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Airway Management

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Question
Answer
Suction   involves the application of negative pressure (vacuum) to the airways through a collecting tube  
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Airway obstruction can be caused by   Retained secretions Foreign bodies Structural changes  
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Retained secretions   Increase work of breathing Increase airway resistance  
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Retained secretions also   Hypoxemia -Hypercapnia -Atelectasis -Infection  
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Suctioning can be performed in either   The upper airway (oropharynx) The lower airway (trachea and bronchi)  
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Suction pressures   Infant: -80 to -100 mmHg Child: -100 to -120 mmHg Adult: -120 to -150 mmHg  
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Catheter Size “Rule of Thumb”   estimate the proper size of suction catheter to use with a given tracheal tube, first multiply the tube’s inner diameter by 2 then use the next smallest size catheter  
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