CONTRIBUTION TO THE STUDY OF THE AETIOPATHOGENESIS OF REFLUX �OESOPHAGITIS AFTER GENERAL ANAESTHESIA IN THE DOG
Abstract
IN THE PRESENT WORK AN ATTEMPT WAS MADE TO STUDY THE EFFECTS OF: A) PREANAESTHETIC AND ANAESTHETIC MEDICATION, B) SURGICAL PROCEDURE, C) POSITIONING OF THEANIMAL, D) DURATION OF THE PREOPERATIVE FASTING PERIOD AND E) AGE, SEX AND BREED OF THE DOG, ON GASTRO-OESOPHAGEAL REFLUX, WHICH IS THE TRIGGERING FACTOROF REFLUX OESOPHAGITIS. INTRALUMINAL OESOPHAGEAL PH WAS MEASURED AT A POINT 3-5 CM ABOVE THE LOWER OESOPHAGEAL SPHINCTER WHILE ALL 476 DOGS WERE UNDER HALOTHANE ANEASTHESIA. ALMOST 18% OF THE DOGS EXHIBITED A REFLUX EPISODE, THE PH OF THE REFLUXATE BEING LESS THAN 4 IN 90% AND MORE THAN 7.5 IN 10% OF THE REFLUX EPISODES. REGURGITATION AND FLOW OF THE REFLUXATE OUT OF THE MOUTH WAS OBSERVED IN 5% OF THE REFLUX EPISODES. ΤHE PREANAESTHETIC AND ANAESTHETIC MEDICATION SEEMED TO HAVE DIRECT EFFECT ON THE INCIDENCE OF GASTRO-OESOPHAGEAL REFLUX THE INCIDENCE OF REFLUX WAS HIGH ESPECIALLY IN DOGS PRESENTED FOR INTRA-ABDOMINAL SURGERY. THE MAJORITY OF THE REFLUX EPISOD ...
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