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  2. Aortic valve area calculation - Wikipedia

    en.wikipedia.org/wiki/Aortic_valve_area_calculation

    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]

  3. Pressure–volume loop analysis in cardiology - Wikipedia

    en.wikipedia.org/wiki/Pressure–volume_loop...

    Aortic stenosis. Aortic valve stenosis is abnormal narrowing of the aortic valve. This results in much greater LV pressures than the aortic pressures during LV ejection. The magnitude of the pressure gradient is determined by the severity of the stenosis and the flow rate across the valve. Severe aortic stenosis results in

  4. Wiggers diagram - Wikipedia

    en.wikipedia.org/wiki/Wiggers_diagram

    A Wiggers diagram modified from [1] A Wiggers diagram , named after its developer, Carl Wiggers , is a unique diagram that has been used in teaching cardiac physiology for more than a century. [ 1 ] [ 2 ] In the Wiggers diagram, the X-axis is used to plot time subdivided into the cardiac phases, while the Y-axis typically contains the following ...

  5. Aortic stenosis - Wikipedia

    en.wikipedia.org/wiki/Aortic_stenosis

    Under normal circumstances, in the absence of aortic stenosis, the heart is able to increase its output and thereby offset the effect of the dilated blood vessels. In some cases of aortic stenosis, however, due to the obstruction of blood flow out of the heart caused by the stenosed aortic valve, cardiac output cannot be increased. Low blood ...

  6. Wikipedia:Osmosis/Aortic valve diseases - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Osmosis/Aortic...

    Usually, the aortic valve opens to about 3-4 cm2, but with stenosis it can become less than 1 cm2. This is usually caused by mechanical stress over time, which damages endothelial cells around the valves, causing fibrosis and calcification, which hardens the valve and makes it more difficult to open completely.

  7. Transthoracic echocardiogram - Wikipedia

    en.wikipedia.org/wiki/Transthoracic_echocardiogram

    In this view, the mitral valve and aortic valve are in view and is roughly similar to the parasternal long axis. In this view, the LV outflow tract is best in alignment with the probe and so gives the best estimate of flow through the LVOT, which is commonly used to estimate aortic stenosis. Structures: Aortic valve; Mitral valve; Left ventricle

  8. Ventricular outflow tract obstruction - Wikipedia

    en.wikipedia.org/wiki/Ventricular_outflow_tract...

    The aortic valve is normally three leaflets but when it is bicuspid it is made of two. [6] This increases the risk for aortic stenosis due to increased stress on the leaflets, calcium deposition, turbulent blood flow, and scarring. If the stenosis is severe enough, surgical intervention may be necessary. [1]

  9. Aortic valvuloplasty - Wikipedia

    en.wikipedia.org/wiki/Aortic_valvuloplasty

    Guidelines and indications are specific to different patient populations. For adults with aortic stenosis, guidelines suggest that balloon aortic valvuloplasty (BAV) is to be used as a temporary procedure to improve blood flow through the aortic valve to alleviate symptoms and stabilize clinically before having more invasive procedures done, including aortic valve replacement (AVR) or ...

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