{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,12]],"date-time":"2026-09-12T17:20:15Z","timestamp":1789233615859,"version":"build-2803163510"},"reference-count":10,"publisher":"Springer Science and Business Media LLC","issue":"3","license":[{"start":{"date-parts":[[2025,11,16]],"date-time":"2025-11-16T00:00:00Z","timestamp":1763251200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2025,11,16]],"date-time":"2025-11-16T00:00:00Z","timestamp":1763251200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"DOI":"10.13039\/100012834","name":"Gifu University","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100012834","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Dysphagia"],"published-print":{"date-parts":[[2026,6]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>This report describes a case in which a patient with an open tracheostomy, following surgery for severe dysphagia, acquired vacuum swallowing and exhibited rapid bolus inflow into the esophagus. A 39-year-old man with bulbar palsy caused by medullary surgery demonstrated impaired pharyngeal contraction and upper esophageal sphincter opening. After undergoing laryngeal suspension and cricopharyngeal myotomy, videofluoroscopic evaluation of swallowing revealed rapid passage of the bolus from the pharynx into the esophagus. High-resolution manometry demonstrated markedly negative intraesophageal pressure accompanied by simultaneous elevation of lower esophageal sphincter pressure during swallowing. These findings suggest that the patient had spontaneously acquired vacuum swallowing despite the presence of a tracheostoma communicating with the atmosphere. Recognition of this compensatory mechanism is important because it may facilitate bolus transport in individuals with tracheostomy. Increased awareness of this swallowing pattern may prevent underdiagnosis and offer new insights into rehabilitation strategies for dysphagia.<\/jats:p>","DOI":"10.1007\/s00455-025-10904-5","type":"journal-article","created":{"date-parts":[[2025,11,16]],"date-time":"2025-11-16T15:51:30Z","timestamp":1763308290000},"page":"692-696","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Rapid Bolus Inflow into the Esophagus in a Patient with a Tracheostomy after Surgical Treatment for Dysphagia"],"prefix":"10.1007","volume":"41","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8648-9254","authenticated-orcid":false,"given":"Kenjiro","family":"Kunieda","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takashi","family":"Shigematsu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hideaki","family":"Kanazawa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Akiko","family":"Nomoto","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kyoko","family":"Hojo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ichiro","family":"Fujishima","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,11,16]]},"reference":[{"key":"10904_CR1","doi-asserted-by":"publisher","first-page":"201","DOI":"10.1016\/j.jpainsymman.2012.07.020","volume":"46","author":"K Kunieda","year":"2013","unstructured":"Kunieda K, Ohno T, Fujishima I, Hojo K, Morita T. Reliability and validity of a tool to measure the severity of dysphagia: the food intake LEVEL scale. J Pain Symptom Manage. 2013;46:201\u20136. https:\/\/doi.org\/10.1016\/j.jpainsymman.2012.07.020.","journal-title":"J Pain Symptom Manage"},{"key":"10904_CR2","doi-asserted-by":"publisher","first-page":"e821","DOI":"10.1111\/nmo.12209","volume":"25","author":"Y Lan","year":"2013","unstructured":"Lan Y, Xu G, Dou Z, Wan G, Yu F, Lin T. Biomechanical changes in the pharynx and upper esophageal sphincter after modified balloon dilatation in brainstem stroke patients with dysphagia. Neurogastroenterol Motil. 2013;25:e821\u20139. https:\/\/doi.org\/10.1111\/nmo.12209.","journal-title":"Neurogastroenterol Motil"},{"key":"10904_CR3","doi-asserted-by":"publisher","first-page":"514","DOI":"10.1007\/s00455-012-9402-4","volume":"27","author":"Z Dou","year":"2012","unstructured":"Dou Z, Zu Y, Wen H, Wan G, Jiang L, Hu Y. The effect of different catheter balloon dilatation modes on cricopharyngeal dysfunction in patients with dysphagia. Dysphagia. 