Atropine inhibits gastric distension and pharyngeal receptor mediated lower oesophageal sphincter relaxation
| Autor: | C Chiareli, W Dixon, Ravinder K. Mittal, J Liu, Richard H. Holloway |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Adult
Atropine Male medicine.medical_specialty Manometry Gastroenterology Esophagus Internal medicine medicine Humans Esophageal disease business.industry Stomach Gastric distension Pharynx Reflux Parasympatholytics Abdominal distension Hydrogen-Ion Concentration Middle Aged medicine.disease Postprandial Period Oesophagus medicine.anatomical_structure Postprandial Female Esophagogastric Junction medicine.symptom business medicine.drug |
| Zdroj: | Gut. 41(3) |
| ISSN: | 0017-5749 |
| Popis: | Background—Atropine decreases the frequency of transient lower oesophageal sphincter relaxation (TLOSR) through an unknown mechanism. Gastric distension and pharyngeal receptor excitation are two possible sources for the afferent stimulus responsible for TLOSR.Aims—To determine whether atropine affects gastric distension induced TLOSR and pharyngeal receptor mediated lower oesophageal sphincter (LOS) relaxation.Methods—Oesophageal manometry and pH recordings were performed in 10 healthy volunteers on two separate days in the postprandial setting, following either atropine (15 μg/kg intravenous bolus and 4 μg/kg/h as a maintenance dose) or placebo. Pharyngeal receptor mediated LOS relaxation was studied in nine subjects by rapid injection of minute amounts of water (0.05, 0.1, 0.2, 0.3, and 0.4 ml) in the pharynx before and after atropine. Gastric distension mediated TLOSR was studied in eight subjects by insufflating the stomach with 300, 600 and 900 ml of CO2 before and after atropine.Results—Atropine reduced the frequency of spontaneous gastro-oesophageal reflux and TLOSR compared with placebo (pConclusion—(1) Atropine reduces the frequency of spontaneous reflux and TLOSR in normal subjects; and (2) gastric distension induced TLOSR and pharyngeal receptor mediated LOS relaxation is inhibited by atropine. |
| Databáze: | OpenAIRE |
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