Jessica X Yu1, Jason R Baker1, Lydia Watts1, Oliver A Varban2,3, Joan W Chen1, Joel H Rubenstein1,4, Allison R Schulman5. 1. Division of Gastroenterology and Hepatology, University of Michigan, 1500 E. Medical Center Dr., 3912 Taubman Center, Ann Arbor, MI, 48109-5362, USA. 2. Department of Surgery, University of Michigan, Ann Arbor, MI, USA. 3. Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor, MI, USA. 4. Veterans Affairs Center for Clinical Management Research, Ann Arbor VA Medical Center, Ann Arbor, MI, USA. 5. Division of Gastroenterology and Hepatology, University of Michigan, 1500 E. Medical Center Dr., 3912 Taubman Center, Ann Arbor, MI, 48109-5362, USA. arschulm@med.umich.edu.
Abstract
BACKGROUND: Stenosis after sleeve gastrectomy (SG) is common though diagnostic criteria and predictors of treatment response is unknown. Endoluminal functional impedance planimetry (EndoFLIP) is a diagnostic tool for measuring lumen geometry. We aimed to use EndoFLIP to characterize SG stenosis. METHODS: We enrolled SG stenosis patients undergoing serial pneumatic dilations between May 2018 and November 2018. Outcomes of interest included pre- and post-dilation EndoFLIP measurements and post-dilation symptom response. RESULTS: We included 10 patients who underwent a mean of 1.8 ± 0.7 dilations. Pre-dilation EndoFLIP characteristics were similar for responders and non-responders. Responders had larger mean post-dilation diameter (19.9 ± 2.9 mm vs 13.1 ± 1.3 mm, p = 0.007) and DI (21.3 ± 1.0 mm2/Hg vs 4.0 ± 5.4 mm2/Hg, p = 0.04) than non-responders. CONCLUSION: Our pilot study supports the use of EndoFLIP in the management of SG stenosis.
BACKGROUND: Stenosis after sleeve gastrectomy (SG) is common though diagnostic criteria and predictors of treatment response is unknown. Endoluminal functional impedance planimetry (EndoFLIP) is a diagnostic tool for measuring lumen geometry. We aimed to use EndoFLIP to characterize SG stenosis. METHODS: We enrolled SG stenosis patients undergoing serial pneumatic dilations between May 2018 and November 2018. Outcomes of interest included pre- and post-dilation EndoFLIP measurements and post-dilation symptom response. RESULTS: We included 10 patients who underwent a mean of 1.8 ± 0.7 dilations. Pre-dilation EndoFLIP characteristics were similar for responders and non-responders. Responders had larger mean post-dilation diameter (19.9 ± 2.9 mm vs 13.1 ± 1.3 mm, p = 0.007) and DI (21.3 ± 1.0 mm2/Hg vs 4.0 ± 5.4 mm2/Hg, p = 0.04) than non-responders. CONCLUSION: Our pilot study supports the use of EndoFLIP in the management of SG stenosis.
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