NPPB and hydrops fetalis: We aimed to evaluate the risk of all-cause mortality, hospital readmissions and change in BNP, sodium and perceived thirst in HF patients with FR vs liberal fluid intake.<h4>Methods</h4>We performed a systematic literature search on PubMed, Embase, and Clinicaltrials.gov for relevant randomized controlled trials (RCTs) from inception until June, 2025.