Question Answer
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
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.
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
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
What is the U.S. Food and Drug Administration (FDA) purity standard for O2? A) 21% B) 90% C) 95% D) 99% D) 99%
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
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
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.
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.
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
Which of the following gases is used to treat conditions causing hypoxic respiratory failure? A) N2O B) He C) NO D) cyclopropane C) NO
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
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.
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
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
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
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
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
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
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
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.
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
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
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
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

 

 

Question  
Which type of safety system will prevent you from connecting an air flowmeter to an oxygen station outlet? A. PISS B. DISS C. ASSS (TJI) B. DISS
A patient is to be taken to have an MRI it will take approx. 30 min. The patient needs at least 10 L/min of oxygen. Which of the following E cylinders has the lowest amount of oxygen that you can safely use? A. 2200 psi B. 900 psi C. 1100 psi (T B. 900 psi
You have a tank with the stampings DOT.3AA.2015 on the side. What does the (2015 represent? A. Service pressure B. Maximum fill pressure C. Both A and B (TJI) C. Both A and B
Which of the following is NOT a characteristic of Oxygen? A. Colorless, odorless, tasteless B. Non-flammable C. Supports combustion D. Will combine with all elements and inert gases. (TJI) D. Will combine with all elements and inert gases.
It is ok to use a cylinder of oxygen that does not contain a label as long as it is green in color. A. True B. False (TJI) B. False
What is the cylinder color code for Helium A. Brown B. Gray C. Orange D. Black (TJI) A. Brown
What safety standard is founf on larger tanks, such as G and H cylinders? A. PISS B. DISS C. ASSS D. Quick connect systems (TJI) C. ASSS
A hydrostatic date testing date of “12 10” on a cylinder means the next testing date will be due on which following date? A. 01/16 B. Dec. 2015 C. 11/15 D. Dec. 2020 (TJI) B. Dec. 2015
When using a bourdon gauge and a occlusion occurs distal to the gauge, the bourdon gage will: A. Read the correctly no matter what B. Reads higher than actual L/min C. Reads higher than actual L/min D. Reads lower than actual L/min (TJI) B. Reads higher than actual L/min
When a large tank is over filled and the tanks safety relief is activated which of the following has occurred? A. Frangible disk has exploded B. Gas is vented to the atmosphere C. Temp. inside the tank has risen too high D. A,B and C (TJ D. A, B and C
A patient has a “E” cylinder at home for oxygen. A cylinder of Air was delivered by mistake. What would insure that the patient would not receive the contents of the air cylinder A. PISS for O2 is 2-5 B. PISS for O2 is 1-5 C. Both A and C (TJ A. Piss for O2 is 2-5
A regulator is what two things combined?(IE) reducing valve and flowmeter
2. If you look at a Thorpe tube and the needle valve is positioned upstream or proximal to the actually tube this would indicated what?(IE) it is uncompensated
3. If you put a flowmeter into a gas outlet and the ball in the Thorpe tube jumps this would indicate what? (IE) The Thorpe tube is compensated
4. If you had to transport a patient and knew the only way to continue the patient’s O2 therapy was to lay the cylinder down flat what king of flowmeter would be most appropriate? (IE) A bourdon gauge
5. A H cylinder reading 1500 psi with the flow set at 5 l/min will need to be changed out when? (IE) about 15 hours and 30 mins
What type of safety system is used for E tanks or smaller? (IE) Pin-Index safety system( PISS)
3AL in the specifications on a cylinder would indicate what? (IE) It is made of aluminum
How long will a E cylinder of oxygen with 2200 psi of pressure and a flow rate of 4 L/min last A. 90 min. B. 153 min. C. 2 hrs. D. 1 1/2 hrs. (TJI) B. 153 min.


Question Answer
Name three clinical objectives of oxygen therapy: 1) To correct acute hypoxemia, 2) To decrease chronic hypoxemia symptoms, and 3) To decrease cardiopulmonary workload. Egan’s, page 868
How does oxygen therapy go about correcting hypoxemia? By raising the alveolar and blood levels of oxygen. Egan’s, page 868
Name four patient manifestations of hypoxemia: Tachypnea, tachycardia, cyanosis, and an overall distressed appearance. Egan’s, page 868
Which side of the heart is affected by chronic pulmonary hypertension and pulmonary vasoconstriction? The right side of the heart. Egan’s, page 868
What is another name for failure of the right side of the heart? Cor pulmonale. Egan’s, page 868
Which two primary areas of the body are affected by oxygen toxicity? The lungs and the central nervous system. Egan’s, page 870
What two factors determine the harmful effects of oxygen? Exposure time and the partial pressure of oxygen. Egan’s, page 870
What type of cells are destroyed by oxygen toxicity? Type I alveolar cells. Egan’s, page 870
What type of cells proliferate after type I alveolar cells are destroyed by oxygen toxicity? Type II alveolar cells. Egan’s, page 870
Oxygen toxicity is caused by the overproduction of what? Oxygen free-radicals. Egan’s, page 871
As a general rule to avoid oxygen toxicity, patient exposure to 100% oxygen should be limited to how many hours? Whenever possible, limit this exposure to less than twenty-four hours. Egan’s, page 871
Name five hazards of supplemental oxygen therapy: Oxygen toxicity, depression of ventilation, retinopathy of prematurity, absorption atelectasis, and fire hazard. Egan’s, pages 870 through 872
What is the primary reason that some COPD patients hypoventilate when given oxygen? The most likely cause is suppression of hypoxic drive. Egan’s, page 871
Supplemental oxygen can cause what eye condition in some premature and low birth weight infants? Retinopathy of prematurity. Egan’s, page 871
A significant risk of absorption atelectasis exists at what oxygen concentration? Oxygen concentrations above 50%. Egan’s, page 872
What are the three basic design categories (systems) of oxygen delivery devices? Low-flow systems, high-flow systems, and reservoir systems. Egan’s, page 872
Name three low-flow oxygen delivery devices: Tha nasal cannula, the nasal catheter, and the transtracheal catheter. Egan’s, pages 873 and 876
What is the oxygen concentration delivery range of typical air entrainment masks (expressed an a percentage)? Air entrainment masks can generally deliver oxygen concentrations from 24% to 50%. Egan’s, page 884
For each liter per minute, what is the percentage increase in oxygen concentration delivered to a patient who has a normal depth and rate of breathing? There is an appromimate 4% increase in oxygen concentration for each liter per minute of flow. Egan’s, page 877
What is the best method for administration of controlled oxygen therapy to infants? The best device is an oxygen hood, or Oxyhood.