1.   Transient UOS relaxations -- The tracings were scanned for UOS relaxations that occurred independently of swallowing.

2.   The duration of the nadir of transient UOS relaxations was measured to the nearest second.

3.   Most common cavity episodes had a single transient UOS relaxation, but up to five were seen during a single episode.

4.   No grouping of the patients according to symptoms or the presence or absence of neurological deficit showed any difference in incidence of transient UOS relaxations.

5.   Our studies were designed to determine whether transient UOS relaxations occur during gastro-oesophageal reflux.

6.   There is a possibility that transient UOS relaxations may be unusually easy to trigger in some subjects and so predispose them to oesophagopharyngeal reflux.

7.   Our study has monitored UOS pressure in unsedated children and established the occurrence of transient UOS relaxations in children, which may contribute to oesophagopharyngeal reflux.