Methods Low eresophagealsphincter( LES) pressure and in- tralum inal acidity w ere silm ultaneously recorded 1 hour before and 4 hours after the m eal using esophagealm anom etry and pH m onitoring devices in 10 young volunteers.

• 方法 采用下食管括约肌(LES)袖套式测压管、单晶锑pH 测定管,同步记录10 名志愿者空腹1 小时及餐后4 小时内的LES压力和食管pH 值。