ABC | Volume 111, Nº5, November 2018

Original Article Albertini et al The role of preoperative venography in reoperations Arq Bras Cardiol. 2018; 111(5):686-696 Table 3 – Distribution of venographic findings according to the CIED side and the anatomical location of the lesion Venographic findings Right side (n = 48) Left side (n = 52) Normal exam / discrete lesions (< 50% of vessel lumen) Subclavian vein 37 43 Transition from subclavian vein to innominate vein 46 44 Innominate vein 42 46 Joint of innominate vein and superior vena cava 33 46 Moderate stenosis Subclavian vein 4 5 Transition from subclavian vein to innominate vein - 4 Innominate vein 1 2 Joint of innominate vein and superior vena cava 8 2 Severe stenosis Subclavian vein 3 2 Transition from subclavian vein to innominate vein 2 3 Innominate vein 1 1 Joint of innominate vein and superior vena cava 3 3 Venous occlusion Subclavian vein 4 2 Transition from subclavian vein to innominate vein - 1 Innominate vein 4 3 Joint of innominate vein and superior vena cava 4 1 Collateral circulation Absent 19 29 Discrete 13 7 Moderate 5 8 Strong 11 8 CIED: cardiac implantable electronic device. Table 4 – Characteristics of surgical procedures performed in the study Characteristics of Surgical Procedures n = 100 Procedure performed, (%) Implant of additional lead without removing previously implanted lead 48 Implant of additional lead with removal of previously implanted lead 48 Only lead removal 4 Total number of transvenous leads at the end of the procedure, (%) None 4 One 6 Two 41 Three 42 Four 7 CIED side at the end of the procedure, n (%) Right 45 Left 54 Subxiphoid 1 CIED: cardiac implantable electronic device. 692