Vascular pattern of myocardium of right ventricle of human heart.

Abstract

Apart from comparisons of the density of the blood supply of the right and left ventricles in various age-groups (e.g. Gross, 1921;Campbell, 1929;Whitten, 1930a, b;Ehrich, de la Chapelle, and Cohn, 1931;Gross and Kugel, 1933), the arterial pattern of the myocardium of the right ventricle of the human heart has, in the past, received little attention. More recently, Mitchell and Schwartz (1965) and Fulton (1965) have published radiographs of the blood supply of both ventricles, but except for Fulton's description of the anastomotic vessels these investigators did not comment on the normal detailed vascular anatomy of the right ventricle. This paper describes the vascular pattern of the right ventricle seen in a study of a series of human hearts,t and discusses the possible importance of the left coronary arterial tree in the supply of the right ventricle. MATERIAL AND METHODSDetails of the hearts studied, the methods used to inject the coronary arteries with Chromopaque, to take microradiographs of transverse ventricular slices onto Kodak High Resolution plates, and the gross and microscopical examination of each heart have already been. published (Farrer-Brown, 1968a, b). RESULTSIn 49 of the 52 hearts studied the right coronary artery supplied all of the right ventricular free wall, except the anterior margin which was supplied by branches of the left anterior descending artery: the right posterior descending artery supplied the posterior wall and the right marginal artery the lateral

The structure of the vascular system of the septomarginal trabecula in the heart of an adult

“…Gross was the first researcher to observe the constant occurrence of the artery of the SMT (ramus limbi dextri) in 1921, and other researchers have confirmed its presence. [3][4][5][6][7][8][9][10][11][12] It is often described as a branch of one of the septal arteries, which branches off from the anterior descending artery. While studying the position of the artery of the trabecula, Reig et al noticed that in 20 cases (71%) this artery originated in the 2 nd anterior septal artery, in 5 cases (18%) in the 1 st anterior septal artery, and in 2 cases (7%) in the 3 rd one.…”

“…Similar data can be found in the literature. 3,7,9 According to many authors, properly-shaped vessels of the trabecula may create anastomoses between the system of the left and right coronary artery.…”

“…3,[20][21][22][23][24][25][26] The research suggests that myocardial infarction of the right ventricle is caused by the narrowing of the proximal section of the right coronary artery, especially of the abovementioned artery of the trabecula. 22 When the vessel is unobstructed in the anterior-lateral part of the free wall of the right ventricle, ischemic damages occur less frequently.…”

Vectorcardiographic and Electrocardiographic Features of Exercise Stress Test-Induced Reversible Right Ventricular Injury Current in Patients after First Inferior Myocardial Infarction

“…This could have been due to the problem of redistribution of thallium radionuclide between injection and imaging [9] or due to more severe RV ischaemia developing after the VCG examination. The vascular supply of the right ventricle is usually from the right coronary artery (90%) and less frequently from the left circumflex coronary artery (10%) [10]. The presence of reversible RV injury current on exercise and re-distribution thallium-201 images implies that either the right or left circumflex cor onary artery must be involved.…”

Right heart on multidetector CT

“…The branches of the left anterior descending artery supply the anterior and anteroseptal regions. The conus artery supplies the infundibulum [13,15] (Figure 10). …”