This document discusses airway obstruction and foreign body aspiration/ingestion. It notes common causes of airway obstruction include trauma, infections, drugs, and sleep apnea. Children are more prone to foreign body aspiration due to lack of teeth/coordination and curiosity. Prevention methods include using rubber dams and posterior packing during procedures. Foreign bodies can be life-threatening but are often retrievable if the patient is conscious. Treatment depends on if the obstruction is partial or complete and includes back blows, abdominal thrusts, finger sweeps, and chest compressions.