An observational study in Esophageal Stricture, Eosinophilic Esophagitis and Zenkers Diverticulum, sponsored by University of Pennsylvania. Terminated at 1 site in United States. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2019-09-12.
Sponsored by University of Pennsylvania · Observational
The purpose of this study is to investigate the use of a functional luminal imaging probe to characterize benign esophageal luminal strictures before and after dilation and identify predictors of response to therapy. Patients will be evaluated during endoscopy using functional luminal imaging (EndoFLIP; Crospon Medical Devices, Galway, Ireland) to characterize the geometry of benign luminal esophageal narrowing before and after dilation.
To date there is no effective way to objectively characterize and predict response to endoscopic dilation of luminal strictures of the GI tract. Endoscopic dilation allows effective remediation of benign esophageal and upper GI tract strictures. Stricture dilation is performed after the stricture diameter is crudely gauged by the endoscopist. Stricture characteristics are based on the severity of symptoms and appearance. A stricture may be graded as mild, moderate, severe and as to whether or not the endoscope is able to traverse the luminal narrowing. By precisely measuring the diameter and length of a stricture, the endoscopist can know exactly what type of dilation is necessary. Benign esophageal strictures may also be refractory to dilation and thus require multiple sessions, prior to achieving successful remediation. The purpose of this study is to investigate the use of a functional luminal imaging probe to characterize benign esophageal luminal strictures before and after dilation and identify predictors of response to therapy. Patients will be evaluated during endoscopy using functional luminal imaging (EndoFLIP; Crospon Medical Devices, Galway, Ireland) to characterize the geometry of benign luminal esophageal narrowing before and after dilation. The study will include patients with strictures referred for endoscopic dilation for the following indications: radiation induced strictures, peptic strictures, RFA induced strictures, EMR induced strictures, eosinophilic esophagitis, Zenkers diverticulum, and strictures related to surgical anastomoses. In patients with benign refractory esophageal strictures referred for endoluminal prostheses EndoFLIP will be used to characterize the stricture prior to stent placement.
322 studies on the registry are indexed under Esophagitis; 37 are open to participants now.
This study's enrollment of 5 is below the median of 100 across 91 observational studies indexed under Esophagitis.
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Adult patients with benign refractory esophageal strictures referred for placement of an esophageal stent are eligible for this study.
Exclusion Criteria:
To define the role of a functional luminal imaging probe (EndoFLIP) in benign upper GI luminal narrowing. EndoFlip measurement of the cross sectional area of the narrowing will be obtained prior to and after endoscopic dilation. Patients will follow up for repeat endoscopy and dilation if indicated. EndoFLIP measurements will be made again before and after dilation. The use of EndoFlip may offer insight in to the clinical and endoscopic predictors of successful stricture dilation.
Device: EndoFLIP
The Endolumenal Functional Lumenal Imaging Probe Imaging System is a technology developed to measure the dimensions \& function of a variety of hollow organs throughout the body. Since receiving FDA clearance for sale in the United States EndoFLIP has been used in a variety of clinical applications. We intend to investigate the potential clinical applications of EndoFLIP in the upper GI tract in patients with esophageal stenoses who require endoscopic therapy for benign esophageal strictures. The use of EndoFLIP to characterize a stricture pre- \& post- dilation may offer insight in to the clinical and endoscopic predictors of successful stricture dilation, \& what characteristics determine \& predict refractory \& recurrent strictures.
Also known as: Endolumenal Functional Lumenal Imaging Probe
Collection of Measurements of the Luminal Narrowing Using EndoFlip
The study is observational and a proof of concept study. Measurements of the luminal narrowing using EndoFLIP will be obtained.
Time frame: 12 Months
Observation of Pre-Endoscopic Therapy EndoFLIP Measurements
Patients will undergo the clinically indicated procedure for benign esophageal luminal narrowing remediation. Before undergoing clinically indicated esophageal therapy, measurements of the luminal narrowing using EndoFLIP will be obtained to identify potential predictors of response to endoscopic therapy. These measurements will included luminal diameter, length of narrowing and narrowing distensibility and will be obtained before and after delivery of the clinically indicated endoscopic therapy.
Time frame: 12 Months
Observation of Post-Endoscopic Therapy EndoFLIP Measurements
After undergoing clinically indicated esophageal therapy at clinically-indicated follow-up endoscopies, measurements of the luminal narrowing using EndoFLIP will again be obtained to identify responses to endoscopic therapy.
Time frame: 12 Months
This study is terminated, as verified in Sep 2019. You cannot join it, but the record below documents what was studied.
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University of Pennsylvania