心肌心包膜炎並不是罕見的疾病，但診斷時有延誤。在猛爆形的病例中，它可能導致病人循環衰竭或促發惡性心律不整，而使其死亡。在這份病例報告中，我們描述一位41歲男性病人，在有上呼吸道感染症狀一週後產生全身抽搐。心電圖顯示為心室頻脈。他的住院過程合併有肺水腫及休克。心電圖後來顯示廣泛性ST段上升及T波倒置的典型心肌心包膜炎變化。病人最後完全復原。病人的血清學檢查顯示副流行性感冒病毒抗體四倍上升。本病例的臨床意義在於急性心肌心包膜炎應考慮副流行性感冒病毒也是致病原之一，它的臨床過程是猛暴型的。

Myopericarditis is not uncommon, but often under-diagnosed. In fulminant cases, it may lead rapidly to circulatory failure or malignant arrhythmia, causing mortality. In this report, we describe a 41-year-old man who had episodes of convulsion one week after an upper respiratory tract infection. His electrocardiograms (ECGs) recorded during attack showed ventricular tachycardia. He had pulmonary edema and shock in the hospitalization course. The serial ECGs showed widespread PR depression, ST elevation and T-wave inversion afterwards, typical of myopericarditis change. The patient recovered finally. A paired serology test showed fourfold elevation of Parainfluenza virus type Ⅰ antibody titer, suggesting that the parainfluenza virus might be the causative agent. This case illustrates that the parainfluenza virus might have a causative role in acute myopericarditis in which the clinical course is fulminant.