Lower respiratory disorders are conditions that obstruct or restrict tracheobronchial tubes and prevent the exchange of gas within the lungs. These conditions are referred to as chronic obstructive pulmonary disease (COPD) and include chronic bronchitis, bronchiectasis, emphysema, and asthma.
COPD obstructs the patient's airway by increasing resistance of the airflow during inspiration and expiration. The result is an impairment of oxygen reaching lung tissues that can in some cases irreversibly damage lung tissues.
The airway obstruction occurs when the bronchioles constrict (bronchospasm) and mucous secretions increase causing the patient to experience difficulty breathing (dyspnea).
Was this article helpful?
If you suffer with asthma, you will no doubt be familiar with the uncomfortable sensations as your bronchial tubes begin to narrow and your muscles around them start to tighten. A sticky mucus known as phlegm begins to produce and increase within your bronchial tubes and you begin to wheeze, cough and struggle to breathe.