病毒性心肌炎是病毒感染引起的心肌炎性病变。轻者可无症状,重者可猝死或心力衰竭。发病以夏秋季节为高,多见于儿童和青壮年,轻型者初起有上呼吸道或肠道感染症状,如发热、咽痛、全身酸痛、腹泻、疲乏无力,食欲减退等,一周后出现不同程度的胸闷、心悸、气短、心前区隐痛或恶心呕吐;重型者起病急骤,较快出现心力衰竭、休克或猝死。就诊时可发现心率增快,第一心音减弱,心电图常出现广泛ST—T异常,室性早搏、房室传导阻滞、低电压、Q-T延长等。 Viral myocarditis is a viral infection that causes myocarditis. Light asymptomatic, severe cases can be sudden death or heart failure. The incidence of summer and autumn as high, more common in children and young adults, light-induced early upper respiratory tract or intestinal infection symptoms, such as fever, sore throat, body aches, diarrhea, fatigue, loss of appetite and so on, a week after the occurrence of varying degrees Chest tightness, palpitations, shortness of breath, precordial pain or nausea and vomiting; severe cases of acute onset, faster heart failure, shock or sudden death. Visits can be found faster heart rate, the first heart sound weakened, ECG often appear extensive ST-T abnormalities, ventricular premature beats, atrioventricular block, low voltage, Q-T extended.