Aerosol Therapy Equipment PDF
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This document provides information on various types of aerosol therapy equipment. It describes how they function, their characteristics (including particle size and delivery methods), and their uses in different medical contexts.
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Proper Placement HME MUST go AFTER the wye in a circuit Wye Proximal to patient Needs to communicate with both inhaled and exhaled gas Copyright ©2005 by Thomson Delmar Learning. ALL RIGHTS RESERVED. 25 Copyright ©2005 by Thomson...
Proper Placement HME MUST go AFTER the wye in a circuit Wye Proximal to patient Needs to communicate with both inhaled and exhaled gas Copyright ©2005 by Thomson Delmar Learning. ALL RIGHTS RESERVED. 25 Copyright ©2005 by Thomson Delmar Learning. ALL RIGHTS RESERVED. 26 Come in many different shapes/sizes/brands 27 HME w/ Bacterial Filter Copyright ©2005 by Thomson Delmar Learning. ALL RIGHTS RESERVED. 28 Copyright ©2005 by Thomson Delmar Learning. ALL RIGHTS RESERVED. 29 Clinical Application of Aerosol Therapy Indications for Aerosol Therapy – AARC Clinical Practice Guidelines: Delivery of bland aerosols – Indications: upper aw edema, bypassed upper aw, sputum specimen/secretion mobilization Delivery of aerosols to the upper airway – Indications: upper aw inflammation, anesthesia, rhinitis, systemic dz. (example: inhaled insulin) Delivery of aerosols to the lung parenchyma – Indications: need to deliver a topical medication that has its site of action in the parenchyma (or is intended for systemic absorption) Copyright ©2005 by Thomson Delmar Learning. ALL RIGHTS RESERVED. 30 Physics of Humidity and Aerosol Therapy Physical Characteristics of Aerosols – Particle size and mass R, V, & M all increase/decrease directly As M decreases, g has less effect, & it will remain suspended longer – Hygroscopic Absorbs water, falls out of suspension – Tonicity Hypertonic, isotonic, & hypotonic – Electrical charge No physiologic effects, but may effect other equipment (EKG) Copyright ©2005 by Thomson Delmar Learning. ALL RIGHTS RESERVED. 31 Physics of Humidity and Aerosol Therapy (cont.) Factors Influencing Aerosol Deposition in the Airways – Particle size and gravity 1 to 5 microns ideal – Inertia Larger particles impact in oropharynx – Temperature and humidity Particles may evaporate/coalesce – Respiratory pattern Slow, deep insp. followed by a brief insp. Pause Proper instruction = better deposition Copyright ©2005 by Thomson Delmar Learning. ALL RIGHTS RESERVED. 32 Physics of Humidity and Aerosol Therapy (cont.) Application of Choked Flow – Choked flow is applied in many aerosol generators to produce an aerosol. – Capillary action draws liquid into gas stream – Baffle causes larger particles to fall out of suspension Smaller particles follow gas flow around baffle “Atomizer” has no baffle to stabilize particle size Copyright ©2005 by Thomson Delmar Learning. ALL RIGHTS RESERVED. 33 Pneumatic Nebulizer (p. 102) Copyright ©2005 by Thomson Delmar Learning. ALL RIGHTS RESERVED. 34 Aerosol Therapy Equipment Nebulizers – Produces particulate matter delivered into a gas stream – Mainstream and sidestream nebulizers Sidestream produces smaller particle size Copyright ©2005 by Thomson Delmar Learning. ALL RIGHTS RESERVED. 35 Copyright ©2005 by Thomson Delmar Learning. ALL RIGHTS RESERVED. 36 Small-Volume Nebulizers Volume of
