Methods:LES pressure was determined in 20 dogs. BTA was endoscopically injected circumferentially into the LES in 10 dogs, and saline injection as control group(10 dogs).
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- 方法:在胃镜下对BTA组(10条犬)LES分四点注射BTA,对照组(10条犬)注射生理盐水,分别于注射前?注射后一周测定LES的压力。