RESUMO
Accumulation of air in the stomach increases the gastric volume, which activates receptors in the gastric wall. This results in a reflex that relaxes the lower oesophageal sphincter, whereby the intragastric air can escape through the oesophagus. Ventilation of the stomach via the oesophagus is known as belching (ructus). Belching often occurs in combination with reflux symptoms and dyspepsia. In these cases, other symptoms are often more predominant, and it is advisable to treat these first. In patients with aerophagia, belching is the most common reason for medical consultation. These patients belch frequently, up to 20 times per minute, and often during consultation. Aerophagia results from air being sucked into the oesophagus or injected by pharyngeal contraction, after which it is expelled immediately. In contrast to the described gastric belching, aerophagia is therefore a form of supragastric belching. Aerophagia is a behavioural disorder, and behavioural therapy or logopedics appears to be most common therapeutic approach.
