{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,19]],"date-time":"2026-09-19T17:01:29Z","timestamp":1789837289666,"version":"4.0.1"},"reference-count":27,"publisher":"Elsevier BV","issue":"4","license":[{"start":{"date-parts":[[2020,4,1]],"date-time":"2020-04-01T00:00:00Z","timestamp":1585699200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2020,4,1]],"date-time":"2020-04-01T00:00:00Z","timestamp":1585699200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"content-domain":{"domain":["americanjournalofsurgery.com","clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["The American Journal of Surgery"],"published-print":{"date-parts":[[2020,4]]},"DOI":"10.1016\/j.amjsurg.2019.05.013","type":"journal-article","created":{"date-parts":[[2019,5,25]],"date-time":"2019-05-25T10:30:31Z","timestamp":1558780231000},"page":"683-689","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":11,"title":["Early ultrasound in acute appendicitis avoids CT in most patients but delays surgery and increases complicated appendicitis if nondiagnostic \u2013 A retrospective study"],"prefix":"10.1016","volume":"219","author":[{"given":"Itamar","family":"Ashkenazi","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Abdel-Rauf","family":"Zeina","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Oded","family":"Olsha","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"issue":"5","key":"10.1016\/j.amjsurg.2019.05.013_bib1","doi-asserted-by":"crossref","first-page":"910","DOI":"10.1093\/oxfordjournals.aje.a115734","article-title":"The epidemiology of appendicitis and appendectomy in the United States","volume":"132","author":"Addiss","year":"1990","journal-title":"Am J Epidemiol"},{"issue":"3","key":"10.1016\/j.amjsurg.2019.05.013_bib2","doi-asserted-by":"crossref","first-page":"194","DOI":"10.1016\/S0002-9610(96)00011-6","article-title":"Delay in surgery in acute appendicitis","volume":"173","author":"Eldar","year":"1997","journal-title":"Am J Surg"},{"issue":"1","key":"10.1016\/j.amjsurg.2019.05.013_bib3","doi-asserted-by":"crossref","first-page":"61","DOI":"10.1007\/s10140-011-0997-9","article-title":"Imaging of acute right lower quadrant abdominal pain: differential diagnoses beyond appendicitis","volume":"19","author":"Heller","year":"2012","journal-title":"Emerg Radiol"},{"issue":"7","key":"10.1016\/j.amjsurg.2019.05.013_bib4","first-page":"2027","article-title":"Acute Appendicitis: review and update","volume":"60","author":"Hardin","year":"1999","journal-title":"Am Fam Physician"},{"issue":"3","key":"10.1016\/j.amjsurg.2019.05.013_bib5","doi-asserted-by":"crossref","first-page":"141","DOI":"10.1056\/NEJM199801153380301","article-title":"Effect of computed tomography of the appendix on treatment of patients and use of hospital resources","volume":"338","author":"Rao","year":"1998","journal-title":"N\u00a0Engl J Med"},{"issue":"2","key":"10.1016\/j.amjsurg.2019.05.013_bib6","first-page":"173","article-title":"Computed tomography and ultrasonography in the diagnosis of equivocal acute appendicitis. A meta-analysis","volume":"28","author":"Al-Khayal","year":"2007","journal-title":"Saudi Med J"},{"issue":"6","key":"10.1016\/j.amjsurg.2019.05.013_bib7","doi-asserted-by":"crossref","first-page":"670","DOI":"10.1001\/archsurg.136.6.670","article-title":"Computed tomography and ultrasonography in the diagnosis of appendicitis: when are they indicated?","volume":"136","author":"Wilson","year":"2001","journal-title":"Arch Surg"},{"issue":"5","key":"10.1016\/j.amjsurg.2019.05.013_bib8","doi-asserted-by":"crossref","first-page":"1006","DOI":"10.2214\/AJR.13.12334","article-title":"Three-step sequential positioning algorithm during