In the present study, both overt and subclinical hypothyroidism had independently associated with all‐cause mortality in HF at univariate as well as multivariate analysis, which was in line with a previous study enrolled acute HF with similar baseline characteristics,16 and this finding was consistent with the recommendations by European Society of Cardiology (ESC) to monitor thyroid hormone levels17 and to initiate treatment early in case of overt hypothyroidism. Here, TG is linked to hydrops fetalis.