Left atrial expansion index predicts all-cause mortality and heart failure admissions in dyspnoea.

摘要: Aims The power of left atrial (LA) parameters for predicting adverse events in relatively low-risk groups is not fully understood. This study investigated whether the LA expansion index predicts heart failure (HF) and all-cause mortality subjects with dyspnoea. Methods results Echocardiography was performed to identify causes dypnoea 1735 patients. The calculated as (Volmax – Volmin) × 100%/Volmin, where Volmax defined maximal volume Volmin minimal volume. endpoints were 2-year frequencies HF hospitalization mortality. Over a median follow-up 2.7 years, 91 participants reached endpoints. Rates exponentially proportional index. For events, better than indexed tissue Doppler parameters. Hospitalization independently associated age, LVEF, pulmonary artery systolic pressure, index, history prior HF. All-cause Compared highest quartile lowest had 3.1-fold higher hazard 17.8-fold mortality. Conclusions The patients dyspnoea. prognostic exceeds that other well-established echocardiographic such E/e' volume. Trial registration NCT01171040.