Med Gas Week 1 Quiz Reveiw
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| Which of the following medical gases support combustion? I. O2 II. N2O III. compressed air IV. CO2 A) I and IV B) II and III C) I, II, and III D) I, III, and IV | C) I, II, and III
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| Which of the following statements regarding O2 is false? A) It is only slightly soluble in water. B) It is odorless and transparent. C) It is flammable. D) It is heavier than air. | C) It is flammable.
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| By what means is oxygen for medical use in a hospital most commonly produced? A) chemical decomposition B) electrolysis C) fractional distillation D) physical separation |
C) fractional distillation
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| What is the most common and least expensive method for commercial production of O2? A) electrolysis of water B) fractional distillation of air C) physical separation by molecular sieves D) chemical decomposition of sodium chlorate | B) fractional distillation of air
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| What is the U.S. Food and Drug Administration (FDA) purity standard for O2? A) 21% B) 90% C) 95% D) 99% | D) 99%
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| Which of the following methods of producing O2 is commonly used in the home care setting? A) chemical decomposition B) electrolysis C) fractional distillation D) physical separation | D) physical separation
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| Air for medical use in a hospital should be which of the following? I. particle-free II. oil-free III. dry A) I and II B) I and III C) II and III D) I, II, and III | D) I, II, and III
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| Which of the following statements about CO2 is FALSE? A) It does not support animal life. B) It is a flammable gas. C) It is odorless and colorless. D) It is heavier than air. | B) It is a flammable gas.
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| Which of the following statements about He is false? A) It is an inert gas. B) It is odorless. C) It is nonflammable. D) It is heavier than air. | D) It is heavier than air.
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| What key property of He makes it useful as a therapeutic gas? A) low solubility B) chemical inertness C) low cost D) low density | D) low density
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| Which of the following gases is used to treat conditions causing hypoxic respiratory failure? A) N2O B) He C) NO D) cyclopropane |
C) NO
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| Department of Transportation (DOT) regulations require compressed gas cylinders to be hydrostatically tested for leaks and expansion every how often? A) 1 to 2 years B) 3 to 5 years C) 6 to 8 years D) 5 or 10 years | D) 5 or 10 years
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| During inspection of the shoulder of a compressed gas cylinder, you note a plus sign (+) next to the test date. This indicates what about the cylinder? | It can be filled to 10% above its service pressure.
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| According to the U.S. Department of Commerce, a gas cylinder that is color coded blue should contain which of the following? A) Air B) He C) N2O D) O2 | C) N2O
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| According to the National Institute of Standards and Technology of the U.S. Department of Commerce, a gas cylinder that is color-coded brown and green should contain which of the following? A) O2–N2 mixture B) O2–CO2 mixture C) CO2 D) O2–He mixture | D) O2–He mixture
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| In clinical practice, how is a positive identification made of the contents of a medical gas cylinder? A) noting the color of the cylinder B) inspecting the cylinder threads C) reading the cylinder label D) collecting and analyzing a gas sample | C) reading the cylinder label
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| Which of the following mechanisms do all compressed gas cylinders use to avoid excessively high buildup of cylinder pressure? | pressure-relief mechanism on the valve stem
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| The measured pressure in a liquid-filled cylinder is equivalent to which of the following? | the pressure of the surface vapor at any given temperature
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| The measured pressure in a gas-filled cylinder is equivalent to which of the following? | the force required to compress its volume within the cylinder
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| When full, a gas cylinder registers a pressure of 2200 psig. After a few hours of use, the pressure gauge reads 550 psig. The cylinder is now how full? A) one half B) one third C) one fourth D) two thirds | C) one fourth
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| What is the usual method of monitoring the remaining contents in a gas-filled cylinder? A) Weigh the cylinder. B) Read the pressure gauge. C) Compute the gas density. D) Read the cylinder label. | B) Read the pressure gauge.
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| What cylinder factor is used to compute the duration of flow for a 244 cu/ft (H/K) O2 or air cylinder? A) 0.16 B) 0.28 C) 3.14 D) 2.41 | C) 3.14
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| What cylinder factor is used to compute the duration of flow for a 22 cu/ft O2 or air E cylinder? A) 0.28 B) 1.34 C) 2.41 D) 3.14 | A) 0.28
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| The gauge on an H cylinder of O2 reads 2000 psig. About how long would the contents of this cylinder last, until completely empty, at a flow of 6 L/min? A) 1 hour 30 minutes B) 17 hours 30 minutes C) 18 hours 10 minutes D) 21 hours 50 minutes | B) 17 hours 30 minutes
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| The gauge on an E cylinder of O2 reads 800 psig. About how long would the contents of this cylinder last, until completely empty, at a flow of 3 L/min? A) 1 hour 15 minutes B) 1 hour 45 minutes C) 2 hours 10 minutes D) 2 hours 40 minutes | A) 1 hour 15 minutes
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