TY - JOUR T1 - Nivolumab-induced myocarditis complicated by complete atrioventricular block in a patient with metastatic non-small cell lung cancer JF - BMJ Case Reports JO - BMJ Case Reports DO - 10.1136/bcr-2019-229963 VL - 12 IS - 7 SP - e229963 AU - Jin Lin Tan AU - Augustine Nyasha Mugwagwa AU - Luke Cieslik AU - Rohit Joshi Y1 - 2019/07/01 UR - http://casereports.bmj.com/content/12/7/e229963.abstract N2 - We 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. ER -