Aerosol Therapy Equipment PDF

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