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Fig. 1 | BMC Gastroenterology

Fig. 1

From: Comparison of the innovative endoscopic oropharyngeal airway and the conventional mouthpiece in elderly outpatients undergoing esophagogastroduodenoscopy under sedation: a prospective and randomized study

Fig. 1

The mouthpiece and the oropharyngeal airway. a The conventional mouthpiece (left) and the innovative endoscopic oropharyngeal airway (right). b The innovative endoscopic oropharyngeal airway is composed of a transparent mouthpiece (left) and a novel oropharyngeal airway (right)

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BMC Gastroenterology

ISSN: 1471-230X

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