Medicated Aerosol Therapy – Flashcards
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Small Volume Nebulizers (SVN) Max. volume is
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5 or 6 ml
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Small Volume Nebulizers (SVN) Component parts:
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1. jet utilizing Bernoulli Principle 2. compressed gas source 3. capillary tube 4. reservoir to hold medication 5. baffle 6. ambient air inlet 7. patient interface
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Small Volume Nebulizers (SVN) Performance:
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1. residual volume of liquid in the medication cup is called dead volume 2. only 10% of intended medication reaches the lower airways during optimal operation
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Breath Activated Nebulizer (BAN)
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1. delivers 3-4 times the medication 2. only nebulizes on Inspiration 3. eliminates waste during Expiration 4. treatment takes less time (often just 3 min) 5. can be cost prohibitive
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Continuous Nebulization
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1. HEART nebulizer (High Output Extended Respiratory Therapy) 2. HOPE 3. Administration of bronchodilators continuously (pt. needs to wear mask and be monitored continuously) 4. 240 ml reservoir
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vaporizer is
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a visible mist (aerosol). Mist evaporates and creates humidity.
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Small Particle Aerosol Generator (SPAG)
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1. specifically designed to deliver Ribavirin (Virazole) 2. Treatment of Respiratory Syncytial Virus (RSV) 3. Scavenging system to collect escaped aerosol (potent drug with adverse side effects)
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when child is crying, how does E compare to I?
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E is much longer than I making it difficult to administer meds. Need to stop crying, make treatment a game
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pMDI is
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Pressurized Metered Dose Inhaler
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Features of MDI's
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1. Portable, compact and relatively easy to use. 2. Contains micronized powder, Hydrofluoroalkane (HFA), Liquid propellants, Surfactant 3. Preferred method of bronchodilator delivery
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When could you use a holding chamber with a mask?
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often with kids, sometimes with adults if problems with inspiration
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Distribution of medication in lungs by delivery device
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DPI - 27% MDI - 9% MDI w/ Holding chamber - 20% Nebulizer - 12%
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DPI
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Dry Powder Inhaler
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Soft Mist Inhaler
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newest inhaler on the market delivers a metered dose in a soft mist Respimat - Albuterol plus Ipratropium bromide
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Controlling Environmental Contamination
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greatest occupational exposure is from administering of Ribavirin
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Protection from Environmental Contamination
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1. negative pressure rooms 2. Booths and Stations with HEPA filters 3. PPE
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