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Author Question: The control variables most often used to ventilate infants are which of the following? a. Volume ... (Read 33 times)

bcretired

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on: Jul 16, 2018
The control variables most often used to ventilate infants are which of the following?
 
  a. Volume limited, time cycled ventilation
  b. Pressure limited, time cycled ventilation
  c. Pressure limited, pressure cycled ventila-tion
  d. Volume limited, volume cycled ventilation

Question 2

The respiratory therapist enters the room of a patient being mechanically ventilated with volume ventilation. The high pressure alarm is sounding and the measured exhaled tidal volume is signif-icantly lower than what is set.
 
  The variable that is ending inspiration is which of the following?
  a. Time
  b. Flow
  c. Pressure
  d. Volume


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Jossy

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

ANS: B
Infant ventilators most often limit the pressure delivered and end inspiration using inspiratory time. Volume limited, volume cycled ventilation is volume-controlled ventilation. Pressure lim-ited, pressure cycled ventilation is the type of breath used during intermittent positive pressure breathing (IPPB).

Answer to Question 2

ANS: C
Volume ventilation is cycled by volume. However, to protect the patient's lungs from high pres-sures a maximum high pressure limit is set (usually 10 cm H2O above the average peak inspiratory pressure). Inspiration ends prematurely when the high pressure limit is reached, independent of the set volume. This is the reason why the exhaled tidal volume reading is significantly lower than the set volume. Therefore, the variable ending inspiration in this instance is pressure.


bcretired

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Reply 2 on: Jul 16, 2018
Wow, this really help

Hdosisshsbshs

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Reply 3 on: Yesterday
Excellent

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