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Author Question: Which of the following air compressors are commonly used inside ventilators? I. fluidic II. piston ... (Read 68 times)

kshipps

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on: Jul 16, 2018
Which of the following air compressors are commonly used inside ventilators? I. fluidic II. piston and cylinder III. turbine IV. bellows
 
  A. I, III only
  B. II, IV only
  C. I, III, IV only
  D. II, III, IV only

Question 2

Which of the following classifications matched the volume-controlled, continuous mandatory ventilation (VC-CMV) mode?
 
  A. pressure-controlled, time-triggered, volume-limited, volume-cycled
  B. volume-controlled, pressure-triggered, pressure-limited, flow-cycled
  C. volume-controlled, time-triggered, flow-limited, time-cycled
  D. volume-controlled, pressure-triggered, flow-limited, pressure-cycled


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cdmart10

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Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: DI. Incorrect response: Control circuits can be fluidic, not compressors. Fluidic circuits are analogs of electronic logic circuits. Fluidic circuits use small amounts of gas flow to generate signals that operate timing systems and pressure switches.
II. Correct response: Piston and cylinder is one of three types of small compressors used inside certain ventilators.
III. Correct response: Turbine compressors are another type of compressor used inside some ventilators.
IV. Correct response: Bellows compressors are a third type of compressor housed inside some older-generation ventilators.

Answer to Question 2

ANS: CA. Incorrect response: Volume controlled-continuous mandatory ventilation (VC-CMV) cannot be pressure-controlled. In pressure-controlled, continuous mandatory ventilation (PC-CMV), pressure is the control variable, which implies that both spontaneous and mandatory breaths are available. Pressure control also implies that the mandatory breaths are either pressure-triggered (patient-cycled) or time-triggered.
B. Incorrect response: VC-CMV is volume-controlled and may be either pressure- or time-triggered. Pressure is not a limit variable, and the cycle variable is not flow.
C. Correct response: VC-CMV is (1) volume-controlled; (2) either pressure- or time-triggered, (3) flow-limited, and (4) time-cycled.
D. Incorrect response: VC-CMV is not pressure-cycled.


kshipps

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Reply 2 on: Jul 16, 2018
Excellent

xthemafja

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Reply 3 on: Yesterday
Wow, this really help

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