Easi-breathe inhaler

Figure 9.8 shows an example of an Easi-Breathe inhaler. 

Easi-Breathe inhalers are suitable for children over eight years, and some 5- to 7-year-olds may be able to use them. These products are often licensed for younger children but in practice are difficult to use and not generally used for patients under eight. 

Inhalation Metered dose inhaler Aerohn Autohaler Easi-Breathe Non- proprietary 3M A H 100 pg/inhalation 100 pg/inhalation 100 pg/inhalation... 

The Easi-Breathe is a breath-actuated metered-dose aerosol inhaler developed by Norton Healthcare. The device is primed when the mouthpiece is opened. When the patient breathes in, the mechanism is triggered and a dose is automatically released into the airstream. The inhaler works on a pneumatic principle. An internal vacuum restrains an operating spring. A valve that is operated in response to the patient s inhalation that allows the spring to fire the canister releases the vacuum. It can be actuated at a very low flow of approximately 20 L/min (72). Not surprisingly the device scored better than a pMDI on a number of features, including ease of use and having an attached mouthpiece cover. Practice nurses found it easier to teach and patients easier to learn to use than a conventional pMDI (73). 

Price DB, Pearce L, Powell SR, Shirley J, Sayers MK. Handling and acceptiabflity of the Easi-Breathe device compared with a conventional metered dose inhaler by patients and practice nurses. Int J Clin Pract 1999 53 31-36. 

The first inhalation of a newborn baby requires an extraordinary effort the lungs become inflated and a large fluid/air interface is created. This is opposed by the interfacial tension of the alveoli. To overcome this difficulty, a special lung surfactant is released from alveolar cells and is spread to form a mono-layer at the surface of the alveoli. It reduces the interfacial tension and provides the alveoli with the proper interfacial rheological characteristics that allow easy breathing. 

It s easy to understand that if you breath air containing gases, mists, fumes, or whatever, you will inhale these materials along with the air. But what happens then Normally, you inhale by way of your nose, although if your nose is blocked, you can inhale through your mouth. Inhaling... 

The most common route of worker exposure in the anthrosphere is through inhalation of gases, vapors from liquids, and suspended particles. Whereas it is relatively easy to protect them from dermal exposure and ingestion, workers normally must breathe ambient air, which may contain toxicants. 

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