER: c 13. A HAFOE (high air flow with oxygen enrichment) is set at 35%. What is the air-to-oxygen entrainment ratio? a. 2:1 b. 3:1 c. 4:1 d. 5:1 ANSWER: d 14. A HAFOE (high air flow with oxygen enrichment) mask is set at 24%, and the oxygen flowmeter is running at 3 L/min. What is the total flow to the patient? a. 74 L/min b. 84 L/min c. 94 L/min d. 104 L/min ANSWER: d Copyright Cengage Learning. Powered by Cognero. Page 2 Name: Class: Date: Chapter 02: Medical Gas Therapy Equipment 15. A HAFOE (high air flow with oxygen enrichment) is set at 24%. What is the air-to-oxygen entrainment ratio? a. 5:1 b. 8:1 c. 10:1 d. 25:1 ANSWER: d 16. Oxygen delivery through a HAFOE (high air flow with oxygen enrichment) mask: a. is affected by the patient’s tidal volume b. is affected by the patient’s respiratory rate c. is affected by the patient’s breathing pattern d. none of the above ANSWER: d 17. Which of the following are high-flow delivery devices? I. disposable non-rebreathing mask II. high air flow with oxygen enrichment (HAFOE) mask III. anesthesia bag-mask systems IV. partial rebreathing mask a. I and II b. I and III c. II and III d. III and IV ANSWER: c 18. A low-flow oxygen delivery device: I. meets all of the patient’s inspiratory needs II. meets part of the patient’s inspiratory needs III. entrains room air IV. delivers 100% oxygen a. I and III b. I and IV c. II and III d. II and IV ANSWER: c 19. At 3 L/min, a nasal cannula delivers approximately what FIO2? a. 24% b. 28% c. 32% d. 36% ANSWER: b 20. A nasal cannula running at 2 L/min delivers approximately what FIO2? a. 24% b. 28% c. 32% d. 36% ANSWER: a 21. A nasal cannula running at 6 L/min delivers approximately what FIO2? a. 28% b. 32% c. 36% d. 40% ANSWER: d Copyright Cengage Learning. Powered by Cognero. Page 3 Name: Class: Date: Chapter 02: Medical Gas Therapy Equipment 22. A pendant cannula is advantageous over a simple nasal cannula because: a. it delivers a higher FIO2 b. it has a more consistent oxygen delivery c. it is not affected by the patient’s respiratory rate or tidal volume d. it can conserve oxygen ANSWER: d 23. A transtracheal catheter has advantages compared with a nasal cannula because: a. it delivers a higher FIO2 b. it has a more consistent oxygen delivery c. it is not affected by the patient’s respiratory rate or tidal volume d. it can conserve oxygen ANSWER: d 24. Hazards of a transtracheal catheter include: I. infection II. subcutaneous emphysema III. hemoptysis IV. mucosal drying a. I b. I and II c. I, II, and III d. I, II, III, and IV ANSWER: c 25. A simple oxygen mask can deliver approximately what range of FIO2? a. 25-45% b. 35-55% c. up to 60% d. up to 70% ANSWER: b 26. A partial rebreathing oxygen mask can deliver approximately what range of FIO2? a. 25-45% b. 35-55% c. up to 60% d. up to 70% ANSWER: c 27. A disposable non-rebreathing oxygen mask can deliver approximately what range of FIO2? a. 25-45% b. 35-55% c. up to 60% d. up to 80% ANSWER: d 28. Which of the following are low-flow oxygen delivery devices? I. non-rebreathing mask II. partial rebreathing mask III. simple oxygen mask IV. high air flow with oxygen enrichment (HAFOE) mask a. I b. I and II Copyright Cengage Learning. Powered by Cognero. Page 4 Name: Class: Date: Chapter 02: Medical Gas Therapy Equipment c. I, II, and III ANSWER: c d. I, II, III, and IV 29. Which of the following are advantages of high flow heated humidified oxygen therapy via a nasal cannula? I. II. III. IV. Reduced oxygen dilution Decreased deadspace Generation of continuous positive airway pressure Increased patient comfort a. I c. I, II, and III ANSWER: d b. I and II d. I, II, III, and IV 30. What is flow rate range for the Teleflex Medical Comfort Flo heated humidified nasal cannula? a. 1 – 30 L/min b. 1 – 40 L/min c. 5 – 50 L/min d. 5 – 60 L/min ANSWER: b 31. What liter flow of heated humidified oxygen can the Vapotherm Precision FlowTM deliver through its cannula? a. 6 L/min b. 10 L/min c. 20 L/min d. 40 L/min ANSWER: d 32. What percentage relative humidity at 41 degrees Celsius can the Vapotherm Precision FlowTM deliver? a. 65% b. 75% c. 85% d. 95% ANSWER: d 33. Incubators (Isolettes) are frequently used for: a. oxygen therapy b. humidity therapy c. thermal regulation d. none of the above ANSWER: c 34. A head box is classified as: a. a high-flow delivery device c. an enclosure ANSWER: c b. a low-flow delivery device d. none of the above 35. Oxygen is typically delivered to a head box using: a. a high air flow with oxygen entrainment (HAFOE) device b. two flowmeters (one for air and one for oxygen) c. a blender d. none of the above ANSWER: c Copyright Cengage Learning. Powered by Cognero. Page 5 Name: Class: Date: Chapter 02: Medical Gas Therapy Equipment 36. When using mist tents or croupettes, you must be