患者，男，６３岁。因反复阵发性心悸２月余入院。入院前２月余患者无明显诱因感阵发性心悸，发作时辗转不安，难以忍受，但无心前区压榨感及心累、气促等症状，持续１小时后可自行缓解，发作无规律，服用“速效救心丸”无效，以“心悸待查”收入院。入院查体：ＢＰ１８／... Patient, male, 63 years old. Due to repeated paroxysmal palpitations more than 2 months admitted to hospital. 2 months before admission, patients with no obvious incentive to feel paroxysmal palpitations, the onset was unbearable, unbearable, but no sense of urgency and crushed heart and tiredness, shortness of breath and other symptoms continued for 1 hour after the self-relief, irregular seizures, Taking “quick save heart pill” invalid, “palpitations pending investigation” income hospital. Admission examination: BP18 / ...