Assessment of left ventricular longitudinal function in hypertensive patients without left ventricular hypertrophy by mitral annular plane systolic excursion

Background: Hypertension is an important risk factor for many cardiovascular diseases worldwide. Assessment of left ventricular (LV) systolic function has a major diagnostic and prognostic importance in patients with hypertension. The use of mitral annular plane systolic excursion in the assessment of LV systolic dysfunction is helpful especially in cases of poor imaging quality, “since good imaging quality is needed for the modern echocardiographic techniques. Objectives: Detection of early subclinical LV longitudinal systolic dysfunction in hypertensive patients without LV hypertrophy (LVH) with preserved ejection fraction by mitral annular plane systolic excursion. Patients and Methods: A comparative case-control study which took place at Al-Yarmouk Teaching Hospital in Baghdad/Iraq from October 2018 to October 2019. The study population consisted of 60 patients without LVH and 60 healthy subjects considered as controls. Echocardiographic parameters for left ventricular systolic assessments were done for all subjects. Results: Mean peak annular systolic velocity was significantly lower in hypertensive patients without LVH compared to controls (P = 0.034). There was no significant difference between hypertensive patients without LVH and controls regarding mitral annular plane systolic excursion (P = 0.4). There was positive linear correlation between mitral annular plane systolic excursion and peak annular systolic velocity for hypertensive patients without LVH (r = 0.535, P = 0.015). Conclusion: Although there was a significant linear correlation between mitral annular plane systolic excursion and peak systolic velocity and both are considered as a surrogate for LV longitudinal systolic function, mitral annular plane systolic excursion cannot be used for assessment of LV longitudinal systolic function in patients with hypertension without LVH.