PS01.002: INTERSPHINCTERIC ESOPHAGEAL LENGTH IN ADULTS

Abstract

Abstract Background High Resolution Manometry (HRM) has replaced standard water perfused manometery as the gold standard for esophageal testing. While normal and abnormal parameters continue to be refined for HRM there is no literature related to manometric esophageal length in adult population using HRM. Aim of this study is to define normal range for esophageal length and variation with patient height. Methods An IRB approved, prospectively maintained esophageal testing registry was queried to identify patients who underwent HRM between 11/01/2016 and 11/01/2017. Patients with history of previous esophageal surgery, hiatal hernia or major disorders of peristalsis were excluded. Inter-sphincteric esophageal length (cm) was measured from the lower border of UES to the upper border of LES during inhalation. Esophageal Length Index (ELI) was calculated by dividing the esophageal length by patient height. Results A total of1139 patients underwent HRM in the study period of which 235 patients met inclusion criteria and form the cohort for this study. Mean age was 57.3; BMI was 27.3. Median height was 166.6 cm, inter-sphincteric length was 22.4 cm. Mean ELI was 0.135 (+ 0.012), with 5th and 95th percentile range of 0.113 and 0.154 respectively (Figure 1). Conclusion Esophageal length and ELI varies in the normal population. An ELI of < 0.113 draws attention to possible short esophagus. It would be interesting to correlate these parameters with intra-abdominal esophageal length in patients undergoing hiatus hernia repair. Disclosure All authors have declared no conflicts of interest.