Intra-Dialytic Hypotension and the VExUS Assessment in Hospitalized Patients: A Prospective Cohort Study

INTRODUCTION: Predicting tolerance to fluid removal is particularly challenging in hospitalized, acutely ill patients. This study evaluated the association between the Venous Excess Ultrasound (VExUS) and IDHE in hospitalized patients. METHODS: This single-center prospective cohort included hospitalized between 2022 and 2024 receiving hemodialysis. Ultrasound of the inferior vena cava (IVC), hepatic, portal, and femoral veins was performed. Patients were classified into four VExUS grades (0 to 3) based on IVC dimensions and venous Doppler waveforms. Follow-up at 3 months was conducted to evaluate outcomes across the different groups. RESULTS: The cohort consisted of 93 patients. VExUS grading showed grade 0 in 52 patients (55.9%), grade 1 in 22 patients (23.7%), grade 2 in 11 patients (11.8%), and grade 3 in 8 patients (8.6%). The incidence of IDHE was tended to be higher in VExUS grade 0 (40.4%) and VExUS grade 3 (50.0%) patients compared with VExUS grade 1 (18.2%) or 2 (18.2%) (p = 0.145). The cumulative duration of hypotension (sBP