Accumulation of fibrinous exudates, red blood cells, and bacteria
As a result, the inflammatory process attracts more neutrophils, edema of the airways occurs, and fluid leaks from the capillaries and tissues into alveoli
Alveoli fill with fluid and debris (consolidation)
Increased production of mucus (airway obstruction)
Normal O2 transport is affected, leading to clinical manifestations of hypoxia (e.g., tachypnea, dyspnea, tachycardia)