Secondhand smoke
| Risks | Pathophysiology |
|---|---|
| Respiratory disease (e.g., pneumonia, asthma) | Impaired mucociliary clearance of respiratory tract, impaired phagocytosis by alveolar macrophages, immune & inflammatory cell recruitment to lung tissue |
| Recurrent otitis media | Impaired mucociliary clearance of eustachian tube |
| Prematurity & low birth weight | Transplacental exposure to components of tobacco smoke |
| Sudden infant death syndrome | Likely related to impaired arousal & cardiovascular responses to stimuli |