SELENOP-deficiency (<3.23 mg/L) predicted AKI hospitalization (HR 4.02; <i>p</i> = 0.035).<h4>Conclusions</h4>Low SELENOP is associated with SGHS and increased risk of kidney disease hospitalization, especially AKI, suggesting Se status may influence HF and renal outcomes. Here, SELENOP is linked to hydrops fetalis.