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      Accuracy of tissue Doppler echocardiography in the emergency diagnosis of decompensated heart failure with preserved left ventricular systolic function: comparison with B-type natriuretic peptide measurement.

      Echocardiography (Mount Kisco, N.y.)

      Acute Disease, Aged, Critical Care, methods, Dyspnea, blood, diagnosis, etiology, ultrasonography, Echocardiography, Doppler, Female, Heart Failure, complications, Humans, Male, Natriuretic Peptide, Brain, Prognosis, Reproducibility of Results, Sensitivity and Specificity, Ventricular Dysfunction, Left

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          Abstract

          Tissue Doppler echocardiography provides a reliable noninvasive estimation of left ventricular (LV) filling pressures irrespective of LV ejection fraction. However, the diagnostic accuracy of E/Ea ratio has not been adequately determined in patients with suspected heart failure (HF) with preserved LV systolic function in the acute care setting. To investigate the accuracy of E/Ea ratio in the emergency diagnosis of decompensated HF with preserved LV systolic function. Seventy patients with a LV ejection fraction >or=45%, 32 with decompensated HF (77 +/- 12 years of age), and 38 with noncardiac cause of acute dyspnea (74 +/- 12) were enrolled. B-type natriuretic peptide (BNP) was measured on admission; lateral, septal and average E/Ea ratios were calculated within 24 hours. Using receiver-operating characteristic curves to evaluate diagnostic performance, BNP (AUC of 0.875, P < 0.0001) and E/Ea ratios (AUC of 0.90-0.92, P < 0.0001) provided similar accuracy for predicting decompensated HF. Optimal cutoffs were 146 pg/ml for BNP (sensitivity and specificity of 90.6% and 76.3%), 9.8 for lateral E/Ea (83.3% and 88.9%), 12.7 for septal E/Ea (76.7% and 91.4%), and 11.5 for average E/Ea ratio (80% and 94.3%). On multivariate logistic regression analysis, average E/Ea ratio yielded independent additional information to a model based on the clinical judgment and BNP level according to the standard cutoff of 100 pg/ml. Tissue Doppler echocardiography is accurate for predicting decompensated HF with preserved LV systolic function and may be used as a diagnostic complement to inconclusive BNP level in this setting.

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          Journal
          16174119
          10.1111/j.1540-8175.2005.40076.x

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