Value of systolic time intervals in the diagnosis of heart failure in emergency department patients with undifferentiated dyspnea

• DOI: 10.1111/ijcp.13572
• Publication Date: 2020-06-05T19:49:28Z
• Authors: Imen Trabelsi; Mohamed A. Msolli; Adel Sekma; Nizar Fredj; Zohra Dridi; Nasri Bzeouich; Mohamed F. Najjar; Imen Gannoun; Malek Mzali; Kamel Laouiti; Kaouthar Beltaief; Mohamed H. Grissa; Asma Belguith; Riadh Boukef; Wahid Bouida; Hamdi Boubaker; Semir Nouira
• Keywords: Value (mathematics)

Aim of the study The diagnosis heart failure in emergency department (ED) is challenging. aim this was to evaluate systolic time intervals (STIs) using phonoelectrocardiography for (HF) ED patients with undifferentiated dyspnea. Methods A total 855 dyspnea and suspected HF were prospectively enrolled. They underwent echocardiographic measurements left ventricular ejection fraction (LVEF), B-type natriuretic peptide (BNP) testing computerised assess STIs including electromechanical activation (EMAT), (LVET) EMAT/LVET ratio. Diagnosis accuracy calculated sensitivity, specificity, likelihood ratio receiver operating characteristic (ROC) curve. Results Patients (n = 530) had significantly higher EMAT lower LVET compared non-HF patients. ROC curve c-statistic 0.74, 0.72 0.78 EMAT, respectively. Sensitivity specificity at a cut-off 40% 72% 88% highest correlation LVEF (r 0.48). In intermediate BNP 107), positive increased from 1.8 alone 3.6 combined EMAT/LVET. without values not different those preserved (≥45%). Conclusions Given their immediate availability, STIs' parameters particularly could have an important role approach ED.