2012;27:514\u201320. https:\/\/doi.org\/10.1007\/s00455-012-9402-4.","journal-title":"Dysphagia"},{"key":"10904_CR4","doi-asserted-by":"publisher","first-page":"e62191","DOI":"10.7759\/cureus.62191","volume":"16","author":"M Ogawa","year":"2024","unstructured":"Ogawa M, Kenjiro K, Ohno T, Okamoto K, Fujishima I. Mechanism of the immediate effect of balloon dilation therapy in spinal muscular atrophy with dysphagia: A high-resolution manometric study. Cureus. 2024;16:e62191. https:\/\/doi.org\/10.7759\/cureus.62191.","journal-title":"Cureus"},{"key":"10904_CR5","doi-asserted-by":"publisher","first-page":"e81","DOI":"10.1097\/PHM.0000000000000872","volume":"97","author":"K Kunieda","year":"2018","unstructured":"Kunieda K, Kubo S, Fujishima I. New swallowing method to improve pharyngeal passage of a bolus by creating negative pressure in the esophagus-vacuum swallowing. Am J Phys Med Rehabil. 2018;97:e81\u20134. https:\/\/doi.org\/10.1097\/PHM.0000000000000872.","journal-title":"Am J Phys Med Rehabil"},{"key":"10904_CR6","doi-asserted-by":"publisher","DOI":"10.1007\/s11910-020-01081-z","volume":"20","author":"CA Jones","year":"2020","unstructured":"Jones CA, Colletti CM, Ding MC. Post-stroke dysphagia: recent insights and unanswered questions. Curr Neurol Neurosci Rep. 2020;20:61. https:\/\/doi.org\/10.1007\/s11910-020-01081-z.","journal-title":"Curr Neurol Neurosci Rep"},{"key":"10904_CR7","doi-asserted-by":"publisher","DOI":"10.1097\/MD.0000000000028524","volume":"101","author":"K Kunieda","year":"2022","unstructured":"Kunieda K, Sugiyama J, Nomoto A, Ohno T, Shigematsu T, Fujishima I. Compensatory swallowing methods in a patient with dysphagia due to lateral medullary syndrome-vacuum and prolonged swallowing: a case report. Medicine (Baltimore). 2022;101:e28524. https:\/\/doi.org\/10.1097\/MD.0000000000028524.","journal-title":"Medicine (Baltimore)"},{"key":"10904_CR8","doi-asserted-by":"publisher","first-page":"e53129","DOI":"10.7759\/cureus.53129","volume":"16","author":"K Okamoto","year":"2024","unstructured":"Okamoto K, Kunieda K, Ohno T, Ogawa M, Fujishima I. A case of a patient with spinal muscular atrophy with dysphagia who acquired vacuum swallowing. Cureus. 2024;16:e53129. https:\/\/doi.org\/10.7759\/cureus.53129.","journal-title":"Cureus"},{"key":"10904_CR9","first-page":"224","volume":"7","author":"K Kunieda","year":"2018","unstructured":"Kunieda K, Kubo S, Fujishima I. A new swallowing method to improve pharyngeal passage by creating negative pressure in the esophagus-vacuum swallowing: reproduction in normal subjects. Deglutition. 2018;7:224\u201330.","journal-title":"Deglutition"},{"key":"10904_CR10","doi-asserted-by":"publisher","first-page":"399","DOI":"10.1007\/s00455-024-10741-y","volume":"40","author":"K Kunieda","year":"2025","unstructured":"Kunieda K, Suzuki S, Naganuma S, Okamoto K, Ohno T, Shigematsu T, et al. Efficacy and safety of vacuum swallowing based on a strong negative esophageal pressure in healthy individuals. Dysphagia. 2025;40:399\u2013406. https:\/\/doi.org\/10.1007\/s00455-024-10741-y.","journal-title":"Dysphagia"}],"container-title":["Dysphagia"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00455-025-10904-5.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s00455-025-10904-5","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00455-025-10904-5.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,6,23]],"date-time":"2026-06-23T10:24:03Z","timestamp":1782210243000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1007\/s00455-025-10904-5"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,11,16]]},"references-count":10,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2026,6]]}},"alternative-id":["10904"],"URL":"https:\/\/doi.org\/10.1007\/s00455-025-10904-5","relation":{},"ISSN":["0179-051X","1432-0460"],"issn-type":[{"value":"0179-051X","type":"print"},{"value":"1432-0460","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,11,16]]},"assertion":[{"value":"25 July 2025","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"16 October 2025","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"16 November 2025","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}}]}}