Risk of supranormal left ventricular ejection fraction in patients with aortic stenosis.

Background: Cardiovascular events are increasing in patients with supranormal left ventricular ejection fraction (snLVEF). However, the effect of snLVEF in patients with aortic stenosis (AS) remains unclear, especially in patients with moderate AS.

Hypothesis: This study aimed to evaluate the prognosis of mortality and heart failure (HF) in patients with LVEF ≥ 50% and moderate or severe AS.

Investigation of effective invasive blood pressure control methods to prevent acute exacerbation of acute aortic dissection.

Background: Acute aortic dissection is associated with high mortality and increased risk of complications. Acute exacerbations have a relatively high frequency; however, the contributing factors are unclear. Blood pressure (BP) and heart rate control are important factors, but the ideal BP control strategy to prevent acute exacerbations under invasive arterial pressure monitoring remains unclear.