2022年7月1日 · Severe aortic stenosis is often associated with significant LVH & diastolic dysfunction making patients dependent on adequate preload and slower heart rates to allow …

2024年2月3日 · This high outflow resistance causes a large pressure gradient to occur across the aortic valve during ejection, such that the peak systolic pressure within the ventricle is …

2017年10月3日 · The tight aortic valve increases left-sided pressures and can lead to pulmonary congestion. However, patients with AS also have diastolic dysfunction and depend on preload …

2015年6月30日 · Strategies to compensate for the physiological consequences of aortic stenosis Preload. The LV is hypertrophied, and therefore its compliance is poor. A higher preload is …

2023年4月16日 · Aortic stenosis is a common valvular disorder leading to left ventricular outflow obstruction. The anterograde velocity across the valve must be at least 2 m/sec, whereas …

Whereas most patients with acutely decompensated heart failure resulting from a non-valvular source can be liberally treated with preload reducing agents (loop diuretics, nitrates), patients …

2023年12月26日 · Preload, which refers to the amount of blood filling the heart before it contracts, plays a crucial role in influencing the severity and progression of aortic stenosis. …

Patients with aortic stenosis often have ventricular tachycardia during syncopal episodes. It is critical to remember that patients with aortic stenosis are preload dependent and require …

2023年7月13日 · Aortic stenosis is one of the most common forms of valvular heart disease with increasing prevalence with age. Left ventricular outflow tract obstruction (aortic stenosis) can …

2023年2月25日 · Patients with aortic stenosis are preload dependent. Therefore, medications that reduce preload, such as nitrates, diuretics, and vasodilators, should be used with extreme …