METERED DOSE INHALERS
Inhaled respiratory medications are often taken by using a device called a metered dose inhaler, or MDI. The MDI is a pressurized canister of medicine in a plastic holder with a mouthpiece. When sprayed, it gives a reliable, consistent dose of medication.
There are two methods for using an MDI. In many cases, the preferred method is with a device called a valved holding chamber (figure l). These devices attach to the MDI and hold the “spray” of medication. They make it easier to use the MDI and help get the medication into the lungs better. An MDI can also be used without a chamber (figure 2). These methods are described below.
Using an MDI with a valved holding chamber
1. Remove the cap from the MDI and chamber. Shake well.
2. Insert the MDI into the open end of the chamber (opposite the mouthpiece).
3. Breathe out completely.
4. Place the mouthpiece of the chamber between the teeth and seal your lips tightly around it.
5. Press the canister once.
6. Breathe in slowly and completely through the mouth.
7. Hold the breath for 10 seconds (count to 10 slowly) to allow the rnedication to reach the airways of the lung.
8. Repeat the above steps for each puff ,ordered by doctor. Wait about I minute in between puffs.
9. Replace the cap on MDI when finished.
10. In case of a corticosteroid MDI, rinse the mouth and gargle using water or mouthwash after each use.
11. Always use a chamber with a steroid MDI.
Using an MDI without a chamber
|Using an MDI without a chamber (figure 2)|
1. Remove the cap Prom the MDI and shake well.
2. Breathe out all the way.
3. Place the mouthpiece of the inhaler between the teeth and seal the lips tightly around it.
4. start to breathe in slowly and then press down on the canister one time.
5. Keep breathing in as slowly and deeply . (It should take about 5 to 7 seconds for you to completely breathe in.)
6. Hold the breath for 10 seconds (count to 10 slowly) to allow the medication to reach the airways of the lung.
7. Repeat the above steps for each puff ordered by doctor. Wait about I minute between puffs.
8. Replace the cap on the MDI when finished.
9. In case of corticosteroid MDI, should use a valved holding chamber as described above.
Care of MDI and chamber
For some MDI’s, remove the canister and rinse the plastic holder with warn running water once a week to prevent the holes from getting clogged. Shake well and let air dry
There are other medications in which the inhaler cannot be removed from the holder. These usually need to be cleaned by wiping the mouthpiece with a cloth or cleaning with a dry- cotton swab. Refer to the patient instructions that come with the inhaler.
Clean the chamber about once a week. Remove the soft ring at the end of the chamber. Soak the spacer in warm water with a mild detergent. Carefully clean and, rinse, and shake off excess water. Do not hand dry. Allow to completely air dry. Do not store the chamber in a plastic bag.