sonographic evaluation for appendicitis increases appendiceal visualization rate and reduces CT use","volume":"103","author":"Chang","year":"2014","journal-title":"Am J Roentgenol"},{"issue":"3","key":"10.1016\/j.amjsurg.2019.05.013_bib9","doi-asserted-by":"crossref","first-page":"267","DOI":"10.1080\/02841850601182162","article-title":"Ultrasound, computed tomography, and laboratory findin gs in the diagnosis of appendicitis","volume":"48","author":"Johansson","year":"2007","journal-title":"Acta Radiol"},{"issue":"2","key":"10.1016\/j.amjsurg.2019.05.013_bib10","doi-asserted-by":"crossref","first-page":"472","DOI":"10.1148\/radiol.2302021520","article-title":"Appendicitis: evaluation of sensitivity, specificity, and predictive values of US, Doppler US, and laboratory findings","volume":"230","author":"Kessler","year":"2004","journal-title":"Radiology"},{"issue":"3","key":"10.1016\/j.amjsurg.2019.05.013_bib11","doi-asserted-by":"crossref","first-page":"434","DOI":"10.1016\/j.jamcollsurg.2008.12.003","article-title":"Improving diagnosis of acute appendicitis: results of a diagnostic pathway with standard use of ultrasonography followed by selective use of CT","volume":"208","author":"Poortman","year":"2009","journal-title":"J\u00a0Am Coll Surg"},{"key":"10.1016\/j.amjsurg.2019.05.013_bib12","doi-asserted-by":"crossref","first-page":"34","DOI":"10.1186\/s13017-016-0090-5","article-title":"WSES Jerusalem guidelines for diagnosis and treatment of acute appendicitis","volume":"11","author":"Di Saverio","year":"2016","journal-title":"World J Emerg Surg"},{"issue":"4","key":"10.1016\/j.amjsurg.2019.05.013_bib13","doi-asserted-by":"crossref","first-page":"586","DOI":"10.1097\/SLA.0b013e31826a9602","article-title":"Progress in the diagnosis of appendicitis: a report from Washington state's surgical care and outcomes assessment program","volume":"256","author":"Drake","year":"2012","journal-title":"Ann Surg"},{"issue":"3","key":"10.1016\/j.amjsurg.2019.05.013_bib14","doi-asserted-by":"crossref","first-page":"538","DOI":"10.1097\/SLA.0b013e318265ea13","article-title":"Appendectomy timing. Waiting until the next morning increases the risk of surgical site infections","volume":"256","author":"Teixeira","year":"2012","journal-title":"Ann Surg"},{"issue":"5","key":"10.1016\/j.amjsurg.2019.05.013_bib15","doi-asserted-by":"crossref","first-page":"894","DOI":"10.1097\/SLA.0000000000000492","article-title":"Safety of sort, in-hospital delays before surgery for acute appendicitis: multicentre cohort study, systematic review, and meta-analysis","volume":"259","author":"The United Kingdom National Surgical Research Collaborative","year":"2014","journal-title":"Ann Surg"},{"issue":"2","key":"10.1016\/j.amjsurg.2019.05.013_bib16","doi-asserted-by":"crossref","first-page":"255","DOI":"10.1007\/s13244-016-0469-6","article-title":"How to diagnose acute appendicitis: ultrasound first","volume":"7","author":"Mostbeck","year":"2016","journal-title":"Insights Imaging"},{"issue":"5","key":"10.1016\/j.amjsurg.2019.05.013_bib17","doi-asserted-by":"crossref","first-page":"686","DOI":"10.1097\/00004728-199709000-00002","article-title":"Sensitivity and specificity of the individual CT signs of appendicitis: experience with 200 helical appendiceal CT examinations","volume":"21","author":"Rao","year":"1997","journal-title":"J\u00a0Comput Assist Tomogr"},{"key":"10.1016\/j.amjsurg.2019.05.013_bib18","series-title":"Presenting Medical Statistics from Proposal to Publication","first-page":"134","author":"Peacock","year":"2017"},{"issue":"6","key":"10.1016\/j.amjsurg.2019.05.013_bib19","doi-asserted-by":"crossref","first-page":"1115","DOI":"10.1016\/j.jpedsurg.2011.03.040","article-title":"Surgeon-performed