• Jin Lin Tan, Augustine Nyasha Mugwagwa, Luke Cieslik, and Rohit Joshi.
• Division of Medicine, Lyell McEwin Hospital, Elizabeth Vale, South Australia, Australia.
• BMJ Case Rep. 2019 Jul 11; 12 (7).

AbstractWe report a case of a 74-year-old man who developed myocarditis complicated by atrioventricular (AV) block following two doses of nivolumab for the treatment of non-small cell lung cancer. A diagnosis of drug-induced acute myocarditis with complete AV block was considered on the basis of elevated troponin, new onset left ventricular (LV) systolic dysfunction, absence of acute myocardial infarction and some findings suggestive of myocarditis on cardiac magnetic resonance. The patient was commenced on glucocorticoids, perindopril and carvedilol. AV block and LV dysfunction persisted despite 2 weeks of treatment. He ultimately became hypotensive which prompted an implantation of a cardiac resynchronisation therapy pacemaker. Follow-up echocardiogram at 6 weeks showed resolution of LV systolic dysfunction. However, he continued to have AV block.© BMJ Publishing Group Limited 2019. No commercial re-use. See rights and permissions. Published by BMJ.

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