Decreased EF from AF: Entreaties usually increases ejection fraction. In this instance, the most likely cause is the onset of atrial fibrillation causing a rapid and irregular heart rhythm. An additional factor is the loss of effective contraction of the upper chambers(atria) due to atrial fibrillation.
Answered 1/11/2021
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Low EF: Uncontrolled atrial fibrillation lowers left ventricular EF even further. Even with controlled a fib, the loss of atrial function causes a loss of EF by 12%. Entresto should help increase EF by its action of vasodilation which takes strain off the left ventricle.
Answered 1/16/2021
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