RT Journal Article SR Electronic T1 “Pseudo” Shearing of a Peripheral Nerve Catheter After Interscalene Block JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 556 OP 557 DO 10.1097/AAP.0000000000000139 VO 39 IS 6 A1 Brendan Carvalho A1 Ryan Derby A1 Jean-Louis Horn YR 2014 UL http://rapm.bmj.com/content/39/6/556.2.abstract AB