To evaluate the cause of immediate occlusions (those occurring during the first month postoperatively) of infrainguinal reconstruction using in situ saphenous vein.
Retrospective clinical study.
University hospital, Finland.
329 in situ saphenous vein bypasses done during the period 1988-1995.
Immediate result, and causes of occlusion during the first month postoperatively.
65 of the reconstructions (20%) failed within 1 month, 46 of which were reoperated on, 25 successfully, giving a 1-month secondary patency of 88% (289/329). The cause of the occlusion was related to the vein graft in 29 (45%) and the result of inadequate run-off in 19 (29%).
Many immediate occlusions of in situ saphenous vein bypass are graft-related or the result of technical problems, necessitating aggressive intraoperative evaluation.