Open AccessPossibilities of bioimpedance method of investigation of elderly patients with chronic heart failure
Author(s) -
В. В. Кириллова,
Л. А. Соколова,
В. Н. Мещанинов,
V. S. Myakothyh
Publication year - 2021
Publication title -
uralʹskij medicinskij žurnal
Language(s) - English
Resource type - Journals
eISSN - 2949-4389
pISSN - 2071-5943
DOI - 10.52420/2071-5943-2021-20-3-38-43
Subject(s) - heart failure , medicine , extracellular fluid , stage (stratigraphy) , cardiology , body water , extracellular , population , varicose veins , bioelectrical impedance analysis , surgery , body weight , body mass index , chemistry , paleontology , biochemistry , biology , environmental health
. Diagnostics of congestive events in chronic heart failure (CHF) in elderly people is increasingly relevant due to the general aging of the population, which determines the search for new research methods. The aim is to evaluate the diagnostic capabilities of bioimpedance method in determining the severity of congestion in elderly patients with CHF. Materials and methods. 86 elderly patients with CHF of different clinical stages were examined, 36.0% of them were burdened with varicose vein disease of the lower limbs. Total body water content was assessed by active impedance at 50 kHz, extracellular fluid content — at 5 kHz. Results. Active resistance at 50 kHz in patients with CHF II B was 473.92±29.39, with CHF II A - 569.24±58.97, with CHF I — 601.33±24.64 ohms, respectively, at 5 kHz — 555.52±27.44, 633.50±51.32 and 722.50±15.85 ohms respectively. No total and/or extracellular fluid retention was detected in CHF II A without lower limb varicosity, and in 10 (58.8%) patients — in cases of its presence. Retention of total and/or extracellular fluid was detected in 74.4% of CHF stage II B patients, and 48.3% of them had varicose vein disease of the lower limbs. Discussion. Patients with CHF stage II B have the highest amount of total and extracellular fluid in the body compared to patients with CHF stage II A and CHF stage I, but the method is insensitive for diagnosis of fluid retention in the small circle of the circulation and differential diagnosis of the genesis of edema in varicose vein disease of the lower limbs. Conclusion. Bioimpedance imaging can be used for additional diagnostics of CHF in elderly patients in order to estimate the amount of total/extracellular fluid in the body to build personalized treatment and prevention programs.