So here the endoscope has gone into the stomach that is the cardiac and as soon as the endoscopist enters the cardiac what he does is he tries to turn his handle to the left so that the body of the stomach and the fundus of the stomach and the purpose is this is where all the secretions pull, the gastric acid or if there is any residue that pulls down here and the first thing that an endoscopist does is to suction these secretions and empty the stomach so that it avoids the risk of aspiration if the patient coughs or has a retching episode.內鏡醫生進入胃部後,首先要做的就是吸出這些分泌物,並排空胃部,以避免病人咳嗽或反胃時發生誤吸的危險。