胃食管反流是一种常见现象，主要发生在餐后，多表现为烧心或反食。最近大量流行病学调查表明，约5％的美国人几乎每天都有烧心[1]，出现烧心时常服用如抑酸剂一类的药物，约13％的美国人至少每周服用2次抑酸剂[2]。虽然伴有烧心症状的胃食管反流如此常见，但其长期存在带来的 Gastroesophageal reflux is a common phenomenon, mainly in the postprandial, more performance for heartburn or anti-food. A large number of recent epidemiological studies have shown that about 5% of Americans have heartburn almost every day [1], heartburn often takes drugs such as antacids, and about 13% of Americans take it at least twice daily for acid suppression Agent [2]. Although gastroesophageal reflux with heartburn symptoms is so common, its long-term presence brings