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

Shih Hung Hsiao, Kuan Rau Chiou

研究成果: 雜誌貢獻文章同行評審

23 引文 斯高帕斯(Scopus)


Aims Thepower of left atrial (LA) parameters for predicting adverse events in relatively low-risk groups is not fully understood. This study investigated whether theLAexpansion index predicts heart failure (HF) and all-cause mortality in subjects with dyspnoea. Methods and results Echocardiography was performed to identify causes of dypnoea in 1735 patients. The LA expansion index was calculated as (Vol - Vol) × 100%/Vol, where Vol was defined as the maximal LA volume and Volsub was defined as the minimal LAvolume. The endpoints were 2-year frequencies of HF hospitalization and all-cause mortality. Over a median follow-up of 2.7 years, 91 participants reached endpoints. Rates of adverse events were exponentially proportional to the LA expansion index. For predicting adverse events, the LA expansion index was better than the maximal indexed LA volume and tissue Doppler parameters. Hospitalization for HF was independently associated with age, LVEF, pulmonary artery systolic pressure, LA expansion index, and history of prior HF. All-cause mortality was associated with age, pulmonary artery systolic pressure, and LA expansion index. Compared with the highest quartile of the LA expansion index, the lowest quartile had a 3.1-fold higher hazard of HF events and a 17.8-fold higher hazard of all-cause mortality. Conclusions The LA expansion index predicts adverse events in patients with dyspnoea. The prognostic power of the index exceeds that of other well-established echocardiographic parameters such as E/e' and maximal indexed LA volume.
頁(從 - 到)1245-1252
期刊European Journal of Heart Failure
出版狀態已發佈 - 12月 16 2013

ASJC Scopus subject areas

  • 心臟病學與心血管醫學


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