An E size cylinder is turned on, and the flowmeter is off. Which of the following is (are) the most likely cause(s) of a hissing sound?
1. A cracked flowmeter
2. Inadequate pressure in the cylinder
3. An obstruction at the regulator outlet
4. A leak in the connection between the yoke and the cylinder opening
a. 2 c. 1 and 3
b. 1 and 2 d. 1 and 4
Q. 2 The best position for the cylinder valve when it is being used is:
a. completely open.
b. two turns toward the left.
c. one turn, open toward the right.
d. one half-turn back from completely open.
Q. 3 Which of the following procedures should be followed in setting up a compressed gas cylinder at a patient's bedside?
1. Inspect the cylinder and valve for dirt, debris, and oil.
2. Make sure the cylinder is properly secured.
3. Tighten the regulator with a pipe wrench.
4. Open the cylinder valve completely.
a. 3 and 4 c. 1, 2, 3, and 4
b. 1 and 2 d. 1, 2, and 4
Q. 4 After connecting an oxygen regulator to an H cylinder and turning the direct-acting valve on, the respiratory therapist attempts to turn on the flow of oxygen. The desired gas flow is not achieved.
Which of the following is (are) the most likely problem(s)?
1. The therapist is using the wrong regulator.
2. The pressure in the cylinder is inadequate.
3. The regulator outlet is obstructed.
4. There is a leak in the connection between the cylinder outlet and the regulator.
a. 1 c. 2 and 3
b. 2 and 4 d. 1, 2, and 4
Q. 5 A full H size cylinder is used to provide oxygen to an air-entrainment mask at 6 L/min. If the cylinder is replaced at 500 psig, how long will it last?
a. 5 hours c. 10 hours 50 minutes
b. 10 hours 20 minutes d. 15 hours 23 minutes
Q. 6 What are the pin positions for an E size compressed air cylinder?
a. 1 and 5 c. 2 and 5
b. 1 and 6 d. 3 and 5
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