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Videoesophagography versus Endoscopy for Prediction of Intraoperative Hiatal Hernia Size

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Magnetic sphincter augmentation is a novel surgical procedure for gastroesophageal reflux disease. Limited dissection at the hiatus is one of the benefits of the procedure, but makes precise and accurate preoperative assessment of even small hiatal hernia critical. Retrospective cohort study of 136 patients having undergone both endoscopy (EGD) and videoesophagography followed by operative assessment for hiatal hernia during magnetic sphincter augmentation. The objective of the study is to determine which preoperative modality more accurately predicts operative hiatal hernia size. Videoesophagography underestimated operative measurement by 0.37 ± 1.41 cm (P = 0.003) and was less accurate in predicting intraoperative hiatal hernia size than EGD on linear regression analysis (β −0.729, SE 0.057, P < 0.001). EGD was less accurate at predicting hiatal hernia size as patient age increased (β −0.018, SE 0.007, P = 0.014) and with larger hernias (β −0.615, standard error (SE) 0.067, P < 0.001); however, endoscopic measurements did not differ significantly from intraoperative measurements (0.93 ± 1.23 cm vs 1.12 ± 1.43 cm, P = 0.12). EGD better predicts the size of small hiatal hernia measured during subsequent laparoscopic surgery.
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Document Type: Research Article

Affiliations: Department of Surgery, Keck School of Medicine of USC, University of Southern California, Los Angeles, California, USA

Publication date: March 1, 2018

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