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題 名 | Change of Lower Esophageal Sphincter Pressure in Rabbits by Teflon Injection=兔隻經Teflon注射後食道下括約肌壓力的改變 |
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作 者 | 陳志毅; 許南榮; 關寶祥; 徐中平; 夏君毅; | 書刊名 | 中華醫學雜誌 |
卷 期 | 58:2 1996.08[民85.08] |
頁 次 | 頁79-83 |
分類號 | 416.216 |
關鍵詞 | 胃食道交接處; 胃食道逆流; 食道下括約肌; 鐵膚龍; Gastroesophageal junction; Gastroesophageal reflux; Lower esophageal sphincter; Teflon; |
語 文 | 英文(English) |
中文摘要 | 背景 食道下括約肌壓力的缺損,在胃食道逆流疾病扮演一關鍵角 色。本研究的目的在於探討兔隻以Teflon經由腹腔注射於食道胃交接處,測定 其食道下括約肌壓力改變的情形。 方法 本研究以紐西蘭種大白兔進行實驗,兔隻經麻醉後,以21號針頭裝載 Teflon膏劑,經腹腔注射於食道胃交接處。然後以水壓式食道壓力測量系統, 測定兔隻注射前、注射當日,以及注射後每週壓力的改變,持續注射後第四週。 最後,再觀察食道胃交接注射處組織學變化情形。 結果 十二隻兔注射前和注射當日的食道下括約肌平均壓力分別為29.71 +/- 8.0l mmHg及37.58 +/- 10.69 mmHg (p值,0.0329),注射後,第一週、第二週、 第三週,及第四週的食道下括約肌平均壓力分別為37.80 +/- 11.36 mmHg,35.77 +/- 3.54 mmHg,33.42 +/- 4.95 mmHg,及32.68 +/- 4.62 mmHg。比較注射前與注射後 第一週第二週壓力的改變,有顯著的差異,(p值,分別為0.0342和0.0281)。另 外,食道胃交接處組織學上發現,在注射處有良性異物肉芽反應,併有圓細胞 包圍Teflon膏劑。 結論 使用經腹部注射Teflon於兔隻的實驗,造成食道下括約肌壓力改變,在 技術上是可行的。然而,對於臨床上便用於胃食道逆流的病人,還須進一步評 估。 |
英文摘要 | Background. The mechanically incompetent lower esophageal sphincter (LES) plays a key role in patients with gastroesophageal reflux disease. The purpose of the study was to assess the pressure changes of LES in rabbits by intraabdominal injection of Teflon paste (Polytetrafluoroethylene) at the gastroesophageal junction. Methods. New Zealand white breed of rabbits were used in these studies. The anesthetized rabbit was injected with a 21-gauge needle and a syringe loaded with Teflon paste. The injection sites were around the gastroesophageal junction. LES pressure was measured by conventional methods using a water-filled infused system. The pressure gradient was measured immediately before and after the injection as well as by a weekly measurement over four weeks. The histologic characteristics of the injection sites were studied four weeks later. Results. The mean pressure gradient of LES of twelve rabbits of immediate preinjection and post-injection was 29.71 +/- 8.10 mmHg and 37.58 +/- 10.69 mmHg (mean +/- S.D.), respectively (p value, 0.0329). Animals were followed up for from one to four weeks, and were then sacrificed. The mean pressure gradient of LES of the twelve rabbits in the first week, the second week, the third week and the fourth week was 37.80 +/- 11.36 mmHg, 35.77 +/- 3.54 mmHg, 33.42 +/- 4.95 mmHg and 32.68 +/- 4.62 mmHg (mean +/- S.D.), respectively. Compared to pre-injection data, a significant difference was found in the first week and the second week (p value, 0.0342 and 0.0281, respectively). Gross examination of the gastroesophageal regions showed a well-defined Teflon mass of firm consistency at the site of the injection. Histological examination showed encapsulation of the implant by a thin layer of fibrous tissue and a benign foreign body granulomatous reaction with round cells surrounding the implant. Conclusions. It is technically feasible to produce experimentally pressure changes of LES in rabbits by intraabdominal injection of Teflon paste. Nevertheless, the clinical validity on patients with gastroesophageal reflux induced by the incompetence of LES remains to be verified. |
本系統中英文摘要資訊取自各篇刊載內容。