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Bronchitis is the inflammation of the mucous membranes of the bronchial airways. It is
caused by viral infections such as influenza, or pyogenic organisms such as streptococcus, pneumococcus, or staphylococcus. It is often preceded by a common cold.
Acute bronchial irritation may also be caused by various physical and chemical agents such as
dust and fumes. Allergic factors should be considered as well. Predisposing factors are
exposure, chilling, fatigue, and malnutrition. The pathway of air to the bronchi and lungs
is still capable of warming inspired cold air, but there are limits. Because of this, it is
inadvisable to sleep in extreme cold or to vigorously exercise in extremely cold air without
wearing a face mask, so that the heat produced from exhalation will be available to the
inspired air.
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![]() Bronchitis
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![]() he most obvious symptom of
bronchitis is coughing. The bronchi (the main branching passageways of the lungs) become
inflamed. The cough associated with bronchitis usually starts off dry and hacking, then
becomes rattling. It generally produces grayish or yellow mucous, and is often accompanied
by wheezing or mild shortness of breath. ![]() ![]() ![]() |
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