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In cardiology, aortic valve area calculation is an indirect method of determining the area of the aortic valve of the heart. The calculated aortic valve orifice area is currently one of the measures for evaluating the severity of aortic stenosis. A valve area of less than 1.0 cm 2 is considered to be severe aortic stenosis. [1] [2]
Aortic stenosis; In the center an aortic valve with severe stenosis due to rheumatic heart disease. The valve is … surrounded by the aorta. The pulmonary trunk is at the upper right. The right coronary artery, cut lengthwise, is at the lower left. The left main coronary artery, also cut lengthwise, is on the right. Specialty: Cardiac surgery ...
The Sokolow-Lyon index: [11] [12] S in V 1 + R in V 5 or V 6 (whichever is larger) ≥ 35 mm (≥ 7 large squares) R in aVL ≥ 11 mm; The Cornell voltage criteria [13] for the ECG diagnosis of LVH involve measurement of the sum of the R wave in lead aVL and the S wave in lead V 3. The Cornell criteria for LVH are: S in V 3 + R in aVL > 28 mm (men)
In the heart, concentric hypertrophy is related to increased pressure overload of the heart, often due to hypertension and/or aortic stenosis. The consequence is a decrease in ventricular compliance and diastolic dysfunction, followed eventually by ventricular failure and systolic dysfunction. [citation needed]
While x-ray and ECG might indicate aortic stenosis, echocardiography is the diagnostic procedure of choice. US findings also help in grading the severity of the disease. In cases of symptomatic severe aortic stenosis, AVR is warranted. In cases of asymptomatic but severe aortic stenosis, more factors should be taken into consideration. [6]
In individuals with aortic stenosis, after a premature ventricular contraction (PVC), the following ventricular contraction will be more forceful, and the pressure generated in the left ventricle will be higher. Because of the fixed obstruction that the stenotic aortic valve represents, the post-PVC ascending aortic pressure will increase as well.
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