ultrasound as a diagnostic tool in appendicitis","volume":"46","author":"Burford","year":"2011","journal-title":"J\u00a0Pediatr Surg"},{"issue":"6","key":"10.1016\/j.amjsurg.2019.05.013_bib20","doi-asserted-by":"crossref","first-page":"749","DOI":"10.1097\/00000658-195506000-00001","article-title":"The diminishing mortality from appendicitis","volume":"141","author":"Cantrell","year":"1955","journal-title":"Ann Surg"},{"issue":"4","key":"10.1016\/j.amjsurg.2019.05.013_bib21","first-page":"264","article-title":"Balancing the normal appendectomy rate with the perforated appendicitis rate: implications for quality assurance","volume":"58","author":"Velanovich","year":"1992","journal-title":"Am Surg"},{"key":"10.1016\/j.amjsurg.2019.05.013_bib22","series-title":"Mastery of Surgery","first-page":"1194","article-title":"Appendicitis and appendiceal abscess","author":"Waxman","year":"1992"},{"issue":"6","key":"10.1016\/j.amjsurg.2019.05.013_bib23","doi-asserted-by":"crossref","first-page":"748","DOI":"10.1016\/j.amjsurg.2004.08.044","article-title":"Are negative appendectomies still acceptable?","volume":"188","author":"Jones","year":"2004","journal-title":"Am J Surg"},{"issue":"9","key":"10.1016\/j.amjsurg.2019.05.013_bib24","doi-asserted-by":"crossref","first-page":"972","DOI":"10.1056\/NEJMc0707000","article-title":"Effect of CT on false positive diagnosis of appendicitis and perforation","volume":"358","author":"Raman","year":"2008","journal-title":"N\u00a0Engl J Med"},{"issue":"8","key":"10.1016\/j.amjsurg.2019.05.013_bib25","doi-asserted-by":"crossref","first-page":"2365","DOI":"10.1007\/s00464-014-3963-2","article-title":"Less negative appendectomis due to imaging in patients with suspected appendicitis","volume":"29","author":"Boonstra","year":"2015","journal-title":"Surg Endosc"},{"issue":"5","key":"10.1016\/j.amjsurg.2019.05.013_bib26","doi-asserted-by":"crossref","first-page":"394","DOI":"10.1159\/000180451","article-title":"Impact of time in the development of acute appendicitis","volume":"25","author":"Hansson","year":"2008","journal-title":"Dig Surg"},{"issue":"1","key":"10.1016\/j.amjsurg.2019.05.013_bib27","doi-asserted-by":"crossref","first-page":"65","DOI":"10.1177\/000313481608200126","article-title":"Appendectomy: should it be performed so quickly","volume":"82","author":"Jeon","year":"2016","journal-title":"Am Surg"}],"container-title":["The American Journal of Surgery"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002961019300650?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002961019300650?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,9,12]],"date-time":"2025-09-12T18:19:32Z","timestamp":1757701172000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0002961019300650"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,4]]},"references-count":27,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2020,4]]}},"alternative-id":["S0002961019300650"],"URL":"https:\/\/doi.org\/10.1016\/j.amjsurg.2019.05.013","relation":{},"ISSN":["0002-9610"],"issn-type":[{"value":"0002-9610","type":"print"}],"subject":[],"published":{"date-parts":[[2020,4]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Early ultrasound in acute appendicitis avoids CT in most patients but delays surgery and increases complicated appendicitis if nondiagnostic \u2013 A retrospective study","name":"articletitle","label":"Article Title"},{"value":"The American Journal of Surgery","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.amjsurg.2019.05.013","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2019 Elsevier Inc. All rights reserved.","name":"copyright","label":"Copyright"}]}}