Tehran University of Medical Sciences Acta Medica Iranica 0044-6025 33 1-2 1995 06 15 58 60 Zahid Hussain Khan Seyed Ali Fakhr Tabatabaie 2015 09 28 A rightcephalic vein cannulation was performed in a patienJ scheduled/or elective craniectomy in order to keep a constant record ofthe intra-operative fluid volume. The flow ofthefluid through catheter was sluggish. The catheter was cautiously and gingerly withdrawn after an x...,.ay report con/innedknotting at the distal end. We believe that a chest radiograph is mandatory to rule out catheter knotting ifan impediment is anticipated in the flow. https://acta.tums.ac.ir/index.php/acta/article/view/1667 https://acta.tums.ac.ir/index.php/acta/article/download/1667/1660