Lower Hospitalization Rates During Fluid Management with Relative Blood Volume Monitoring: A Retrospective Cohort...

Area of Science:

• Nephrology
• Clinical Medicine
• Biomedical Engineering

Background:

• Effective fluid management is crucial for hemodialysis (HD) patient outcomes.
• Relative blood volume monitoring (RBVM) aids in optimizing fluid removal during HD.
• Limited real-world data exists on RBVM's impact on hospitalizations in chronic HD.

Purpose of the Study:

• To evaluate the association between high RBVM utilization and hospitalization rates in chronic HD patients.
• To compare patient outcomes in clinics with high RBVM use versus those without.

Main Methods:

• Retrospective, propensity score-matched observational cohort study.
• Compared 165 high RBVM utilization (HI-RBVM) clinics with 165 non-RBVM (NO-RBVM) clinics.
• Analyzed patient-level data from July to December 2022, focusing on hospitalizations and clinical measurements.

Main Results:

• High RBVM utilization was associated with lower adjusted rates of all-cause hospitalizations (1.57 vs. 1.70 per person-year) and fluid-related hospitalizations (0.30 vs. 0.35 per person-year).
• HI-RBVM clinics showed fewer hospitalization days (119 fewer per 100 patient-years).
• In patients with short dialysis vintage, HI-RBVM was linked to better weight management and more frequent dry weight adjustments.

Conclusions:

• Clinic-level high RBVM utilization correlates with reduced hospitalization rates in hemodialysis patients.
• RBVM may contribute to improved fluid management and patient outcomes.
• Further prospective studies are recommended to establish causality.