Utility of electrical bioimpedance by phase analysis to predict the type of heart failure in patients with COPD

Background: Heart failure (HF) is characterized by water retention. Bioelectrical impedance vector analysis (BIVA) allows the assessment of body composition, the distribution of extracellular corporal water (ECW), third space and total body water (TBW), as well as, through impedance index (II), know the location of this accumulation within the body, and of these, if it is in thorax (IIT) and / or abdomen (IIA). Objective: To evaluate if these segmental index are associated with the type of HF in patients with COPD Methods: Prospective cohort pilot study that included outpatients over 40 years of age, with diagnosis of HF and EPOC (FEV1 / FVC Results: Patients with BM (n = 6) had less height (147.3 ± 12.3, 166.3 ± 7.2, 160 ± 12.4 p = 0.000) and Strength (15.86 ± 9.35, 26.19 ± 8, 23.6 ± 12. 7, p = 0.031), but higher frequency of OSAS (%) 62.5, 28, 0, p = 0.017. As well as higher IIT (0.93 ±.02, 0.86 ± 0.05, 0.83 ± 0.05, p = 0.014) and IIA (0.91 ± 0.03, 0.83 ± 0.08, 0.78 ± 0.13, p = 0.083), for BM, T and mixed, respectively. Patients with left or mixed HF (left + right) had higher II: (0.85 ± 0.03 p = 0.001), IIT (0.85 ± 0.05, p = 0.031), IIT (0.87 ± 0.07, p = 0.078); IIA (0.87 ± 0.08, p = 0.017) Conclusion: The use of BIVA helps to predict which type of HF predominates, IIT for left and mixed HF or right is the one that predominates in IIA. A larger sample is required for definitive conclusions.