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Author Question: The graphic below for a patient receiving mechanical ventilation shows which of the following ... (Read 69 times)

jasdeep_brar

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on: Jul 16, 2018
The graphic below for a patient receiving mechanical ventilation shows which of the following conditions?
 
  a. Leak in the circuit
  b. Active inspiration
  c. Active exhalation
  d. Intrinsic PEEP

Question 2

The flow-time curve shows small oscillations after the peak flow rate has been reached. The res-piratory therapist can alleviate this by making which of the following ventilator adjustments?
 
  a. Increase the set flow rate.
  b. Increase the inspiratory time.
  c. Decrease the inspiratory rise time.
  d. Increase the inspiratory rise time.


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ecabral0

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

ANS: B
Before the delivery of a mandatory breath (constant flow, volume-controlled continuous manda-tory ventilation VC-CMV), patient effort reaches the trigger threshold, and a normal breath is delivered (breath on left). The second breath (right) is patient triggered, but the pressure curve (arrow) is concave because of the patient's active attempt to inhale.

Answer to Question 2

ANS: D
The oscillations on the flow-time curve represent a phenomenon known as ringing, spiking, or overshoot. This is due to a nonsmooth breath delivery. Increasing the inspiratory rise time smooths out the breath delivery by increasing the time it takes for the ventilator to reach the set flow rate.


jasdeep_brar

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

bdobbins

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Reply 3 on: Yesterday
Gracias!

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