What Is an Aortic Sinus?
Aortic sinus, the aortic valve's opposite arterial wall bulges outward, and the lumen between the valve and the aortic wall is called the aortic sinus or Val-salvaantrum, referred to as Val'sal sinus. The aortic sinus can be divided into left sinus, right sinus, and posterior sinus. The coronary arteries usually open in the aortic sinus. The upper bound of the aortic sinus is curved. The left and right coronary arteries open in the left and right sinuses, respectively, and most of them open in the middle 1/3 of the sinus. The coronary arteries are mostly close to the upper boundary of the sinus, so it is not easy to block the coronary arteries when the aorta is opened. The aortic wall of the aortic sinus area is the thinnest, and in certain diseases (syphilis endocarditis, arteriosclerosis, etc.) may form aortic sinus aneurysms (especially common in the right semilunar valve). When the aneurysm ruptures, communication between the left and right ventricles is formed, which results in a clinical phenomenon unique to Valsalva sinus aneurysm.
- Chinese name
- Aortic sinus
- Foreign name
- aorticsinus; sinusofvalsalva; aortasinus
- Aortic sinus, the aortic valve's opposite arterial wall bulges outward, and the lumen between the valve and the aortic wall is called the aortic sinus or Val-salvaantrum, referred to as Val'sal sinus. The aortic sinus can be divided into left sinus, right sinus, and posterior sinus. The coronary arteries usually open in the aortic sinus. The upper bound of the aortic sinus is curved. The left and right coronary arteries open in the left and right sinuses, respectively, and most of them open in the middle 1/3 of the sinus. The coronary arteries are mostly close to the upper boundary of the sinus, so it is not easy to block the coronary arteries when the aorta is opened. The aortic wall of the aortic sinus area is the thinnest, and in certain diseases (syphilis endocarditis, arteriosclerosis, etc.) may form aortic sinus aneurysms (especially common in the right semilunar valve). When the aneurysm ruptures, communication between the left and right ventricles is formed, which results in a clinical phenomenon unique to Valsalva sinus aneurysm.
1 Aortic sinus 1, the anatomy of the aortic sinus:
- The aortic sinus is the aortic lumen corresponding to the ascending aortic root and the aortic valve leaflet. When the ventricle relaxes, the countercurrent vortex of the blood bulges outward, expanding into an opening formed by three aortic bulbs. Cavity. Its wall expands outward and becomes thin (average thickness 0.73mm), which is only half of the ascending aortic wall (thickness 1.5mm) above the aorta. When the aortic valve is closed, this structural feature of the aortic sinus helps to expand outward and reduce the pressure on the aortic valve by the blood. The lower bound of the aortic sinus is the base of the aortic annulus, and the upper bound of the base of the aortic annulus is the aortic ridge, the starting edge of the aortic wall. The height of the aortic sinus from the bottom of the annulus to the top of the junction is about 15mm. Aortic sinus is divided into left sinus, right sinus, and posterior sinus or right coronary sinus (referred to as right coronary sinus for short), left coronary sinus (referred to as left coronary sinus) and non-coronary sinus (referred to as short) No coronary sinus). The coronary orifice is generally located within the aortic sinus. Above the free edge of the aorta.
2 Aortic sinus 2, aortic sinus and adjacent structure relationship:
- The aortic root is located in the center of the heart. Its lower aortic sinus. The aortic sinus is deeply buried at the bottom of the heart and has a close relationship with every part of the heart. It is wedge-shaped inserted between the mitral valve and the tricuspid valve, the basal part is completely embedded in the surrounding tissue, and the latter half of the week is completely surrounded by the atria on both sides. The left coronary sinus is mostly located on the left side adjacent to the left atrial and pulmonary artery at the right ventricular outflow tract; it is located right behind and without the coronal abutment to the right atrium and the left atrium; the right coronary sinus is located directly to the right and sitting in the ventricle Septum muscle apex. Most of the right sinus adjacent to the right atrium and right ventricle and contiguous with the right ventricular outflow tract are located in the pericardial cavity, and a small part is close to the pulmonary sinus.