{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,28]],"date-time":"2025-10-28T05:54:16Z","timestamp":1761630856386,"version":"3.37.3"},"reference-count":13,"publisher":"Wiley","license":[{"start":{"date-parts":[[2019,3,3]],"date-time":"2019-03-03T00:00:00Z","timestamp":1551571200000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Canadian Journal of Gastroenterology and Hepatology"],"published-print":{"date-parts":[[2019,3,3]]},"abstract":"<jats:p><jats:italic>Background<\/jats:italic>. Jackhammer esophagus is a hypercontractile esophageal disorder recently brought to light with the advent of high resolution manometry (HRM). As little is known about its clinical presentation, the aim of this study was to identify the clinical characteristics associated with this new gastrointestinal motility disorder.<jats:italic> Methods<\/jats:italic>. A retrospective study was conducted on patients visiting the CHUM\u2019s Gastro-Intestinal Motility Center from January 2015 to December 2017. The HRM diagnoses were collated in a database along with age and sex of every individual. The latest Chicago classification (version 3.0) was used. Among all the patients subjected to HRM, those diagnosed with Jackhammer esophagus were included in the study. Patient charts were reviewed to collect relevant demographic and clinical data.<jats:italic> Key Results<\/jats:italic>. A total of 36 patients with Jackhammer esophagus were included (62 <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M1\"><mml:mrow><mml:mo>\u00b1<\/mml:mo><\/mml:mrow><\/mml:math> 13 years age, 89% females). Their main symptoms were dysphagia (72%), pyrosis (42%), retrosternal chest pain (36%), and epigastralgia (33%). Other manometric findings were hypertonia (22%) and\/or inadequate relaxation (19%) of the lower esophageal sphincter. Among the 26 patients who had esogastroduodenoscopy, hiatal hernia was seen in 3 patients. Pathological gastroesophageal reflux was found in 4 of the 10 patients investigated by pH-monitoring.<jats:italic> Conclusions and Inferences<\/jats:italic>. Jackhammer esophagus represents 3% of the HRM diagnoses in this study, with a significant female preponderance. In more than two-thirds of cases, the clinical presentation of Jackhammer esophagus is dysphagia.<\/jats:p>","DOI":"10.1155\/2019\/5036160","type":"journal-article","created":{"date-parts":[[2019,3,3]],"date-time":"2019-03-03T18:32:49Z","timestamp":1551637969000},"page":"1-7","source":"Crossref","is-referenced-by-count":30,"title":["Jackhammer Esophagus: From Manometric Diagnosis to Clinical Presentation"],"prefix":"10.1155","volume":"2019","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8226-6181","authenticated-orcid":true,"given":"Marianne","family":"Cl\u00e9ment","sequence":"first","affiliation":[{"name":"Division of Gastroenterology, Gastro-Intestinal Motility Center, Centre Hospitalier de l\u2019Universit\u00e9 de Montr\u00e9al (CHUM), Montreal, QC, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wen Jing","family":"Zhu","sequence":"additional","affiliation":[{"name":"Division of Gastroenterology, Gastro-Intestinal Motility Center, Centre Hospitalier de l\u2019Universit\u00e9 de Montr\u00e9al (CHUM), Montreal, QC, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elissaveta","family":"Neshkova","sequence":"additional","affiliation":[{"name":"Division of Gastroenterology, Gastro-Intestinal Motility Center, Centre Hospitalier de l\u2019Universit\u00e9 de Montr\u00e9al (CHUM), Montreal, QC, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4272-6793","authenticated-orcid":true,"given":"Mickael","family":"Bouin","sequence":"additional","affiliation":[{"name":"Division of Gastroenterology, Gastro-Intestinal Motility Center, Centre Hospitalier de l\u2019Universit\u00e9 de Montr\u00e9al (CHUM), Montreal, QC, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","reference":[{"key":"1","first-page":"675","volume":"22","year":"2015","journal-title":"H\u00e9pato Gastro"},{"key":"2","doi-asserted-by":"publisher","DOI":"10.3390\/ijms18071399"},{"issue":"3","key":"3","volume":"29","year":"2017","journal-title":"Neurogastroenterology & Motility"},{"key":"4","doi-asserted-by":"publisher","DOI":"10.1038\/ajg.2011.313"},{"key":"5","doi-asserted-by":"publisher","DOI":"10.1097\/MCG.0000000000000496"},{"key":"6","doi-asserted-by":"publisher","DOI":"10.5056\/jnm15034"},{"key":"7","first-page":"234","volume":"107","year":"2015","journal-title":"Revista Espa\u00f1ola de Enfermedades Digestivas"},{"key":"8","doi-asserted-by":"publisher","DOI":"10.1055\/s-0034-1391985"},{"key":"9","doi-asserted-by":"publisher","DOI":"10.5009\/gnl15388"},{"key":"10","doi-asserted-by":"publisher","DOI":"10.1111\/dote.12282"},{"key":"11","doi-asserted-by":"publisher","DOI":"10.17235\/reed.2017.4773\/2016"},{"key":"12","doi-asserted-by":"publisher","DOI":"10.1111\/nmo.13221"},{"key":"13","doi-asserted-by":"publisher","DOI":"10.1111\/nmo.12975"}],"container-title":["Canadian Journal of Gastroenterology and Hepatology"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/downloads.hindawi.com\/journals\/cjgh\/2019\/5036160.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/cjgh\/2019\/5036160.xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/cjgh\/2019\/5036160.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,3,3]],"date-time":"2019-03-03T18:32:50Z","timestamp":1551637970000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.hindawi.com\/journals\/cjgh\/2019\/5036160\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,3,3]]},"references-count":13,"alternative-id":["5036160","5036160"],"URL":"https:\/\/doi.org\/10.1155\/2019\/5036160","relation":{},"ISSN":["2291-2789","2291-2797"],"issn-type":[{"type":"print","value":"2291-2789"},{"type":"electronic","value":"2291-2797"}],"subject":[],"published":{"date-parts":[[2019,3,3]]}}}