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Backgound: The purpose of our study was to evaluate the use of minimally invasive Marshmallow Swallow Study (MSS) as a preoperative screening technique for patients and correlate marshmallow results with High Resolution Manometry (HRM) results and post-operative dysphagia following antireflux surgery.

Methods: A retrospective electronic chart review of data on 61 adult patients undergoing MSS was completed. Patients were included if they completed the MSS as well as: HRM and/or antireflux surgery.

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Ineffective esophageal motility and the vagus: current challenges and future prospects.

Clin Exp Gastroenterol

September 2016

Department of Gastroenterology, Renmin Hospital, Wuhan University, Wuhan, People's Republic of China; Division of Gastroenterology, Department of Medicine, Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON, Canada.

Ineffective esophageal motility (IEM) is characterized by low to very low amplitude propulsive contractions in the distal esophagus, hence primarily affecting the smooth muscle part of the esophagus. IEM is often found in patients with dysphagia or heartburn and is commonly associated with gastroesophageal reflux disease. IEM is assumed to be associated with ineffective bolus transport; however, this can be verified using impedance measurements or evaluation of a barium coated marshmallow swallow.

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The standard protocol for esophageal manometry involves placing the patient in the supine position with head turned to left (supine head left [SHL]) while evaluating liquid bolus swallows. Routinely, semisolid or solid boluses are not evaluated. Currently, the daily American diet includes up to 40% solid or semisolid texture.

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Optimizing the swallow protocol of clinical high-resolution esophageal manometry studies.

Neurogastroenterol Motil

October 2012

Department of Medicine, The Feinberg School of Medicine, Northwestern University, Chicago, IL 60611-2951, USA.

Background: The Chicago Classification (CC) of Esophageal Motility Disorders is based on 10 water swallows performed in the supine position. The aim of the study was to assess whether upright and provocative swallows (PS) provided important information beyond that obtained from the standard supine manometric protocol.

Methods: Two independent investigators reviewed high-resolution manometry (HRM) studies of 148 patients with both supine and upright liquid swallows and additional studies from patients with PS (increased volume, viscosity, and a marshmallow) for a resultant change in CC diagnoses.

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