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Author Question: A 39-year-old, 5'4, 138 lb female patient requires intubation and mechanical ventilation. Her body ... (Read 42 times)

danielfitts88

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on: Jul 16, 2018
A 39-year-old, 5'4, 138 lb female patient requires intubation and mechanical ventilation. Her body temperature is 39 C. She has no history of lung disease. The appropriate initial minute ven-tilation for this patient is which of the following?
 
  a. 5.7 L/min
  b. 6.8 L/min
  c. 7.6 L/min
  d. 13.8 L/min

Question 2

A patient having an acute, severe asthma exacerbation is intubated and set up on vol-ume-controlled continuous mandatory ventilation (VC-CMV).
 
  To ensure volume delivery at the lowest peak pressure while providing for better air distribution, which flow waveform should be used?
  a. Sine
  b. Constant
  c. Ascending ramp
  d. Descending ramp


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ms_sulzle

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

ANS: B
First calculate ideal body weight (IBW) for a female, using the formula 105 + 5(ht  60). This patient's IBW is 57 kg. Minute ventilation is about 100 mL/kg IBW, which would be 57,000 mL/min or 5.7 L/min. VE would have to be increased by 10 for each degree above 37 C: a to-tal increase of 20 of 5.7 = 1.14; therefore, the new minute ventilation (VE) would be 5.7 + 1.14 = 6.8 L/min.

Answer to Question 2

ANS: D
In patients with high airway resistance (Raw), the descending pattern is more likely to deliver a set tidal volume (VT) at a lower pressure and provide for better distribution of air through the lung than a constant or an accelerating flow.


danielfitts88

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Reply 2 on: Jul 16, 2018
YES! Correct, THANKS for helping me on my review

elyse44

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Reply 3 on: Yesterday
:D TYSM

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