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Precisión de la tomografía de 64 cortes en el diagnóstico de reestenosis de stent coronarioKeywords: restenosis, multislice computed tomography, invasive coronary angiography, coronary stent, cuba. Abstract: objective: to determine the accuracy of coronary angiography through 64-slice computed tomography in detecting in-stent restenosis. method: fifty-two patients with 76 coronary stents and suspicion of restenosis were examined. initially, they underwent coronary angiography through 64-slice computed tomography, and subsequently invasive coronary angiography as gold standard. diagnostic efficiency indexes were calculated. results: in the stents of 3 mm or more of diameter, tomography sensitivity, specificity, positive and negative predictive value were 95, 98, 95 and 98% respectively, with positive likelihood ratio of 42 (ci95%, 6 to 290) and negative of 0.05 (ci95%, .01 to .35), validity of 97% and kappa of 0.93 (ci95%, .83 to 1), (p ≤ 0.00001). in the stents smaller than 3 mm, the indexes of diagnostic efficiency and kappa considerably decreased, loosing the statistical significance (p >0.05). conclusions: coronary angiography through 64-slice computed tomography is an accurate, non-invasive clinical technique for the detection of in-stent restenosis, especially with stents of 3 mm or more of diameter, and reliable allows identification of patients who need to undergo or not control invasive coronary angiography.
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