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  • Title: Prognostic value of red cell distribution width and echocardiographic parameters in patients with pulmonary embolism.
    Author: Pehlivanlar Küçük M, Öztuna F, Abul Y, Özsu S, Kutlu M, Özlü T.
    Journal: Adv Respir Med; 2019; 87(2):69-76. PubMed ID: 31038716.
    Abstract:
    INTRODUCTION: Pulmonary embolism (PTE) is a common cardiovascular emergency. We aimed to predict mortality in the acute phase and to assess the development of pulmonary hypertension in the chronic period with the combined use of red cell distribution width (RDW) and echocardiography (ECHO) for the prognosis of PTE. MATERIAL AND METHODS: Cases diagnosed with acute PTE were prospectively monitored in our clinic. The initial data of 56 patients were evaluated. The subjects were separated into two groups basing on RDW; group 1 had RDW ≥ 15.2%, while group 2 had RDW < 15.2%. RESULTS: Ninety-eight patients were enrolled in the study. We established the sensitivity (73.3%) and the specificity (73.2%) of RDW to determine mortality in the cases with PTE. RDW ≥ 15.2% value was significant as an independent risk factor for predicting mortality (OR:7.9 95% CI, 1.5-40.9 p = 0.013) in acute PTE. The mean tricuspid annular plane systolic excursion (TAPSE) value was significantly different between the group-1 (RDW ≥ 15.2%, 2.20 cm (± 0.43)) and group-2 (RDW < 15.2%, 1.85 cm (± 0.53))(p = 0.007). The threshold value for tricuspid jet velocity was > 2.35m/s, the sensitivity and specificity were 76.9% and 61.9%, respectively for predicting mortality (AUC: 0.724, 95% CI: 0.591-0.858, p = 0.033). CONCLUSION: Our results indicate that high RDW levels are an independent predictor of mortality in acute PTE. Lower TAPSE levels show right heart failure in PTE patients; this may also be indicative of right ventricular systolic function. We believe that developing new scoring systems, including parameters such as RDW, TAPSE, and tricuspid jet velocities, may be effective in determining the prognosis of pulmonary embolism.
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