A variety of substances can lead to mechanical obstruction, including but not limited to:
Food items: Large chunks of food or improperly chewed pieces can become lodged in the esophagus or airway. Swallowable objects: Items such as batteries, toys, or coins, especially in children, can cause blockages. Pharmaceutical forms: Certain formulations, like elongated tablets or capsules, can become stuck if not taken with sufficient water. Industrial materials: Substances like silica gel packets can swell and obstruct if consumed.
