弁膜症　計算式

AS(大動脈弁狭窄症)

$$E_{L}Co^{2} = \frac{1}{EOA}-\frac{1}{A_{A}} \\ k = \frac{ρ}{2 \cdot E_{L}Co^{2}} \\ kI_{asp}^{2} +R_{asp}I_{asp}-(P_{LV}-\frac{Q_{asp}}{C_{asp}})=0 より\\ I_{asp}= \frac{(-R_{asp} + \sqrt{R_{asp}^{2} + 4k(P_{LV}-\frac{Q_{asp}}{C_{asp}})})}{2k}$$

AR(大動脈弁逆流)

$$E_{L}Co^{2} = \frac{1}{EOA}-\frac{1}{A_{A}} \\ k = \frac{ρ}{2 \cdot E_{L}Co^{2}} \\ kI_{asp}^{2} +R_{asp}I_{asp}-(P_{LV}-\frac{Q_{asp}}{C_{asp}})=0 より\\ I_{asp}= \frac{(-R_{asp} - \sqrt{R_{asp}^{2} - 4k(P_{LV}-\frac{Q_{asp}}{C_{asp}})})}{2k}$$