Prevalence and prognostic implication of left ventricular hypertrophy defined by different echocardiographic criteria

Abstract Objective Echocardiographic criteria of left ventricular hypertrophy (LVH) recommended in the international guidelines are derived from Caucasian population, which could be less accurate in estimating the LVH burden in other ethnic groups. LVH is a well-known prognostic factor and assessing the LVH burden based on ethnic-specific criteria have important implications. To evaluate the prevalence and prognostic implications of LVH in general Chinese population according to the criteria of the Echocardiographic Measurements in Normal Chinese Adults (EMINCA) study and the international guidelines. Methods Nationally representative populations aged ≥ 35 years (n=20210, mean age 56.0 years, women 53.3%) were enrolled from the China Hypertension Survey. LVH criteria of the EMINCA study was left ventricular mass index (LVMI) > 109 g/m2 for men and > 105 g/m2 for women; and the international guidelines was LVMI > 115 g/m2 for men and > 95 g/m2 for women. Results The prevalence of LVH defined by the EMINCA study and international guidelines was 8.3% (≈ 56.8 million) and 11.7% (≈ 80.1 million) respectively. LVH defined by the EMINCA study was associated with adjusted hazard ratio (HR) of 1.58 (95% CI 1.18-2.12; P-value=0.002) for cardiovascular death and 1.21 (95% CI 0.98-1.49; P-value=0.07) for all-cause death; while defined by the international guidelines, LVH was associated with adjusted HR of 1.33 (95% CI 0.98-1.80; P-value=0.07) for CV death and 1.22 (95% CI 1.00-1.50; P-value=0.054) for all-cause death. Conclusions Prevalence and prognostic implications of LVH in general Chinese population differ by different echocardiographic criteria, supporting the application of ethnic-specific criteria.Cumulative rate of outcomes at follow-upLVH and CV death and all-cause death