Background/Aims:
@EN The aim of this study was to document the circadian rhythmic variation of esophageal motor functions, and the effects of food on esophageal peristalsis.
@ES Methods:
@EN Standard esophageal manometry and 24-hour ambulatory esophageal pressure monitoring were one in 20 healthy volunteers (male: 14, female: 6, mean age: 26.5 years), using a newly developed miniaturized electronic pressure transducers and
portable
digital data recorders.
@ES Results:
@EN Compared to the wet swallow, the food elicited a significant increase in the amplitude of contractions. With 24-hour monitoring, approximately 1,000 contractions were recorded over a 24-hour period. Meals were associated with increase in
contraction
frequency and amplitude. During night, when the subjects were in supine position, esophageal motor activity was markedly decreased and disorganized. with a large percentage of the contractions being simultaneous and of high amplitude. However,
even
during the upright and meal periods there was a high incidence of simultaneous contractions, 17% and 5% respectively.
@ES Conclusions:
@EN There are circadian rhythmic variations in esophageal motor pattern and the normal values in a healthy Korean are contraction amplitude; greater than 25mmHg and less than 100mmHg, simultaneous contractions; less than 40% in upright position
and
less
than 55% in supine position, multipeaked contraction; less than 10%. (Korean J Gastroenterol 1995; 27: 1-8)
|