Abstract
Normal esophageal motor parameters and nuteracker esophagus have never been well characterized in Italy. For this reason, we investigated 33 patients with nutcracker esophagus and compared them with 34 age- and sex-matched volunteers. Esophageal manometry revealed that lower esophageal sphincter pressure and contraction amplitude at 3, 8, 13, and 18 cm above the lower esophageal sphincter were significantly higher in patients (p<0.05). In addition, bi- and tripeaked waves were significantly increased in the patients at all esophageal recording levels. No significant differences were found between the 9 patients and 17 controls who were also evaluated for upper esophageal sphincter pressure.
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