6.1 Complication
Pain.
Nausea and vomiting - up to 30% of patients.
Damage to teeth - 1 in 4,500 cases.
Sore throat and laryngeal damage.
Anaphylaxis to anesthetic agents - figures such as 0.2% have been quoted.
Cardiovascular collapse.
Respiratory depression.
Aspiration pneumonitis - up to 4.5% frequency has been reported; higher in children.
Hypothermia.
Hypoxic brain damage.
Nerve injury - 0.4% in general anesthesia and 0.1% in regional anesthesia.
Awareness during anesthesia
Embolism - air, thrombus, venous or arterial.
Backache.
Headache.
Idiosyncratic reactions related to specific agents - e.g., malignant hyperpyrexia with suxamethonium, succinylcholine-related apnea.
Iatrogenic - e.g., pneumothorax related to central line insertion.
Death.