The morphological significance of the human sinuatrial nodal branch (artery)
The morphological significance of the human sinuatrial nodal branch (artery)
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DOI：
10.1007/s00380-003-0710-3
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发表时间：
2003-09
影响因子：
1.5
通讯作者：
T. Kawashima;H. Sasaki
中科院分区：
文献类型：
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作者：
T. Kawashima;H. Sasaki
窦房结分支/动脉(SANB)是冠状动脉的窦房结分支，在解剖学上被认为是一种重要的动脉，因为它除了具有临床意义外，还被用作识别窦房结的标志。在以前的报告中，SANB被证明有2-5条路线，它在91%-100%的心脏中只有一个分支。这些结果表明，在SANB被切割或闭塞的情况下，对其进行补偿是不可能的。因此，我们使用106个成人心脏对SANB进行了宏观的重新研究，以获得对其形态的详细了解。本研究取得了以下成果和讨论。(1)106例患者中，57例(53.7%)SANB有6条分支，其中57例有两支或以上分支。(2)SANB单支病例中，25例(51.0%)为近端动脉环形成所致。左、右冠状动脉近端环支单支和两支或两支以上共82例(77.4%)。这些结果有力地表明，对SANB的赔偿可能发生在大多数案件中。(3)我们推测SANB是由于两侧耳廓外侧动脉环和两侧内侧动脉环的消失和吻合所致。
The sinuatrial nodal branch/artery (SANB), the sinuatrial nodal branch of the coronary artery, is anatomically regarded as a significant artery since it is used as a landmark to identify the sinuatrial node, in addition to its clinical significance. In previous reports, the SANB has been shown to have 2–5 routes and it had only one branch in 91%–100% of hearts. These results indicate that compensation for the SANB is not possible in the case of its being cut or occluded. Therefore, we macroscopically reinvestigated the SANB using 106 human adult hearts to obtain a detailed understanding of its morphology. The following results and discussions were obtained from our study. (1) The SANB was observed to take six routes and two or more branches were found in 57 out of 106 cases (53.7%). (2) In those cases in which the SANB had only one branch (46.3%), it was observed to be the result of forming the proximal arterial loop in 25 cases (51.0%). The total of these cases with one branch with the proximal arterial loop between the right and left coronary arteries and those with two or more branches were 82 cases (77.4%). These results strongly suggest that compensation for the SANB could occur in the majority of cases. (3) We speculated that the SANB was generated by the disappearance of and the anastomosis between the lateral arterial loop, lateral to both auricles, and the medial arterial loop, medial to both auricles.