RT Journal Article T1 Primary vs. Secondary Heart Failure Diagnosis: Differences in Clinical Outcomes, Healthcare Resource Utilization and Cost A1 Bueno Zamora, Héctor José A1 Goñi, Clara A1 Salguero Bodes, Rafael A1 Palacios, Beatriz A1 Vicent, Lourdes A1 Moreno Muñoz, Guillermo A1 Rosillo, Nicolás A1 Varela, Luis A1 Capel, Margarita A1 Delgado Jiménez, Juan Francisco A1 Arribas Ynsaurriaga, Fernando A1 del Oro, Manuel A1 Ortega, Carmen A1 Bernal, Jose Luis AB Background: There is scarce information on patients with secondary heart failure diagnosis (sHF). We aimed to compare the characteristics, burden, and outcomes of sHF with those with primary HF diagnosis (pHF).Methods: Retrospective, observational study on patients ≥18 years with emergency department (ED) visits during 2018 with pHF and sHF in ED or hospital (ICD-10-CM) diagnostic codes. Baseline characteristics, 30-day and 1-year mortality, readmission and re-ED visit rates, and costs were compared between sHF and pHF.Results: Out of the 797 patients discharged home from the ED, 45.5% had sHF, and these presented lower 1-year hospitalization, re-ED visit rates, and costs. In contrast, out of the 2,286 hospitalized patients, 55% had sHF and 45% pHF. Hospitalized sHF patients had significantly (p < 0.01) greater comorbidity, lower use of recommended HF therapies, longer length of stay (10.8 ± 10.1 vs. 9.7 ± 7.9 days), and higher in-hospital and 1-year mortality (32 vs. 25.8%) with no significant differences in readmission rates and lower 1-year re-ED visit rate. Hospitalized sHF patients had higher total costs (€12,262,422 vs. €9,144,952, p < 0.001), mean cost per patient-year (€9,755 ± 13,395 vs. €8,887 ± 12,059), and average daily cost per patient.Conclusion: Hospitalized sHF patients have a worse initial prognosis, greater use of healthcare resources, and higher costs. PB Frontiers YR 2022 FD 2022-03-17 LK https://hdl.handle.net/20.500.14352/108761 UL https://hdl.handle.net/20.500.14352/108761 LA eng NO Bueno H, Goñi C, Salguero-Bodes R, Palacios B, Vicent L, Moreno G, Rosillo N, Varela L, Capel M, Delgado J, Arribas F, del Oro M, Ortega C and Bernal JL (2022) Primary vs. Secondary Heart Failure Diagnosis: Differences in Clinical Outcomes, Healthcare Resource Utilization and Cost. Front. Cardiovasc. Med. 9:818525. doi: 10.3389/fcvm.2022.818525 NO CM20/00104FPU18/03606 NO AstraZeneca Spain NO Instituto de Salud Carlos III NO España. Ministerio de Educación DS Docta Complutense RD 8 jun 2025