¿El gradiente radial-femoral es un factor de riesgo significativo de disfunción orgánica en pacientes bajo cirugía cardíaca compleja? Estudio observacional

Background: A high radial-femoral gradient has been described in complex cardiac surgery patients, but its association with organ dysfunc - tion has not been studied well. The principal objective of this study was to analyze whether a high gradient is a significant risk factor for organ dysfunction. Methods: Observational and prospective study. We measured the radial-femoral gradient at sternal closure. The sample was divided in 2 groups: Significant gradient (SG) and Without gradient (WG). We use non-parametric analysis. Results: We analyzed data corresponding to 15 patients. The incidence of SG was 73% (11 patients). The anesthetic time was 540 min in SG group vs 438 min in WG, p = 0.04. We found a positive correlation with lactate and SG group, r2 0.8, p = 0.001. Conclusion: The radial-femoral gradient had a high incidence in this high risk population undergoing cardiac complex surgery. There was a positive correlation between significant gradient and lactate, which suggest that a high gradient probably is an indicator of hypoperfusion. We suggest monitoring patients with two artery lines in complex cardiac surgery for early detection of hypoperfusion.