Acta anaesthesiologica Belgica
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In regional anesthesia sudden and severe complications occur from time to time and may rapidly turn into life threatening situations. Their rarity might well be their most vicious characteristic. Therefore, awareness of the possible complications, careful preparation to cope with them, vigilance enabling prompt recognition of their occurrence and quick administration of the appropriate treatment are all essential for a safe practice of regional anesthesia. The routine use of pulse oximetry is now strongly recommended.