ANATOMY

Detailed explanation-1: -Etiology: Causative agents of lower respiratory infections are viral or bacterial. Viruses cause most cases of bronchitis and bronchiolitis. In community-acquired pneumonias, the most common bacterial agent is Streptococcus pneumoniae.

Detailed explanation-2: -Respiratory diseases may be caused by infection, by smoking tobacco, or by breathing in secondhand tobacco smoke, radon, asbestos, or other forms of air pollution. Respiratory diseases include asthma, chronic obstructive pulmonary disease (COPD), pulmonary fibrosis, pneumonia, and lung cancer.

Detailed explanation-3: -Respiratory infections can interfere with your breathing, making your breaths rapid, shallow, or leaving you feeling as if you can’t catch your breath. These complications increase your risk of respiratory failure, a condition that results from high levels of carbon dioxide in your blood.

Detailed explanation-4: -Bronchitis, a lung infection that causes coughing and fever. Bronchiolitis, a lung infection that mostly affects young children. Chest infection. Pneumonia. 25-May-2021