Surgical Significance of the Aortic Root and its Neighbouring Structure Relationships

Abstract：Objective: To measure the calibration of diffrent levels in aortic root and evaluate the relationships between the aortic sinuses and its neighbouring structure. Methods:Thirty heart specimens from cadaver of normal adult were studied. The dimensions of four levels in aortic root were measured and the relationships between the aortic sinues and its neighbouring structure were observed. Results: The dimensions of four levels in aortic root obtained as follows; Sinus＞STJ1＞STJ0＞Base(P＜0.05).The dimensions of the aortic valve leaflets were measured. The right coronary leaflet was larger than those of the left coronary and noncoronary leaflets. But there was no statistical significane (P ＞ 0.05 ). The relationships between the middle axis of the anterior valve of the bicuspid valve and the aortic sinuses were examined.The middle axis of the anterior valve in 26 specimens (86.6%) located between the left coronary sinus and the noneoronary sinus. The relationship between the aortic prominence of the right atrium and the aortic sinuses was examined. The aortic prominence was formed from noneoronary sinus in 22 specimens (73.3%). The relationship between the middle point of the right and left pulnonary valves and the aortic sinuses was examined. The middle point of the right and left pulmonary valves in 24 specimens (80%) was faced to the point between the right and left aortic sinuses. Conclusion: The dimension of the four levels in aortic root is as follows, sinus＞STJ1＞STJ0＞Base (P＜0.05). There was no statistical significance in the size of the three aortic valve leaflets (P＞0.05).