Attack on the heart: Hydroxychloroquine cardiotoxicity induced dysrhythmia and cardiomyopathy

Author(s): Tom Hu*, Andrew Hale, Dev Jaiswal

Hydroxychloroquine (HCQ) induced cardiotoxicities are rare but significant complications after prolonged HCQ use with either cardiomyopathy or conduction abnormalities. We present a case of a 70-year-old female with mixed connective tissue disease on long term HCQ use presenting with decompensated heart failure with reduced ejection fraction and symptomatic heart block.