Term
| Proximal to stenotic valve |
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Definition
| Blood backs up and pressure increases. This is because the backup drives the pressure up and creates a pressure overload pattern (increased afterload). Afterload is the resistance against which the heart must contract. This leads to Hypertrophy |
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Term
| At the level of the stenotic valve |
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Definition
| The stenotic leaflets experience doming during the opening phase and the valvular area decreases within the valve orifice. Doming is caused by pressure pushing on the undersurface of tethered leaflets while they are open. |
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Term
| Distal to the stenotic valve |
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Definition
| The flow turbulent and pressure decreases. The increased velocity and decreased area create turbulent flow. |
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Term
| The decreased flow distal to the stenosis causes pressure to decrease. The increased pressure proximal to the stenosis and the decrease pressure distal to the stenosis generate ____ across the valve while it is open. |
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Definition
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Term
| The maximum PG is acquired via CW Doppler which measures velocity. So, the greater the _____ the greater the ______. |
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Definition
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Term
| Formula for AS is the Continuity Equation |
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Definition
(Velocity 1) (Area1) = (Velocity 2) (Area 2)
LVOT AOV
AVA= (.785)(LVOT diameter)²(V1)PW
(V2)CW |
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Term
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Definition
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