Impact of left ventricular concentricity on long-term mortality in a hospital-based population in Japan

BackgroundThe prognostic impact of relative wall thickness (RWT), ventricular concentricity, is controversial.MethodsWe retrospectively analyzed data obtained from 4444 consecutive patients who had undergone both transthoracic echocardiography and electrocardiography at our hospital in 2013. Those who presented with a history of previous episodes of myocardial infarctions and severe or moderate valvular disease were excluded from the analysis. We calculated RWT as follows: (2 x diastolic posterior wall thickness) / (the diastolic LV dimension). We defined high RWT as a ratio > 0.42. A total of 3654 patients were categorized into two groups: 492 with high RWT, and 3162 with normal RWT.ResultsThe mean ages of those in the normal and high RWT groups were 64.6 (±standard deviation 16.3) and 71.6 (± 12.7) years, respectively (pConclusionHigh RWT has a deleterious impact on long-term mortality.