Objective:To evaluate the prophylactic effect of azasetron and granisetron on postoperative nausea and vomiting(PONV) resulting from analgesia following thoracic surgery.

• 目的:观察普胸外科术后镇痛中,应用阿扎司琼、格拉司琼预防术后恶心呕吐的效果。