Young and middleaged people with longterm smoking, staying up late, and high mental stress, as well as patients with hypertension, diabetes, and hyperlipidemia, are all highrisk groups for sudden cardiac death.In addition to controlling “three highs,” quitting smoking, limiting alcohol, and maintaining regular routines, regular physical examinations can detect problems early for timely intervention. Electrocardiogram, echocardiography, and Holter monitor are basic tools fo