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The aortic valve is a valve in the human heart between the left ventricle and the aorta. It is one of the two semilunar valves of the heart, the other being the pulmonary valve. The aortic valve normally has three cusps or leaflets, although in 1-2% of the population it is found to congenitally have two leaflets. The aortic valve is the last structure in the heart the blood travels through before flowing through the systemic circulation.
When the left ventricle contracts (systole), pressure rises in the left ventricle. When the pressure in the left ventricle rises above the pressure in the aorta, the aortic valve opens, allowing blood to exit the left ventricle into the aorta. When ventricular systole ends, pressure in the left ventricle rapidly drops. When the pressure in the left ventricle decreases, the aortic pressure forces the aortic valve to close. The closure of the aortic valve contributes the A2 component of the second heart sound.
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Objectives: The aim of the study is to Determine, prevalence, possible risk factors, aetiology and outcome of patient with atrial fibrillation admitted into medical and cardiac units at...
Background: Ventricular Septal Defect (VSD) is the commonest congenital cardiac anomaly in Bangladesh. For this reason, patch repair of VSD is commonly performed cardiac surgery...
