Meperidine hydrochloride used intravenously before gastroscopy; preliminary report.
D000698:Analgesia; D000758:Anesthesia; D000760:Anesthesia and Analgesia; D005773:Gastroscopy; D008614:Meperidine; D010146:Pain; D059408:Pain Management
D008614:Meperidine
GASTROSCOPY; MEPERIDINE/anesthesia and analgesia