{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,4]],"date-time":"2026-08-04T22:54:48Z","timestamp":1785884088302,"version":"3.56.0"},"reference-count":15,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2026,6,1]],"date-time":"2026-06-01T00:00:00Z","timestamp":1780272000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2026,8,5]],"date-time":"2026-08-05T00:00:00Z","timestamp":1785888000000},"content-version":"vor","delay-in-days":65,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Gen Thorac Cardiovasc Surg Cases"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>The Konno procedure is an effective option for performing aortic valve replacement in pediatric patients utilizing an aortoventriculoplasty patch with a right ventricular outflow patch. However, re-do procedures are technically demanding and carry a non-negligible risk of surgical complications when the prosthetic materials are infected. We report a case of a patient who successfully underwent a re-do Konno procedure and an aortic root replacement for prosthetic valve endocarditis involving an aortoventriculoplasty patch.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Case presentation<\/jats:title>\n                    <jats:p>\n                      A 21-year-old male patient had undergone multiple aortic valvular surgeries since childhood. The patient\u2019s subsequent clinical course was complicated by prosthetic valve endocarditis caused by\n                      <jats:italic>Propionibacterium acnes<\/jats:italic>\n                      that occurred at the age of 19\u00a0years, which was treated with antibiotics. Due to the occurrence of a subdural hematoma associated with recurrent endocarditis and exacerbated residual paravalvular leak, the patient was referred to our hospital to receive the appropriate multidisciplinary care throughout the perioperative period. After managing the intracranial hemorrhage, aortic root replacement along with reconstruction of the Konno patch and right ventricular outflow tract was performed using a fresh autologous pericardium. Postoperative echocardiography revealed hemodynamic stability without residual paravalvular leakage. Computed tomography revealed the absence of pseudoaneurysms. The patient was discharged uneventfully after six weeks of antibiotic treatment.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>The re-do Konno procedure and aortic root replacement can be effective surgical options to resolve sustained infection with indwelling prosthetic materials.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s44215-026-00263-4","type":"journal-article","created":{"date-parts":[[2026,6,1]],"date-time":"2026-06-01T04:33:44Z","timestamp":1780288424000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Re-do Konno procedure and aortic root replacement for prosthetic valve endocarditis involving the aorto-ventriculoplasty patch: a case report"],"prefix":"10.1186","volume":"5","author":[{"given":"Hayate","family":"Nomura","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2796-8287","authenticated-orcid":false,"given":"Shintaro","family":"Katahira","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kota","family":"Itagaki","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Koki","family":"Ito","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Goro","family":"Takahashi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kiichiro","family":"Kumagai","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yoshikatsu","family":"Saiki","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,6,1]]},"reference":[{"key":"263_CR1","doi-asserted-by":"publisher","first-page":"909","DOI":"10.1016\/S0022-5223(19)39673-4","volume":"70","author":"S Konno","year":"1975","unstructured":"Konno S, Imai Y, Iida Y, Nakajima M, Tatsuno K. A new method for prosthetic valve replacement in congenital aortic stenosis associated with hypoplasia of the aortic valve ring. J Thorac Cardiovasc Surg. 1975;70:909\u201317.","journal-title":"J Thorac Cardiovasc Surg"},{"key":"263_CR2","doi-asserted-by":"publisher","first-page":"1064","DOI":"10.1016\/j.jtcvs.2006.07.009","volume":"132","author":"RM Suri","year":"2006","unstructured":"Suri RM, Dearani JA, Schaff HV, Danielson GK, Puga FJ. Long-term results of the Konno procedure for complex left ventricular outflow tract obstruction. J Thorac Cardiovasc Surg. 2006;132:1064-1071.e2.","journal-title":"J Thorac Cardiovasc Surg"},{"key":"263_CR3","doi-asserted-by":"publisher","first-page":"37","DOI":"10.1016\/j.ejcts.2008.03.065","volume":"34","author":"T Sakamoto","year":"2008","unstructured":"Sakamoto