IJCS | Volume 31, Nº2, March / April 2018

104 Figure 6 – Total occlusion of the left subclavian artery. Balzan et al. Atherosclerosis in the internal thoracic artery Int J Cardiovasc Sci. 2018;31(2)97-106 Original Article the predictors and the outcome. However, we consider this prevalence value to be significant, since a CABGwith arterial graft failure can lead to serious complications, increasing mortality, and decreasing the effectiveness of the procedure. Conclusion In this study, the prevalence of atherosclerotic lesions and lesions that made the use of the LITA as an arterial graft unfeasible in patients candidates for CABG, evidenced by coronary angiography, were 7.7%. Thus, it is prudent to consider the preoperative assessment of the LITA in patients with indication for CABG, especially in the presence of clinical evidence of subclavian occlusion and AOD. Author contributions Conception and design of the research: Balzan HFM, Battilani RVL, Mangili OC, Franchetti M, Mangili LC, Maia JP. Acquisition of data: Balzan HFM, Battilani RVL, Moura DD, Lage BFM. Analysis and interpretation of the data: Balzan HFM, Battilani RVL, Mangili OC, Franchetti M, Mangili LC, Maia JP, Moura DD, Lage BFM. Statistical analysis: Balzan HFM, Battilani RVL, Mangili OC, Mangili LC, Maia JP. Obtaining financing: Balzan HFM, Battilani RVL, Mangili OC, Franchetti M. Writing of the manuscript: Balzan HFM, Battilani RVL, Mangili OC, Franchetti M, Moura DD, Lage BFM. Critical revision of themanuscript for intellectual content: Balzan HFM, Battilani RVL, Mangili OC, Franchetti M, Mangili LC, Maia JP, Moura DD, Lage BFM. Supervision / as the major investigador: Balzan HFM, Battilani RVL, Mangili OC, Franchetti M. Potential Conflict of Interest No potential conflict of interest relevant to this article was reported. Sources of Funding There were no external funding sources for this study. Study Association This study is not associated with any thesis or dissertation work. Ethics approval and consent to participate This article does not contain any studies with human participants or animals performed by any of the authors.