Some complications of general and conduction anaesthesia
General anaesthesia	Conduction anaesthesia
Airway obstruction	Toxicity of drug
Aspiration of gastric contents	Accidental intravascular injection
Allergy or hypersensitivity	Allergic reactions
Hypotension (including supine hypotension in pregnancy)	Massive spread of spinal anaesthetic
Cardiac dysrhythmias	Cardiac depression by local anaesthetic
Trauma to mouth, pharynx, teeth and larynx	Spread of sepsis
Respiratory depression	Depression of the central nervous system and convulsions
Increased intracranial pressure
Postoperative hypoxia
Toxic damage to liver or kidneys