Clinical phenotypes and prognosis of thyrotoxic heart failure and cardiomyopathy in patients hospitalized for acute heart failure.

Thyrotoxic HF was uncommon among patients hospitalized for acute HF. However, after definitive therapy, these patients had a more favourable prognosis than those hospitalized for acute HF without thyrotoxic HF. Clinical phenotypes of thyrotoxic HF include small BSA, middle-aged female, HF-pEF, and right-sided HF. Thyrotoxic cardiomyopathy affected over half of the patients with thyrotoxic HF with a two-third recovery rate.