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To the editor Hyponatraemia is common in heart failure and is a well known predictor of poor outcome. Recently, Lee H et al 1 determined sodium level in 2935 consecutive patients with acute heart failure prospectively enrolled at four tertiary hospitals in Korea and found 116 cases with persistent hyponatraemia, defined …
Contributors All the authors contributed towards drafting the letter.
Competing interests None declared.
Provenance and peer review Not commissioned; internally peer reviewed.
Data sharing statement No additional data are available.