%0 Journal Article
%T Anatomical demonstration of the Internal Thoracic Artery and its implication in the Myocardial Revascularization Surgery
%A Fern¨˘ndez Aramburu
%A Juli¨˘n
%A Villegas
%A Lucas
%A Mas
%A Antonela
%A Froj¨˘n
%A Diego
%J Revista Argentina de Anatomia Online
%D 2012
%I Asociacion Argentina de Anatomia
%X The internal thoracic artery (ITA), also known as internal mammary artery (IMA) is often used in coronary artery bypass graft. The knowledge of its morphology, thus its major side branches, is essential to the cardiovascular surgeon. The aim of this work is to provide a description of the collateral branches of the ITA, providing anatomical landmarks for its identification (in our case the transversus thoracis muscle) and quantification as a basis for myocardial revascularization surgery using the ATI. We also consider the importance of anatomical knowledge in the vascular steal phenomenon in situations where a branch is still permeable after the surgical procedure. A total of 13 routine dissections of the thoracic region were developed in caucasian cadavers, of indeterminate sex, formalized 10%. For better recognition and dissection of the ITA and its branches, an intravascular injection of natural latex was carried out (colored with red pigment) through the Subclavian Artery (SA). Through the investigations made, the right ITA had an average diameter of 4,0 mm at its origin and of 2.2 mm at the bifurcation level, pre-triangular branches were on average between 12 and 13 and between 4 and 5 triangular branches with a mean value of the origin of the ATI to 27.5 mm from the origin of the SA, and a mean value of the origin of the first collateral branch of the ITA to 31.7 mm from the ostium of the same in the SA. Regarding the left ITA, the values were 3.8 mm for the diameter at its origin and 2.3 mm at its bifurcation, between 12 and 13 pre-triangular side branches and between 2 and 3 triangular branches, 54, 5 mm from the origin of the SA and a mean value of the birth of the first branch of the ITA to 21.3 mm from the ostium of the same in the SA. The anatomical knowledge of the ITA and its collateral branches, both in terms of their origin, number and size, provides the surgeon a useful tool in bypass surgery used to develop a safe surgical technique and to avoid possible complications.
%K Subclavian Artery (SA)
%K Internal Thoracic Artery (ITA) or Internal Mammary Artery (IMA)
%K Collateral Branches
%K By-pass
%U http://www.anatomia-argentina.com.ar/RevArgAnatOnl-2012-3(3)-p86-esplacno-fernandezaramburu-full.pdf