• Lluís Llauger, Javier Jacob, Luis Arturo Moreno, Alfons Aguirre, Enrique Martín-Mojarro, Juan Carlos Romero-Carrete, Gemma Martínez-Nadal, Josep Tost, Gerard Corominas-Lasalle, Àlex Roset, Carlos Cardozo, Guillem Suñén-Cuquerella, Brigitte Alarcón, Sergio Herrera-Mateo, José Carlos Ruibal, Aitor Alquézar-Arbé, Víctor Gil, Ruxandra Donea, Marta Berenguer, Pere Llorens, Bernat Villanueva-Cutillas, Francisco Javier Martín-Sánchez, Pablo Herrero, and Òscar Miró.
• Servicio de Urgencias, Hospital Universitari de Vic, Barcelona, España.
• Emergencias. 2020 Sep 1; 32 (5): 332-339.

ObjectivesTo identify factors associated with worsening renal function (WRF) and explore associations with higher mortality in patients with acute heart failure (AHF).Material And MethodsSeven emergency departments (EDs) in the EAHFE-EFRICA study (Spanish acronym for Epidemiology of AHF in EDs - WRF in AHF) consecutively included patients with AHF and creatinine levels determined in the ED and between 24 and 48 hours later. Patients with WRF were identified by an increase in creatinine level of 0.3 mg/dL or more. Forty-seven clinical characteristics were explored to identify those associated with WRF. To analyze for 30-day all-cause mortality we calculated odds ratios (ORs). To analyze mortality at the end of follow-up and by trimester, adjusted for between-group differences, we calculated hazard ratios (HRs). The data were analyzed by subgroups according to age, sex, baseline creatinine levels, AHF type, and risk group.ResultsA total of 1627 patients were included. The subgroup of 220 (13.5%) with WRF were older, had higher systolic blood pressure, were more often treated with morphine, and had chronic renal failure; there was also a higher rate of hypertensive crisis as the trigger for AHF in patients with WRF. However, only chronic renal failure was independently associated with WRF (adjusted OR, 1.695; 95% CI, 1.264-2.273). The rate of 30-day mortality was 13.1% overall but higher in patients with WRF (20.9% vs 11.8% in patients without WRF; adjusted OR, 1.793; 95% CI, 1.207-2.664). Accumulated mortality at 18 months (average follow-up time, 14 mo/patient) was 40.0% overall but higher in patients with WRF (adjusted HR, 1.275; 95% CI, 1.018-1.598). Increased risk was greater in the first trimester. Subgroup analyses revealed no differences.ConclusionAHF with WRF in the first 48 hours after ED care is associated with higher mortality, especially in the first trimester after the emergency.

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