Left ventricular mass, geometric patterns, and diastolic myocardial performance in children with chronic kidney disease

Abstract

Background: Excessive left ventricular mass (LVM) and diastolic dysfunction are associated with higher morbidity and mortality among patients with chronic kidney disease (CKD). Objective: The objective of the following study is to determine the prevalence of increased LVM index (LVMI), pattern of abnormal LV geometry, and diastolic dysfunction in Nigerian CKD children and to establish a relationship of these with estimated glomerular filtration rate (eGFR). Subjects and Methods: Cross-sectional comparative study of LV structure and diastolic function of 21 children with CKD age- and sex-matched and controls asymptomatic for cardiac disease. Results: The median LVMI was 62.19 (34.7) g/m2 in CKD patients compared with 52.89 (30.2) g/m2 in controls (P = 0.04). Excessive LVMI was present in 3 (14.3%) individuals compared with none (0%) of the controls P < 0.001. The prediction equation for LVMI using eGFR is: LVMI = 123.11+ (−0.48) × eGFR ml/m2/min. Abnormal LV geometry was present in 19.05% of the CKD patients and none of the controls (P = 0.04). CKD stages differed significantly with respect to the presence of abnormality with LV geometry (P = 0.04). LV diastolic dysfunction was present in 4 (19.1%) individuals (2 each had impaired relaxation and restrictive patterns) compared with 1 (4.8%) control (restrictive pattern)-P < 0.001. Children with CKD who had abnormal LV geometry had 48 times increase in the odds of having LV diastolic dysfunction when compared with those having normal LV geometry (confidence interval = 2.31–997.18, P = 0.012). Conclusion: Excessive LVM, LV hypertrophy and diastolic dysfunction are significantly more common in children with CKD compared with controls.