• Internal medicine · Aug 2022

    Acute Lymphocyte Myocarditis Associated with Influenza Vaccination.

    • Ryo Nakamura, AndoShin-IchiSIDepartment of Cardiology Division, Saiseikai Futsukaichi Hospital, Japan.Sleep Apnea Center, Kyushu University Hospital, Japan., Seiya Kato, and Toshiaki Kadokami.
    • Department of Cardiology Division, Saiseikai Futsukaichi Hospital, Japan.
    • Intern. Med. 2022 Aug 1; 61 (15): 2307-2313.

    AbstractAn elderly patient was admitted to our hospital for acute heart failure soon after receiving influenza vaccination. On admission, chest radiography revealed pulmonary edema. An electrocardiogram showed poor R progression, and echocardiography showed diffuse hypokinesis and myocardial edema. The serum troponin level was elevated. A histopathological evaluation indicated active myocarditis with lymphocyte-predominant infiltrates. A drug-induced lymphocyte stimulation test (DLST) was positive. The patient rapidly recovered from heart failure after treatment with conventional heart failure drugs, such as intravenous diuretics and vasodilators. These experimental data and the clinical course suggest that influenza vaccination was responsible for heart failure due to acute lymphocyte myocarditis.

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