Fluid management remains a major challenge in peritoneal dialysis (PD), particularly due to the difficulty in detecting subclinical hypervolemia. This cross-sectional, single-center study, with a sample of 22 patients, investigated the utility of lung ultrasound (LUS) as a complementary tool for volume status assessment. Using an 8-zone scanning protocol and B-line scoring system, LUS was performed during routine visits alongside inferior vena cava (IVC) evaluation and bioimpedance analysis (BIA). The results showed strong correlations between B-line scores and both overhydration, as measured by BIA (r = 0.625), and IVC collapsibility index (r = –0.722). Notably, half of the patients considered clinically euvolemic exhibited signs of hypervolemia based on ultrasonographic criteria. These findings suggest that LUS is a noninvasive, practical, and effective method for identifying fluid overload not evident through standard clinical evaluation, supporting its integration into routine care for PD patients.
Dias et al. (Sun,) studied this question.