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Air swallowing, belching, acid and non‐acid reflux in patients with functional dyspepsia

2007; Wiley; Volume: 25; Issue: 8 Linguagem: Inglês

10.1111/j.1365-2036.2007.03279.x

1365-2036

José M. Conchillo, Mohamed Selimah, Albert J. Bredenoord, Melvin Samsom, A. J. P. M. Smout,

Gastrointestinal motility and disorders

SUMMARY Background Frequent belching is a common symptom in patients with functional dyspepsia with a reported incidence up to 80%. We hypothesized that patients with functional dyspepsia possibly have a higher frequency of belching than healthy subjects secondary to frequent air swallowing. Aim To assess air swallowing, belching, acid and non‐acid reflux patterns of patients with functional dyspepsia. Methods Combined 24‐h oesophageal impedance and pH monitoring was performed in 10 functional dyspepsia patients and 10 controls. Analysis of the impedance‐pH signals included incidence of air swallows, belching, acid and non‐acid reflux. Results The incidence of air swallows in functional dyspepsia patients were significantly higher compared with controls (153 ± 15 vs. 79 ± 10, P < 0.001), while the incidence of liquid‐only swallows were not significantly increased. The proportions of gas‐containing reflux episodes (belches) and non‐acid reflux episodes in functional dyspepsia patients were significantly higher when compared with controls (66.4 vs. 44.4%, P = 0.04 and 70.1 vs. 45.9%, P = 0.009, respectively). Conclusion Patients with functional dyspepsia swallow air more frequently than controls and this is associated with an increased incidence of non‐acid gaseous gastro‐oesophageal reflux.