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Asian Cardiovasc Thorac Ann 2003;11:102-106
© 2003 Asia Publishing EXchange Ltd

ORIGINAL CONTRIBUTIONS

Assessment of Coronary Bypass Graft Patency by Electron-Beam Computed Tomography

Tarek A Abdel Aziz, MD, Pramod Kumar, MD1, Nooshin Bazargani, MRCP2, Eman Al-Hato, MRCP2, Najib Al Khaja, MD

Department of Cardiothoracic Surgery
1 Department of Cardiology, Al Khaleej Apollo Heart Scan and Medical Center, Dubai, UAE
2 Department of Cardiology, Dubai Hospital, Dubai, UAE

For reprint information contact: Najib Al Khaja, MD Tel: 971 4 271 4444 Fax: 971 4 271 9340 email: drnajib{at}emirates.net.ae Department of Cardiothoracic Surgery, Dubai Hospital, PO Box 7272, Dubai, UAE.

Twenty-one patients undergoing coronary artery bypass grafting were prospectively evaluated by conventional selective coronary angiography and electron-beam computed tomography. Eighty bypass grafts (60 saphenous vein and 20 left or right internal mammary artery) were evaluated for patency. The sensitivity and specificity of electron-beam computed tomography were 72% and 100%, respectively; positive and negative predictive values were 100% and 92.5%, respectively. Sensitivity and specificity according to coronary region were: left anterior descending artery, 33% and 100%; diagonal artery, 67% and 100%; circumflex artery, 75% and 100%; right coronary artery, 100% and 100%. Electron-beam computed tomography is relatively accurate and a promising tool for noninvasive evaluation of graft patency after coronary artery bypass graft surgery.






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