New Insight in the Assessment of Left Ventricular Function in Paradoxical Low Flow Aortic Stenosis Patients with Normal Left Ventricular Ejection Fraction: A Mini-Review

• 作者: Amena Elsaady Enrico Mangieri Galaleldin Nagib Elkilany Jaipaul Singh Jan Fedacko Madian Abdelrahman Mohamed Khorshid Mohammed Elmahal Petras Lohana Ram B. Singh Sherif Baath Allah
• 来源期刊: 心血管外科国际期刊(英文)
• 学科: 医学
• 关键词: Aortic Stenosis LVEF Aortic Valve Myocardial Function Global Longitudinal Stain ECHOCARDIOGRAPHY
• 年，卷（期）: 2020,（12）
• 页码范围: 264-270
• 页数: 7页
• 分类号: R54

摘要

Paradoxical valvular aortic stenosis (VAS) is a challenging area of clinical cardiology for the practitioners. It involves a small aortic valve area, low flow rate and mean pressure gradient although there is normal left ventricular ejection fraction. The aim of this study was to assess left ventricular (LV) dysfunction in a symptomatic severe aortic valve stenosis which is of crucial importance in identifying patients at risk of heart failure, postoperative complications and increased mortality. There are new insights which are involved in assessment of LV myocardial function including global longitudinal strain (GLS) by two-dimensional speckle tracking echocardiography (2D STE), myocardial performance index (MPI) and maximum rate of LV pressure rise (+dP/dt) during isovolumetric contraction time of the LV. This information can provide both diagnostic and prognostic information in addition to standard echocardiographic and clinical parameters. However, a profound understanding of the complex interaction between loading conditions, chamber geometry and contractility is necessary for the correct interpretation of myocardial deformation in order to draw appropriate conclusions in patients with aortic valve disease. This mini review is related to new and novel insights into the assessment of left ventricular function (LVF) in paradoxical low flow aortic stenosis patients with normal left ventricular ejection fraction (LVEF).