کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3285644 1209235 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Transsphincteric pH Profile at the Gastroesophageal Junction
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی بیماری‌های گوارشی
پیش نمایش صفحه اول مقاله
Transsphincteric pH Profile at the Gastroesophageal Junction
چکیده انگلیسی
Background & Aims: Esophageal acid exposure conventionally is measured 5 cm above the lower esophageal sphincter (LES). The aim of this study was to compare pH profiles at sites within the LES, the distal esophagus, and the proximal stomach. Methods: Ten normal subjects underwent esophageal manometry followed by 24-hour esophagogastric pH monitoring using an 8-channel pH probe recording at 5 and 1.5 cm above and at 0, 1.5, 3.0, 4.5, 6.0, and 9.5 cm below the proximal LES border. During pH recording, a 4-hour gastric emptying test with an egg sandwich meal was performed. Results: The LES was 3.2 ± 0.4 cm in length. There was a progressive increase in acid exposure from the esophageal to the gastric pH sensors. pH was less than 4 for 3.4% ± 1.6%, 12.7% ± 8.5%, 26.5% ± 10.2%, 48.1% ± 11.3%, 66.5% ± 9.9%, 80.8% ± 5.6%, 89.2% ± 3.0%, and 96.7% ± 1.1% of the total time for pH probes at 5 and 1.5 cm above and 0, 1.5, 3, 4.5, 6.0, and 9.5 cm below the proximal LES border, respectively. Percentage acid exposures correlated significantly with the position of the probe (r = −0.95; P < .01). Intrasphincteric acidity increased postprandially. Gastric emptying was correlated inversely with the intragastric hydrogen ion concentration (r = −0.82). Conclusions: The percentage of recording time that pH was less than 4 was significantly higher in the intrasphincteric area and 1.5 cm above the proximal LES compared with the traditional site 5 cm above the proximal manometric LES border. High acid exposure in the intrasphincteric region might explain the susceptibility of the distal esophagus to erosions, strictures, and Barrett's esophagus.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Clinical Gastroenterology and Hepatology - Volume 6, Issue 6, June 2008, Pages 630-634
نویسندگان
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