{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,4]],"date-time":"2026-07-04T10:35:08Z","timestamp":1783161308320,"version":"3.54.6"},"reference-count":32,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2017,8,31]],"date-time":"2017-08-31T00:00:00Z","timestamp":1504137600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100000925","name":"National Health and Medical Research Council","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100000925","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["The Laryngoscope"],"published-print":{"date-parts":[[2018,6]]},"abstract":"<jats:sec><jats:title>Objectives\/Hypothesis<\/jats:title><jats:p>Characterization of the pharyngeal swallow response to volume challenges is important for swallowing function assessment. The diameter of the pressure\u2010impedance recording catheter may influence these results. In this study, we captured key physiological swallow measures in response to bolus volume utilizing recordings acquired by two catheters of different diameter.<\/jats:p><\/jats:sec><jats:sec><jats:title>Study Design<\/jats:title><jats:p>Ten healthy adults underwent repeat investigations with 8\u2010 and 10\u2010Fr catheters. Liquid bolus swallows of volumes 2.5, 5, 10, 20, and 30\u2009mL were recorded. Measures indicative of distension, contractility, and flow timing were assessed.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Pressure\u2010impedance recordings with pressure\u2010flow analysis were used to capture key distension, contractility, and pressure\u2010flow timing parameters.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Larger bolus volumes increased upper esophageal sphincter distension diameter (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.001) and distension pressures within the hypopharynx and upper esophageal sphincter (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.05). Bolus flow timing measures were longer, particularly latency of bolus propulsion ahead of the pharyngeal stripping wave (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.001). Use of a larger\u2010diameter catheter produced higher occlusive pressures, namely upper esophageal sphincter basal pressure (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.005) and upper esophageal sphincter postdeglutitive pressure peak (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The bolus volume swallowed changed measurements indicative of distension pressure, luminal diameter, and pressure\u2010flow timing; this is physiologically consistent with swallow modulation to accommodate larger, faster\u2010flowing boluses. Additionally, catheter diameter predominantly affects lumen occlusive pressures. Appropriate physiological interpretation of the pressure\u2010impedance recordings of pharyngeal swallowing requires consideration of the effects of volume and catheter diameter.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of Evidence<\/jats:title><jats:p>NA. <jats:italic>Laryngoscope<\/jats:italic>, 128:1328\u20131334, 2018<\/jats:p><\/jats:sec>","DOI":"10.1002\/lary.26820","type":"journal-article","created":{"date-parts":[[2017,8,31]],"date-time":"2017-08-31T11:59:37Z","timestamp":1504180777000},"page":"1328-1334","source":"Crossref","is-referenced-by-count":26,"title":["Characterization of swallow modulation in response to bolus volume in healthy subjects accounting for catheter diameter"],"prefix":"10.1002","volume":"128","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7272-5439","authenticated-orcid":false,"given":"Lara","family":"Ferris","sequence":"first","affiliation":[{"name":"Gastroenterology Department Women's and Children's Hospital Adelaide 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