Marie Bernadette N'cho-Mottoh, K. Yayehd, C. Iklo, J. Koffi, A. Ekou, R. N'Guetta, Jean Baptiste Anzouan Kacou
{"title":"Ventricular dyssynchrony markers in healthy black African subjects: A tissue doppler imaging study","authors":"Marie Bernadette N'cho-Mottoh, K. Yayehd, C. Iklo, J. Koffi, A. Ekou, R. N'Guetta, Jean Baptiste Anzouan Kacou","doi":"10.5812/acvi.24305","DOIUrl":null,"url":null,"abstract":"Background: Tissue Doppler is a promising method that allows the measurement of time of systolic and diastolic tissue velocities. Ventricular dyssynchrony was assessed in patients with heart failure. In sub-Saharan Africa, very few studies have focused on ventricular dyssynchrony in healthy subjects. Objectives: The purpose of this study was to measure time-to-peak of systolic and diastolic velocities of different segments of left ventricle and apply ventricular dyssynchrony markers to healthy black African subjects. Patients and Methods: Fifty healthy black African were enrolled consecutively over a period of 3 months. Time-to-peak systolic velocities (TS) and Time-to-peak early diastolic velocities (TE) were measured at the four basal segments of left ventricle. Five dyssynchrony markers were assessed: difference between maximal time-to-peak systolic velocity and minimal time-to-peak systolic velocity, time between septal time-to-peak systolic velocity and lateral time-to peak systolic velocity, standard deviation of time-to-peak systolic velocity of the four basal segments, difference between maximal time-to-peak early diastolic velocity and minimal time-to-peak early diastolic velocity, and standard deviation of time-to-peak early diastolic velocity of the four basal segments. Results: The frequency of some dyssynchrony markers was similar to that of other studies. The difference between maximal time-to-peak systolic velocity and minimal time-to-peak systolic velocity was correlated with age and was higher among women. The prevalence of diastolic dyssynchrony was higher in black African subjects. Conclusions: Large-scale studies on the healthy black African population could assess the relationship between diastolic dyssynchrony and changes in myocardial performance related to racial differences.","PeriodicalId":429543,"journal":{"name":"Archives of Cardiovascular Imaging","volume":"39 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2015-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Archives of Cardiovascular Imaging","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5812/acvi.24305","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Background: Tissue Doppler is a promising method that allows the measurement of time of systolic and diastolic tissue velocities. Ventricular dyssynchrony was assessed in patients with heart failure. In sub-Saharan Africa, very few studies have focused on ventricular dyssynchrony in healthy subjects. Objectives: The purpose of this study was to measure time-to-peak of systolic and diastolic velocities of different segments of left ventricle and apply ventricular dyssynchrony markers to healthy black African subjects. Patients and Methods: Fifty healthy black African were enrolled consecutively over a period of 3 months. Time-to-peak systolic velocities (TS) and Time-to-peak early diastolic velocities (TE) were measured at the four basal segments of left ventricle. Five dyssynchrony markers were assessed: difference between maximal time-to-peak systolic velocity and minimal time-to-peak systolic velocity, time between septal time-to-peak systolic velocity and lateral time-to peak systolic velocity, standard deviation of time-to-peak systolic velocity of the four basal segments, difference between maximal time-to-peak early diastolic velocity and minimal time-to-peak early diastolic velocity, and standard deviation of time-to-peak early diastolic velocity of the four basal segments. Results: The frequency of some dyssynchrony markers was similar to that of other studies. The difference between maximal time-to-peak systolic velocity and minimal time-to-peak systolic velocity was correlated with age and was higher among women. The prevalence of diastolic dyssynchrony was higher in black African subjects. Conclusions: Large-scale studies on the healthy black African population could assess the relationship between diastolic dyssynchrony and changes in myocardial performance related to racial differences.