Hello, my wife has a arrythmia. It is tachicardia, but we do not know what kind of arrythmia. She is 33 years old. Her disease activated when she looks normal, it is suddenly happen, then her heart beat about 180 per minute, continuously about 30 minute, then stop it. At the moment she took a konkor and a validol. We have a ECG when tachicardia activates, and echocardiogramm is when her heart rhythm is normal. Please tell me which one of arrythmia ?