- The inhaler should always be well shaken before use.
- Inhalation and pressing the cylinder were not synchronized.
- The breath could not be held for long enough after the puff was taken in.
4 advanced inhalers types for asthma
Asthma inhalers are classified into different types depending on the mechanisms of their working. The various types include pressurized metered dose inhalers, breath actuated inhalers, inhalers with spacer devices and nebulizers. Each of these have their own merits and demerits.
Pressurized metered dose inhalers or SMDI: This type of inhaler was very popular and was unchallenged for about 40 years. Its biggest advantage is its simple operation. It can be used with almost all medicines. It consists of a pressured, inactive, carrier gas that propels the medicine in each puff when the piston is depressed. It is an L-shaped equipment with the longer arm containing the carrier gas and the shorter arm the mouthpiece. The common factors that made this inhaler less popular are listed below.
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