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Author Question: Following intubation and placement on volume-controlled continuous mandatory ventilation (VC-CMV), a ... (Read 80 times)

kamilo84

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Following intubation and placement on volume-controlled continuous mandatory ventilation (VC-CMV), a patient's average peak inspiratory pressure (PIP) is 26 cm H2O following suction-ing.
 
  The appropriate settings for the low- and high-pressure alarms are which of the following?
  a. Low pressure = 6 cm H2O, high pressure = 46 cm H2O
  b. Low pressure = 15 cm H2O, high pressure = 41 cm H2O
  c. Low pressure = 20 cm H2O, high pressure = 36 cm H2O
  d. Low pressure = 24 cm H2O, high pressure = 31 cm H2O

Question 2

A patient is being ventilated with pressure-controlled intermittent mandatory ventilation (PC-IMV) of 12 breaths/min. The apnea alarm time setting should be which of the following?
 
  a. 4 seconds
  b. 10 seconds
  c. 15 seconds
  d. 20 seconds



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dyrone

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Answer to Question 1

ANS: C
Low-pressure alarms are usually set about 5-10 cm H2O below peak inspiratory pressure (PIP). High-pressure alarms are set about 10 cm H2O above PIP. The only answer that fits both of these criteria is answer C.

Answer to Question 2

ANS: B
Apnea alarms are usually set so the patient will not miss two consecutive machine breaths (apnea time > total cycle time TCT and < TCT  2). The TCT would be 5 sec/cycle (60 sec/12 breaths/min = 5 sec). Considering that the alarm should be activated after two missed mandatory breaths, then that would be 10 sec or 2  TCT.




kamilo84

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Reply 2 on: Jul 16, 2018
:D TYSM


pratush dev

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Reply 3 on: Yesterday
Wow, this really help

 

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