CARDIORENAL INTERACTION IN DECOMPENSATED CHRONIC HEART FAILURE

Aim. To investigate the prevalence of cardiorenal interactions, predictors of development, variants of clinical course, and outcomes of acute kidney injury (AKI) in patients with acute decompensation of chronic heart failure (ADCHF).
Material and methods. Patients (n=278) with clinical manifestations of ADCHF were included into the study. All patients underwent clinical, laboratory and instrumental investigation. Renal function was assessed using the CKD-EPI formula to calculate glomerular filtration rate (GFR). Hydration was assessed using the bioimpedance analyzer ABC-01 "Medass" (Russia). Chronic kidney disease (CKD) and AKI were diagnosed according to the criteria of the latest Russian and international guidelines. Six phenotypes of AKI were identified: outpatient and hospital acquired, transient and persistent, de novo, and on the background of CKD.
Results. CKD was detected in 125 (45%) patients. AKI developed in 121 (43.5%) patients, and in 52.9% of cases was nosocomial, in 53.7% transient and in 52.1% of cases occurred in patients without history of CKD. The risk of in-hospital mortality compared with patients without AKI significantly increased only in patients with nosocomial AKI (14.1 and 3.8%, p<0.05), AKI de novo (14.3 and 3.85%, p <0.05) and persistent (25 and 3.8%, p<0.001). Patients with these variants of AKI as compared to patients without AKI had more pronounced hydration, as well as less frequent prescription of loop diuretics and beta-blockers during outpatient treatment.
Conclusion. The high rate (67.6%) of cardiorenal interactions was found out in patients admitted to hospital with ADCHF. Unfavorable prognostic phenotypes of AKI were hospital acquired, persistent AKI and AKI de novo. Patients with these phenotypes had a more pronounced hydration and inadequate outpatient therapy.

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