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American Journal of Hypertension
Article . 2015 . Peer-reviewed
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Left Ventricular Systolic Dysfunction in Asymptomatic Black Hypertensive Subjects

Authors: Ojji, Dike; Atherton, John; Sliwa, Karen; Alfa, Jacob; Ngabea, Murtala; Opie, Lionel;

Left Ventricular Systolic Dysfunction in Asymptomatic Black Hypertensive Subjects

Abstract

BACKGROUND Hypertension has been established as one of the commonest causes of heart failure especially in sub-Saharan Africa. We have previously observed a high prevalence of left ventricular (LV) systolic dysfunction in hypertensive heart failure patients in Nigeria despite a low prevalence of ischemic heart disease. The present study was, therefore, undertaken to assess the prevalence of asymptomatic LV systolic dysfunction in hypertensive black African subjects with no history of heart failure. METHODS One thousand nine hundred forty-seven hypertensive subjects without heart failure presenting to the Cardiology Unit, Department of Medicine, University of Abuja Teaching Hospital, Nigeria, from April 2006 to August 2013 had clinical and echocardiographic evaluation. RESULTS Nine hundred fifty-three (48.9%) were males and 994 (51.1%) were females. One thousand eight hundred seventeen (93.3%) had normal LV systolic function (LV ejection fraction (LVEF) ≥ 54%), 68 (3.5%) had mild LV systolic dysfunction (LVEF 45–54%), 43 (2.3%) had moderate LV systolic dysfunction (LVEF 30–44%), and 16 (0.9%) had severe LV systolic dysfunction (LVEF < 30%). Male subjects had worse LV systolic function compared to women (mean LVEF 73.2% vs. 75.6%, P value < 0.0001) and diabetic subjects had worse LV systolic function compared to nondiabetic subjects (LVEF 72.3% vs. 75.7%, P = 0.02). In multivariate regression analysis, lower LVEF as a continuous variable was associated with older age, male sex, diabetes mellitus, LV mass indexed for body surface area, diastolic blood pressure, posterior wall thickness in diastole, left atrial diameter, and LV internal diameter in diastole. CONCLUSIONS In a cohort of asymptomatic Black hypertensive subjects, 6.7% had LV systolic dysfunction, which was associated with male gender, diabetes mellitus, and larger LV mass.

Country
Australia
Keywords

Adult, Male, Systolic dysfunction, Black People, Nigeria, Blood Pressure, Comorbidity, Severity of Illness Index, Hospitals, University, Risk Factors, Left ventricular, Diabetes Mellitus, Prevalence, Humans, Prospective Studies, Aged, Middle Aged, 2724 Internal Medicine, Asymptomatic Diseases, Hypertension, Multivariate Analysis, Blood pressure, Linear Models, Female

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
5
Average
Average
Average
bronze