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  • Title: Right Ventricular Early Inflow-Outflow Index-A new method for echocardiographic evaluation of right ventricle dysfunction in acute pulmonary embolism.
    Author: Acar E, İzci S, Inanir M, Yılmaz MF, Izgi IA, Kirma C.
    Journal: Echocardiography; 2020 Feb; 37(2):223-230. PubMed ID: 31955470.
    Abstract:
    INTRODUCTION: Acute pulmonary embolism (APE) is a cardiothoracic thromboembolic emergency at risk of life-threatening. Several risk graduation algorithms may be applied to delineate short-term mortality in patients with APE. In this study, we aim to depict the relationship between the right ventricular early inflow-outflow (RVEIO) index, which is a Doppler-based parameter, and the pulmonary embolism severity index(PESI) in acute pulmonary embolism. METHODS: In the presented study, a total of 160 patients who were diagnosed with APE using pulmonary computed tomography angiography or ventilation/perfusion scintigraphy were comprised. Patients were separated to 2 groups based on the simplified PESI (sPESI): sPESI < 1 (n = 88) and sPESI ≥ 1 (n = 72). Echocardiographic parameters, including the RVEIO index, were measured. RESULTS: There were no significant differences between the groups in age and gender distribution, or the presence of diabetes mellitus, hypertension, smoking, and history of coronary artery disease. There was a positive correlation with the mortality rate and RVEIO index; the mortality was higher in patients with a higher RVEIO index(<0.001). In receiver operating characteristic (ROC) curve analysis using a cutoff level of 14.39, RVEIO index predicted mortality with a sensitivity of 80.4% and specificity of 57.6%(ROC area under curve:0.694; 95%CI, 0.581-0.814; P < .001). RVEIO index was higher in the sPESI ≥ 1(n:72) than in the patients with sPESI < 1(14.27 ± 2.13 vs 10.63 ± 2.09; P < .001). There was a positive correlation between RVEIO index and sPESI score(+0.428; P < .001). CONCLUSION: As well as predicting the degree of tricuspid regurgitation (TR), the RVEIO index is well-correlated with sPESI score and is associated with mortality in patients with APE. This easily measurable parameter may be used to predict short-term mortality in APE patients.
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