First aid for choking requires following certain steps. These include the removal of obstacles to the airway, puncture first aid, endotracheal intubation and oxygen administration. 1. Clearing obstacles to the airway: in order to restore spontaneous respiration as soon as possible, the measures used include pulling out food from the mouth, impacting foreign objects in the throat, draining foreign objects in the throat and patting the back to encourage the expulsion of foreign objects from the trachea. 2. Puncture: This is used to help the patient establish respiration, and requires the use of a cricothyroid puncture to establish an artificial airway. 3. Endotracheal intubation: This is used to remove obstructions from the patient’s airway to avoid interfering with ventilation. 4. Oxygenation: This is indicated in cases of severe hypoxia and requires high-flow oxygen therapy. First aid for asphyxiation carries a high risk and requires the guidance of a specialist.