Airway Humidification Devices in Anesthesia
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Questions and Answers

What temperature is used in a hot water bath to reduce bacterial contamination?

  • 30C
  • 75C
  • 60C (correct)
  • 45C
  • Which circuit composition involves heating neither circuit limb?

  • Type D
  • Type C
  • Type B
  • Type A (correct)
  • What is the purpose of having a water trap in both inspiratory and expiratory limbs in Type A circuit composition?

  • To improve gas flow
  • To keep the circuit dry
  • To increase condensation
  • To reduce condensation (correct)
  • In Type B circuit composition, which limb is heated?

    <p>Inspiratory limb</p> Signup and view all the answers

    What temperature is the gas at the reservoir outlet in a Type B circuit composition?

    <p>37C</p> Signup and view all the answers

    Why is an expiratory water trap still required in Type B circuit composition?

    <p>To prevent over-humidification</p> Signup and view all the answers

    What is the main function of a passive humidifier in anesthesia?

    <p>To add heat and moisture to cool dry inspired gases</p> Signup and view all the answers

    What is an advantage of passive humidifiers over active humidifiers?

    <p>Produce 60–80% humidification of inspired gases</p> Signup and view all the answers

    What happens when passive humidifiers like HMEs become occluded?

    <p>They can become occluded with secretions, blood or water</p> Signup and view all the answers

    Which type of humidifier does not require an external energy source to function?

    <p>Passive humidifier</p> Signup and view all the answers

    What is the primary disadvantage of using a passive humidifier?

    <p>Increase the resistance of the breathing system</p> Signup and view all the answers

    How do passive humidifiers like HMEs work in recovering heat and moisture?

    <p>By returning heat and moisture during expiration to cool, dry gas on inspiration</p> Signup and view all the answers

    What is the purpose of an Ambu bag?

    <p>To deliver positive pressure ventilation to non-breathing patients</p> Signup and view all the answers

    Which device is indicated for chronic oxygen therapy needs?

    <p>Oxygen hood</p> Signup and view all the answers

    What does a T-piece device used on the end of an ET tube help with?

    <p>Weaning from a ventilator</p> Signup and view all the answers

    What is the function of a humidifier in anesthesia equipment?

    <p>To add moisture to inhaled gases</p> Signup and view all the answers

    Which equipment plays a role as a principal heat and moisture exchanger in the upper respiratory tract?

    <p>Oxygen tent</p> Signup and view all the answers

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