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

Table 3 Frequency of primary and secondary contractions in the different groups following infusion of either physiological saline or acid

	No. primary contractions		No. secondary contractions
	Physiological saline	Acid	Physiological saline	Acid
Control group	1.3 ± 3.3	0.3 ± 0.9	8.0 ± 2.8	8.4 ± 2.4
Barrett’s esophagus	0.8 ± 1.2	0.7 ± 1.5	6.3 ± 3.1	7.2 ± 2.8
SSBE	1.1 ± 1.4	0.6 ± 1.0	7.3 ± 3.2	8.1 ± 2.9
LSBE	0.4 ± 0.7	1.0 ± 2.1	4.1 ± 1.2bd	5.3 ± 1.2bd

Data are the mean ± SD. Within the same infusion groups:

^bP < 0.01 vs control;

^dP < 0.01 vs patients with short segment Barrett’s esophagus (SSBE). LSBE: Long segment Barrett’s esophagus.