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Author Question: What is the maximum available tidal volume for a time-triggered, pressure-limited, time-cycled ... (Read 30 times)

notis

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on: Jul 16, 2018
What is the maximum available tidal volume for a time-triggered, pressure-limited, time-cycled infant ventilator with the flow rate set at 8 L/min and the inspiratory time at 0.4 second?
 
  a. 19 mL c. 53 mL
  b. 22 mL d. 88 mL

Question 2

The stable jet flow from the ARABELLA System causes which of the following?
 
  a. A decrease in the patient's work of breathing
  b. A higher continuous positive airway pres-sure level for less flow through the system
  c. More patient flow to switch from expira-tion to inspiration
  d. More patient expiratory flow to cause a switch to expiration


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frejo

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

ANS: C
Tidal volume (liters) = Inspiratory time (seconds)  Flow (L/min)  60 = 0.4  8  60 = 0.053 L, or 53 mL.

Answer to Question 2

ANS: D
A more stable jet flow seems to require a more substantial patient expiratory flow to cause the device to switch into expiration. The additional flow that is required for the ARABELLA sug-gests that a patient must work harder to breathe when this system is used.


notis

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Reply 2 on: Jul 16, 2018
Great answer, keep it coming :)

bigcheese9

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Reply 3 on: Yesterday
:D TYSM

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