Hemodialysis Patients Have Signs of a Chronic Thrombotic Burden

Overview

Journal BMC Nephrol

Publisher Biomed Central

Specialty Nephrology

Date 2024 Jul 12

PMID 38997655

Authors

Bernd G Stegmayr

Lennart D Lundberg

Affiliations

Soon will be listed here.

Abstract

Background: Cardiovascular diseases are the dominant cause of morbidity in hemodialysis (HD) patients. Unless sufficient anticoagulation is used during HD, clotting may appear. The objective was to investigate if levels of fibrin degradation products (D-dimer) were increased before and during HD.

Methods: The combined observational study included 20 patients performing a total of 60 hemodialysis divided into three sessions of low-flux dialysis. None of the patients suffered from any clinically evident thromboembolic event before or during the study. Median bolus anticoagulation (mainly tinzaparin) doses were 84 Units/kg bow. Blood samples were drawn before HD (predialysis), and at 30min and 180min during HD with focus on analyzing D-dimer levels and its relation to interdialytic weight gain (IDWG) and speed of fluid elimination by HD (UF-rate).

Results: Predialysis, D-dimer levels (mean 0.767 ±0.821, min 0.136mg/L) were above the upper reference value in 95% of the sessions. D-dimer levels were lowered at 30min (p<0.001) and returned to predialysis levels at 180min. Predialysis D-dimer correlated with NT-pro-BNP, Troponin T, IDWG and UF-rate. Multiple regression analysis revealed that the D-dimer levels were significantly related to IDWG and the UF-rate.

Conclusions: D-dimer levels were elevated in a high proportion predialysis and during HD and related to the IDWG and the UF-rate. Awareness of D-dimer levels and future studies will help clarify if optimization of those variables, besides anticoagulation and biocompatibility measures, will eradicate the repeated subclinical thromboembolic events related to each HD; one reason that may explain organ damage and shortened life span of these patients.

Citing Articles

The Emboless® venous chamber efficiently reduces air bubbles: a randomized study of chronic hemodialysis patients.

Forsberg U, Jonsson P, Stegmayr B Clin Kidney J. 2024; 17(11):sfae323.

PMID: 39574541 PMC: 11579606. DOI: 10.1093/ckj/sfae323.

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