Pediatr Gastroenterol Hepatol Nutr.  2018 Oct;21(4):257-263. 10.5223/pghn.2018.21.4.257.

Twenty-Four Hour pH Study and Manometry in Gastric Esophageal Substitutes in Children

• Kekre G
• Dikshit V
• Kothari P
• Laddha A
• Gupta A

• KMID: 2421987
• DOI: http://doi.org/10.5223/pghn.2018.21.4.257

Abstract

PURPOSE
Studies on the physiology of the transposed stomach as an esophageal substitute in the form of a gastric pull-up or a gastric tube in children are limited. We conducted a study of motility and the pH of gastric esophageal substitutes using manometry and 24-hour pH measurements in 10 such patients.
METHODS
Manometry and 24 hour pH studies were performed on 10 children aged 24 to 55 months who had undergone gastric esophageal replacement.
RESULTS
Six gastric tubes (4, isoperistaltic; 2, reverse gastric tubes) and 4 gastric pull-ups were studied. Two gastric tubes and 4 gastric pull-ups were transhiatal. Four gastric tubes were retrosternal. The mean of the lowest pH at the midpoint of the substitute was 4.0 (range, 2.8-5.0) and in the stomach remaining below the diaphragm was 3.3 (range, 1.9-4.2). In both types of substitute, the difference between the peak and the nadir pH recorded in the intra-thoracic and the sub-diaphragmatic portion of the stomach was statistically significant (p < 0.05), with the pH in the portion below the diaphragm being lower. The lowest pH values in the substitute and in the remnant stomach were noted mainly in the evening hours whereas the highest pH was noted mainly in the morning hours. All the cases showed a simultaneous rise in the intra-cavitatory pressure along the substitute while swallowing.
CONCLUSION
The study suggested a normal gastric circadian rhythm in the gastric esophageal substitute. Mass contractions occurred in response to swallowing. The substitute may be able to effectively clear contents.

Keyword

Gastric tube; Gastric pull-up; Esophageal substitution; Esophageal manometry; 24-hour pH

MeSH Terms

Child*
Circadian Rhythm
Deglutition
Diaphragm
Gastric Stump
Humans
Hydrogen-Ion Concentration*
Manometry*
Physiology
Stomach

Figure

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  Fig. 1 Position of the transducers in (A) gastric tube esophagoplasty and (B) gastric pull-up.

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