ISSN:
1573-2568
Keywords:
GASTROESOPHAGEAL REFLUX
;
ESOPHAGITIS
;
LOWER ESOPHAGEAL SPHINCTER
;
TRANSIENT RELAXATION
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract Prolonged recordings of esophageal motility haveshown that dynamic changes of lower esophageal sphincter(LES) pressure such as transient LES relaxation and LESpressure drifts are the most common mechanisms underlying gastroesophageal reflux (GER). Thecoexistence of a delayed gastric emptying has also beenreported in a high proportion of patients with refluxdisease. However, not much information is available on the effects of antireflux therapy on thepathogenetic mechanisms of GER. The purpose of thisstudy was to determine in a group of children withsevere reflux disease the effect of omeprazole therapy on motor changes of LES underlying GER as wellas on gastric emptying time. Twenty-two children (medianage: 6.6 years) with GER disease, refractory to combinedranitidine and cisapride administration, entered into an eight-week omeprazole course.Ten subjects with moderate GER disease served ascontrols (median age: 6.0 years). Before and afteromeprazole administration, the following variables were assessed: esophagitis grading, fasting and fedsimultaneous prolonged recording of distal esophagealsphincter pressure (with a sleeve catheter) andintraesophageal pH, LES and esophageal peristalsisamplitude, and gastric emptying time of a mixedsolid-liquid meal (measured with gastric ultrasound). Ascompared to controls, patients showed a higher rate oftransient LES relaxation and LES pressure drift (P 〈0.01), a reduced amplitude of basal sphincter pressure(P 〈 0.01) and peristalsis (P 〈 0.05), and a moreprolonged gastric emptying time (P 〈 0.05). Afterending omeprazole, there was no significant change inany of the motor abnormalities of the esophagus and ingastric emptying time despite a marked improvement ofsymptoms and esophagitis in all patients. Sixteenpatients were symptomatic when reevaluated on a clinical basis two months after ending therapy. Weconclude that in children with severe GER disease, anabnormally high rate of both transient LES relaxationand LES pressure drift and slow gastric emptying are not affected by omperazole treatment, eventhough esophageal mucosal damage is markedly improved orcured. These abnormalities represent a primary motordisorder and can be implicated in the refractoriness of reflux disease.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1018853516206
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