• C Josa-Laorden, I Giménez-López, J Rubio-Gracia, F Ruiz-Laiglesia, V Garcés-Horna, and J I Pérez-Calvo.
• Servicio de Medicina Interna, Hospital Clínico Universitario Lozano Blesa, Zaragoza, España; Instituto de Investigación Sanitaria de Aragón (IIS Aragón), Zaragoza, España. Electronic address: claudiajosa@gmail.com.
• Rev Clin Esp (Barc). 2016 May 1; 216 (4): 183-90.

ObjectivesTo assess the utility of measuring the diameter and collapse of the inferior vena cava (IVC) in acute heart failure (AHF), its relationship with the prognosis and serum biomarkers of congestion.Patients And MethodsAn observational prospective study was conducted that included 85 patients with AHF, classifying them into 4 groups according to IVC diameter (≤ or >20mm) and inspiratory collapse (< or ≥50%) at admission. The endpoints were mortality due to HF and the combined event of mortality and readmission for HF at 180 days.ResultsSome 24.7% of the patients had an undilated IVC and ≥50% collapse (group 1); 20% had an undilated IVC and <50% collapse (group 2), 5.9% had a dilated IVC and ≥50% collapse (group 3); and 49.4% had a dilated IVC and <50% collapse (group 4). The lack of inspiratory collapse but not IVC dilation was related to higher concentrations of urea (P=.007), creatinine (P=.004), uric acid (P=.008), NT-proBNP (P=.009) and CA125 (P=.005). Survival free of the combined event at 180 days was lower in those patients with no IVC collapse.ConclusionsDilation and the absence of the inspiratory collapse of the IVC are common in the context of AHF. The lack of inspiratory collapse of the IVC during the decompensation phase identifies a subgroup of patients with poorer prognosis at 6 months.Copyright © 2015 Elsevier España, S.L.U. y Sociedad Española de Medicina Interna (SEMI). All rights reserved.

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