Guillén Perales, J [Catheter knotting during continuous brachial plexus analgesia by the paraescalene approach]. [electronic resource] - Revista espanola de anestesiologia y reanimacion Oct 2006 - 520-1 p. digital Publication Type: Case Reports; Letter ISSN: 0034-9356 Subjects--Topical Terms: Analgesia--instrumentationBrachial PlexusCatheterizationEquipment FailureFemaleHumansMiddle Aged