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Accuracy of transnasal endoscopy with a disposable esophagoscope compared to conventional endoscopy Aedo MR; Zavala-Gonzalez MA; Meixueiro-Daza A; Remes-Troche JMWorld J Gastrointest Endosc 2014[Apr]; 6 (4): 128-36AIM: To assess feasibility of unsedated esophagoscopy using a small-caliber disposable transnasal esophagoscopy and to compare its accuracy with standard endoscopy. METHODS: We prospectively included subjects who were referred for upper endoscopy. All subjects underwent transnasal endoscopy with E.G. Scan. The disposable probe has a 3.6 mm gauge and at its distal end there is a 6 mm optical capsule, with a viewing angle of 125 degrees . Patients underwent conventional endoscopy after the completion of E.G. Scan. We describe the findings detected by the E.G. Scan and calculate the diagnostic accuracy, sensitivity, specificity, positive predictive value, negative predictive value and Kappa index for esophageal diagnosis. RESULTS: A total of 96 patients (54 women), mean age of 50.12 years (14 to 79), were evaluated. In all cases we were able to perform esophagoscopy with E.G. Scan. The average realization time was 5 min. A total of 58 alterations were detected in the esophagus, 49 gastric abnormalities and 13 duodenal abnormalities. We found that for esophageal varices, E.G. Scan has sensitivity, specificity and diagnostic accuracy of 95%, 97% and 97%, respectively. Kappa coefficients were 0.32 for hiatal hernia, 0.409 for erosive gastroesophageal reflux disease, 0.617 for Barrett's esophagus, and 0.909 for esophageal varices. CONCLUSION: Esophagoscopy with E.G. Scan is a well-tolerated, fast and safe procedure. It has an appropriate diagnostic accuracy for esophageal varices when compared with conventional endoscopy.ä |
