How to determine viral myocarditis induced arrhythmia?

Determine whether the arrhythmia caused by viral myocarditis following are the main points: (1) regular first infections: in particular upper respiratory tract infection, and often have fever, joint pain, general malaise and other symptoms. A small number of patients with nausea, vomiting, and other gastrointestinal symptoms. (2) followed by lightheadedness, heart palpitations, chest tightness, heart before District pain, dizziness, breathing difficulties and other symptoms of myocarditis. (3) medical degree fever can be found not parallel with the various tachycardia or other arrhythmias, and some patients have heart expand, heart sounds change, the third heart sound can be heard first heart sound or reduce or fourth heart sounds奔马law. (4) laboratory tests: white blood cell count can be increased or not high, such as the acute phase erythrocyte sedimentation rate growth, including serum enzymes aspartate aminotransferase, lactate dehydrogenase, creatine phosphate kinase, etc. can be increased. ECG changes that ST  T, R wave reduced pathological Q wave, about 1 / 3 of patients have I to second-degree atrioventricular block. (5) etiology inspection:咽拭子or feces separable from the virus, specific antibody in serum (and, coagulation mechanism, complement combination test) increased titration of IgM increased. As for myocardial myocardial biopsy can be isolated from the virus. So whether the clinical diagnosis of arrhythmia caused by myocarditis, must be integrated with the history, clinical manifestations and support checks to determine. In addition, myocarditis can also by the "bacteria" infection, such as streptococcus infection caused by rheumatic fever can also cause rheumatic myocarditis, according to blood, erythrocyte sedimentation rate, the anti-"O" and the history, it is not difficult phase with the identification of viral myocarditis.