DRUGS ACTING ON RESPIRATORY DISODERS

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6.1;;INTRODUCTION''

 Air enters the nose and travels via the nasopharynx, oral pharynx, and glottis. The actual gas exchange happens only in the alveoli. Two adult lungs have about 300 million alveoli. These offer a surface area of about 160 m2, which is 80 times larger than the surface area of our skin and about equal to the single area of a tennis court. 

6.2;; Antitussives are prescribed for unproductive coughs and suppress the cough reflex.

drug under substance control; dosage every 4 hours

is NOT a medicine of choice for brain injury related to CNS depression because it acts on the center of the brain.

Because of its potential side effects, including as sleepiness and sedation, it is cautiously used in patients with a history of drug addiction and individuals who are driving.

...contraindicated in patients who must cough to keep their airways open, such as post-operative patients, because it may cause secretions to build up., trachea, right and left bronchi, which branch and re-branch into bronchioles, and finally ends in a collection of alveoli in each nostril.

The actual gas exchange happens only in the alveoli. Two adult lungs have about 300 million alveoli. These offer a surface area of about 160 m2, which is 80 times larger than the surface area of our skin and about equal to the single area of a tennis court. 

6;3;; Decongestants are medications that reduce blood flow to the upper respiratory tract and the excessive release of mucus.

Pseudoephedrine used orally (Decofed)

.for treatment of pain and congestion from otitis media, allergic rhinitis, and common cold-related nasal congestion

 Decongestants

for the treatment of allergic rhinitis in individuals who are no longer responding to other decongestants, are currently quite popular. The following negative effects are frequent when decongestants are administered as nasal sprays or drops in the nose:

1. itching

2.burning.

3. coughing

4. more frequent nasal drainage

5. Modified taste perception