careful because: a. oxygen concentrations are high b. flow into the tent is high, causing heat retention c. oxygen concentrations can layer d. the volume of the enclosure is very small ANSWER: c 37. Hyperbaric oxygen therapy is the application of oxygen at: a. ambient pressure b. sub-ambient pressure c. greater than ambient pressure d. none of the above ANSWER: c 38. Hyperbaric oxygen therapy: a. increases the PaO2 b. increases oxygen saturation (SaO2) c. decreases elimination of carbon monoxide d. increases the size of dissolved gas bubbles ANSWER: a 39. Hyperbaric oxygen therapy is approved for the treatment of: I. gas gangrene II. radiation necrosis III. carbon monoxide poisoning IV. necrotizing soft tissue infections a. I b. I and II c. I, II, and III d. I, II, III, and IV ANSWER: d 40. The only absolute contraindication for hyperbaric therapy is: a. subcutaneous emphysema b. upper respiratory infections c. bullous emphysema d. untreated pneumothorax ANSWER: d 41. When setting the flowmeter on a partial rebreathing mask, oxygen flow a. should be at least 10 L/min b. should be set at flush (maximum setting) c. should be adjusted to maintain the desired PaCO2 d. should be adjusted to keep the bag full ANSWER: d 42. Helium/oxygen (heliox) mixtures are advantageous in treating obstructive lung disease (refractory asthma) because: a. the gas viscosity is lower b. higher oxygen concentrations are possible c. helium doesn’t dissolve into the plasma Copyright Cengage Learning. Powered by Cognero. Page 6 Name: Class: Date: Chapter 02: Medical Gas Therapy Equipment d. the density of the gas is lower ANSWER: d 43. When adjusting the flow during helium/oxygen (heliox) therapy, gas flow: a. should be at least 10 L/min b. should be set at flush (maximum setting) c. should be adjusted to maintain the desired PaCO2 d. should be adjusted to keep the bag full ANSWER: d 44. A helium/oxygen (heliox) mixture of 80%/20% has a density compared with oxygen of: a. 1.8 times greater b. 1.6 times greater c. 1.8 times lower d. 1.6 times lower ANSWER: c 45. A helium/oxygen (heliox) mixture of 70%/30 % has a density compared with oxygen of: a. 1.8 times greater b. 1.6 times greater c. 1.8 times lower d. 1.6 times lower ANSWER: d 46. The physician wants a liter flow of 12 L/min of a 20%/80% helium/oxygen mixture. The only flowmeter you have is an oxygen flowmeter. What should you adjust the flowmeter to read? a. 22 L/min b. 19 L/min c. 7 L/min d. 8 L/min ANSWER: c 47. The physician wants a liter flow of 12 L/min of a 30%/70% helium/oxygen mixture. The only flowmeter you have is an oxygen flowmeter. What should you adjust the flowmeter to read? a. 22 L/min b. 19 L/min c. 7 L/min d. 8 L/min ANSWER: d 48. Helium/oxygen (heliox) therapy should be delivered using: a. a nasal cannula b. a simple oxygen mask c. a partial rebreathing mask d. a tight non-rebreathing mask ANSWER: d 49. Which of the following is a common mixture for carbon dioxide/oxygen therapy? a. 5%/95% b. 20%/80% c. 30%/70% d. none of the above ANSWER: a 50. Which of the following is a common mixture for helium/oxygen therapy? a. 7%/93% b. 20%/80% Copyright Cengage Learning. Powered by Cognero. Page 7 Name: Class: Date: Chapter 02: Medical Gas Therapy Equipment c. 5%/95% ANSWER: b d. none of the above 51. Which of the following are hazards of carbon dioxide/oxygen therapy? I. increased blood pressure II. increased heart rate III. increased respiratory rate IV. increased depth of breathing a. I b. I and II c. I, II, and III d. I, II, III, and IV ANSWER: d 52. Carbon dioxide/oxygen therapy should be limited to: a. 1 to 5 minutes b. 5 to 15 minutes c. 15 to 20 minutes d. 20 to 60 minutes ANSWER: b 53. Nitric oxide (NO) therapy is approved for treatment of: a. pulmonary embolus b. pulmonary edema c. pulmonary hypertension d. pulmonary infarction ANSWER: c 54. The therapeutic range for inhaled nitric oxide is: a. 10 to 20% b. 2 to 80% c. 2 to 80 parts per million d. less than 1 part per million ANSWER: c 55. Inhaled nitric oxide is delivered via a. nasal cannula b. transtracheal catheter c. non-rebreathing mask d. the I-NO vent ANSWER: d 56. Nitric oxygen may combine with water to form I. nitrous oxide II. nitrogen dioxide III. nitric acid IV. nitrate a. I and II b. II and III c. I and III d. II and IV ANSWER: b 57. How is oxygen percentage regulated in a heated humidified high flow nasal cannula? a. It is factor preset. b. It is adjusted using air dilution (HAFOE). c. It is adjusted by setting two flowmeters; one for air and the other for oxygen. d. There are proportional solenoid valves that adjust the oxygen percentage. Copyright Cengage Learning. Powered by Cognero. Page 8 Name: Class: Date: Chapter 02: Medical Gas Therapy Equipment ANSWER: d Copyright Cengage Learning. Powered by Cognero. Page 9