THE ARTERIAL ANASTOMOSIS OF THE ATRIOVENTRICULAR JUNCTIONAL AREA OF THE HUMAN HEART
- VernacularTitle:人心脏房室连接区的动脉吻合
- Author:
Changzhi CHEN
- Publication Type:Journal Article
- From:
Acta Anatomica Sinica
1954;0(02):-
- CountryChina
- Language:Chinese
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Abstract:
The arterial anastomosis of the atrioventricular(A-V)junctional area of 14adult human hearts was studied with techniques of the coronary radiography,micro-dissection and corrosion.The anastomotic arteries related are the A-V node artery,Kugel's artery,theostial branch of the coronary sinus,the first and second anterior septal arteries,theposterior superior septal artery,the first posterior septal artery and the descendingseptal artery.All the arteries mentioned above form lots of intercoronary andintracoronary anastomoses in the upper interventricular septum and the lower intera-trial septum.The anastomotic branches exist in every heart.The average numberof anastomotic branches is 5 in each heart,and in one of the 13 hearts studied withthe coronary radiographic technique,9 branches were found,being the highestnumber.So far as the normal adult hearts are concerned,the diameter of theanastomotic branches in and/or around the A-V junctional area are 101～200 micrain general and increased in case of coronary occlusions or heart hypertrophy.The characteristics of the terminal branches of the A-V node artery are descri-bed in detail in this article.The A-V node artery was found the only artery whichcould be anastomosed with all other arteries of the A-V junctional area.It is themost important collateral branch.The junctional area could be supplied from otherarteries through its anastomotic branches.In view of the characteristic of the arterial anastomosis of the A-V junctionalarea,it is suggested that an effective compensation for the anemia of the A-V junc-tional area could be obtained from the anastomotic branches when coronary occlu-sions involve the A-V node artery.
