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Author Question: Calculate the transrespiratory pressure given the following information: volume 0.6 L; compliance 1 ... (Read 48 times)

P68T

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on: Jul 16, 2018
Calculate the transrespiratory pressure given the following information: volume 0.6 L; compliance 1 L/cm H2O; airway resistance 3 cm H2O/L/sec; flow 1 L/sec.
 
  a. 0.9 cm H2O
  b. 1.8 cm H2O
  c. 3.6 cm H2O
  d. 4.6 cm H2O

Question 2

A patient who has a decrease in lung compliance due to acute respiratory distress syndrome dur-ing volume-limited ventilation will cause which of the following?
 
  a. Increased volume delivery
  b. Increased peak pressure
  c. Decreased flow delivery
  d. Decreased peak pressure


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Juro

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

ANS: C
Transrespiratory pressure (PTR) = Pvent + Pmus = V/C + ( Raw  ).

Answer to Question 2

ANS: B
When a patient is being ventilated in a volume-limited mode the ventilator will maintain the volume, which will remain unchanged, along with the flow, but the pressure will vary with changes in lung characteristics. A decrease in lung compliance will cause the amount of pressure needed to overcome elastance to increase. This will increase the peak pressure needed to deliver the set volume. Flow and volume will remain constant.


P68T

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Reply 2 on: Jul 16, 2018
Excellent

carlsona147

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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