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Author Question: A leak around a patient's ET tube cuff during pressure support ventilation (PSV) will cause which of ... (Read 123 times)

dbose

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on: Jul 16, 2018
A leak around a patient's ET tube cuff during pressure support ventilation (PSV) will cause which of the following to occur?
 
  a. Volume cycle
  b. Time cycle
  c. Pressure cycle
  d. Flow cycle

Question 2

Calculate the average tidal volume for a patient who has a minute ventilation of 10 L/min with a respiratory rate (RR) of 12 breaths/min.
 
  a. 120 mL
  b. 833 mL
  c. 1000 mL
  d. 1200 mL


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wfdfwc23

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

ANS: B
A leak around a cuff could cause a pressure support breath to never flow cycle. For this reason, most ventilators time cycle at a maximum inspiratory time of 1.5-2 seconds.

Answer to Question 2

ANS: B
Minute ventilation equals respiratory rate multiplied by tidal volume (VT). Therefore, tidal vol-ume equals minute ventilation divided by respiratory rate.


dbose

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Reply 2 on: Jul 16, 2018
Thanks for the timely response, appreciate it

aliotak

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Reply 3 on: Yesterday
Wow, this really help

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