Impairment of secondary peristalsis in Barrett’s esophagus by transnasal endoscopy-based testing

Figure 1 Esophageal contractions induced by physiological saline and acid infusion were analyzed simultaneously using three different modalities, namely conventional manometry, endoscopic ultrasonography and endoscopic observation.

Figure 2 Comparisons of results of endoscopic evaluations [propulsive (n = 74) and non-propulsive (n = 58) contractions] and manometry (primary peristalsis, secondary peristalsis, failed, or no response).