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Ann Thorac Surg 2003;75:1161-1164
© 2003 The Society of Thoracic Surgeons

Original article: cardiovascular

Patency rates of three arterial grafting patterns to the left anterior descending and diagonal coronary arteries in symptomatic patients

Martin Brueck, MDa*, Wilfried Kramer, MDa, Paul R. Vogt, MDb, Werner G. Daniel, MDc, Harald Tillmanns, MDa, Josef Ludwig, MDc

a Department of Cardiology, University of Giessen, Giessen, Germany
b Department of Cardiothoracic Surgery, University of Giessen, Giessen, Germany
c Department of Cardiology, University of Erlangen, Erlangen, Germany

Accepted for publication November 1, 2002.

* Address reprint requests to Dr Brueck, Department of Cardiology, Clinic of Wetzlar-Braunfels, Forsthausstrasse 1, D-35578 Wetzlar, Germany
e-mail: martinbrueck{at}t-online.de

BACKGROUND: The use of internal thoracic arteries is an established method for treating coronary artery disease because of their excellent long-term patency rates. However, these results mainly referred to the left internal thoracic artery (LITA) grafted to the left anterior descending coronary artery (LAD). The aim of this study was to compare the patency rate of the LITA after its placement to the diagonal branch.

METHODS: A total of 302 patients (median age 65 years) with previous arterial revascularization were retrospectively enrolled in the study. We compared LITA grafts to the LAD with those to the diagonal branch and with sequential LITA grafts to both vessels with respect to the patency rate over a median follow-up of 39 months after prior operation. Angiography was performed for recurrent angina.

RESULTS: The average occlusion/stenosis rate of saphenous vein and LITA grafts were 43.1% and 14.1%, respectively (p < 0.0001). Of the 302 patients, 248 had received a single LITA graft to the LAD; 21 patients, a single LITA graft to the diagonal branch; and 33 patients, a sequential LITA graft to both vessels. Thirty-three LITA grafts to the LAD (13.3%), three LITA grafts to the diagonal branch (14.3%), and six sequential LITA grafts to the LAD and the diagonal branch (18.2%) were occluded or stenosed more than 50%, respectively (p = 0.68). Seventy-nine percent of LITA graft stenoses were located at the peripheral anastomosis.

CONCLUSIONS: Patency of single LITA grafts to the diagonal branch or sequential LITA grafts to the LAD and diagonal branch were comparable to single LITA grafts to the LAD. Most stenoses of LITA grafts were located at peripheral anastomoses.






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Copyright © 2003 by The Society of Thoracic Surgeons.