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Airway Humidification Devices in Anesthesia

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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?

Inspiratory limb (C) Signup and view all the answers

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

37C (C) Signup and view all the answers

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

To prevent over-humidification (A) Signup and view all the answers

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

To add heat and moisture to cool dry inspired gases (D) Signup and view all the answers

What is an advantage of passive humidifiers over active humidifiers?

Produce 60–80% humidification of inspired gases (A) Signup and view all the answers

What happens when passive humidifiers like HMEs become occluded?

They can become occluded with secretions, blood or water (B) Signup and view all the answers

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

Passive humidifier (B) Signup and view all the answers

What is the primary disadvantage of using a passive humidifier?

Increase the resistance of the breathing system (B) Signup and view all the answers

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

By returning heat and moisture during expiration to cool, dry gas on inspiration (A) Signup and view all the answers

What is the purpose of an Ambu bag?

To deliver positive pressure ventilation to non-breathing patients (C) Signup and view all the answers

Which device is indicated for chronic oxygen therapy needs?

Oxygen hood (C) Signup and view all the answers

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

Weaning from a ventilator (D) Signup and view all the answers

What is the function of a humidifier in anesthesia equipment?

To add moisture to inhaled gases (C) Signup and view all the answers

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

Oxygen tent (A) Signup and view all the answers