Key result
Multi-detector (64-row) computed tomography showed 100% sensitivity and 100% negative predictive value for detecting graft occlusion and stenosis compared to conventional coronary angiography.
Why the study?
Does multi-detector (64-row) computed tomography accurately diagnose graft occlusion and stenosis compared to conventional coronary angiography in patients after coronary artery bypass?
Cross-Sectional (n=60)
Does multi-detector (64-row) computed tomography accurately diagnose graft occlusion and stenosis compared to conventional coronary angiography in patients after coronary artery bypass?
Answers are grounded in this paper and cite their sources.
Multi-detector (64-row) computed tomography is a highly sensitive and specific non-invasive alternative to conventional angiography for evaluating graft occlusion and stenosis after coronary bypass.
Multi-detector (64-row) computed tomography has become an alternative to coronary angiography to diagnose graft occlusion and stenosis after coronary artery bypass. We compared the power of evaluation of multi-detector computed tomography with that of conventional coronary angiography in 60 patients who underwent coronary artery bypass with 135 grafts and 210 graft anastomoses. The diagnostic power of multi-detector computed tomography for graft occlusion was: 100% (2/2) sensitivity, 98.5% (131/133) specificity, 50% (2/4) positive predictive value, and 100% (133/133) negative predictive value; there were no significant differences in rates of occlusion among the different types of graft. The diagnostic power of multi-detector computed tomography for stenosis of the graft anastomosis was: 100% (2/2) sensitivity, 95.1% (194/204) specificity, 16.6% (2/12) positive predictive value, and 100% (194/194) negative predictive value, with no significant differences among grafts. Multi-detector computed tomography permits evaluation of bypass grafts and is much less invasive for the patients.
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Doi et al. (2008) conducted a cross-sectional in Post-coronary artery bypass (n=60). Multi-detector (64-row) computed tomography vs. Conventional coronary angiography was evaluated on Diagnostic power for graft occlusion and stenosis of the graft anastomosis. Multi-detector (64-row) computed tomography showed 100% sensitivity and 100% negative predictive value for detecting graft occlusion and stenosis compared to conventional coronary angiography.
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