123 patients underwent sharp recanalization of chronic venous occlusions.Medtronic brockenborough transeptal needle was amongst the devices used.Technical success was achieved in 111 (90.2%) patients.There were 3 (2.4%) severe, 1 (0.8%) moderate, and 7 (5.7%) minor adverse events.Severe adverse events included 1 case each of pericardial tamponade, hemothorax, and inferior vena cava filter occlusion.Specifically, in 1 (0.8%) procedure, there was perforation of the right brachiocephalic vein with resulting right hemothorax during a successful recanalization of an occluded right jugular vein with a transseptal needle and loop snare, managed with placement of a 10 mm 9 4 cm non-medtronic stent and uncomplicated placement of chest tube.In 1 (0.8%) procedure, there was re-occlusion of the inferior segment of the patient¿s already-present inferior vena cava filter after successful sharp recanalization of an occluded right ilio-caval confluence, which was treated successfully with pharmacomechanical thrombolysis.There were 7/123 (5.7%) minor adverse events, which included 4 (3.3%) cases of self-limited retroperitoneal extravasation and 1 (0.8%) case each of self-contained extravasation into the mediastinum, pelvis, and left upper arm.
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