T, Matsumura G, Kosaka Y, Iwata Y, Yamamoto N, Saito S, et al. Long-term results of Konno procedure for complex left ventricular outflow tract obstruction. Eur J Cardiothorac Surg. 2008;34:37\u201341.","journal-title":"Eur J Cardiothorac Surg"},{"key":"263_CR4","doi-asserted-by":"publisher","first-page":"142","DOI":"10.1177\/2150135120951565","volume":"12","author":"T Shinkawa","year":"2021","unstructured":"Shinkawa T, Nakayama Y, Nishinaka T, Niinami H. Bentall and redo-Konno operation for an adult with aortic paraprosthetic leak and root aneurysm. World J Pediatr Congenit Heart Surg. 2021;12:142\u20134.","journal-title":"World J Pediatr Congenit Heart Surg"},{"key":"263_CR5","unstructured":"Delahaye F, Fol S, C\u00e9lard M, Vandenesch F, Beaune J, Bozio A, et al. Propionibacterium acnes infective endocarditis. Study of 11 cases and review of literature. Arch Mal Coeur Vaiss. 2005;98:1212\u20138."},{"key":"263_CR6","doi-asserted-by":"publisher","first-page":"396","DOI":"10.1016\/j.cmi.2016.12.026","volume":"23","author":"JM Banzon","year":"2017","unstructured":"Banzon JM, Rehm SJ, Gordon SM, Hussain ST, Pettersson GB, Shrestha NK. Propionibacterium acnes endocarditis: a case series. Clin Microbiol Infect. 2017;23:396\u20139.","journal-title":"Clin Microbiol Infect"},{"key":"263_CR7","first-page":"13","volume":"7","author":"TE David","year":"1998","unstructured":"David TE. The use of pericardium in acquired heart disease: a review article. J Heart Valve Dis. 1998;7:13\u20138.","journal-title":"J Heart Valve Dis"},{"key":"263_CR8","doi-asserted-by":"publisher","first-page":"E067","DOI":"10.1532\/hsf.1258","volume":"19","author":"OS Dem\u00efrt\u00fcrk","year":"2016","unstructured":"Dem\u00efrt\u00fcrk OS, Kiziltan HT, Co\u015fkun \u0130, T\u00fcnel HA, Tekin HG. Long-term results of pericardial autologous patch enlargement of the aortic annulus using the Manouguian technique. Heart Surg Forum. 2016;19:E067-073.","journal-title":"Heart Surg Forum"},{"key":"263_CR9","doi-asserted-by":"publisher","first-page":"47","DOI":"10.34172\/jcvtr.2022.06","volume":"14","author":"H Tatari","year":"2022","unstructured":"Tatari H, Omrani G, Arabian M, Mozaffari K, Toloueitabar Y, Asadian S, et al. The fate of the fresh autologous pericardium after right ventricular outflow tract reconstruction. J Cardiovasc Thorac Res. 2022;14:47\u201352.","journal-title":"J Cardiovasc Thorac Res"},{"issue":"2","key":"263_CR10","doi-asserted-by":"publisher","first-page":"209","DOI":"10.1016\/S0022-5223(19)41655-3","volume":"68","author":"Y Kawashima","year":"1974","unstructured":"Kawashima Y, Nakano S, Kato M, Danno M, Sato K. Fate of pericardium utilized for the closure of ventricular septal defect. postoperative ventricular septal aneurysm. J Thorac Cardiovasc Surg. 1974;68(2):209\u201318.","journal-title":"J Thorac Cardiovasc Surg"},{"issue":"4","key":"263_CR11","first-page":"317","volume":"2","author":"G Butera","year":"2001","unstructured":"Butera G, Abella RF, Carminati M. Aneurysmal dilatation of a pericardial patch prepared with glutharaldehyde and used for closure of a ventricular septal defect. Ital Heart J. 2001;2(4):317\u20138.","journal-title":"Ital Heart J"},{"issue":"1","key":"263_CR12","doi-asserted-by":"publisher","first-page":"36","DOI":"10.1016\/j.athoracsur.2019.05.045","volume":"109","author":"RW Quinn","year":"2020","unstructured":"Quinn RW, Wang L, Foster N, et al. Long-term performance of fresh autologous pericardium for mitral valve leaflet repair. Ann Thorac Surg. 2020;109(1):36\u201341.","journal-title":"Ann Thorac Surg"},{"key":"263_CR13","doi-asserted-by":"publisher","first-page":"124","DOI":"10.1186\/s13019-022-01851-5","volume":"17","author":"K Handa","year":"2022","unstructured":"Handa K, Suzuki S, Sakamoto Y, et al. Long-term outcome of extensive mitral valve reconstruction with autologous pericardium and artificial chordae for treatment of destructive active infective endocarditis. J Cardiothorac Surg. 2022;17:124.","journal-title":"J Cardiothorac Surg"},{"key":"263_CR14","doi-asserted-by":"crossref","unstructured":"Doi T, Nagao K, Obi H, Higashida A, Aoki M, Yokoyama S, et al. Application of the Konno procedure for infective endocarditis in native bicuspid aortic valve with annular abscess extending into the interventricular septum. J Surg Case Rep. 2021;2021(9):rjab428.","DOI":"10.1093\/jscr\/rjab428"},{"key":"263_CR15","doi-asserted-by":"publisher","first-page":"1301","DOI":"10.1016\/j.athoracsur.2006.05.001","volume":"82","author":"JW Brown","year":"2006","unstructured":"Brown JW, Ruzmetov M, Vijay P, Rodefeld MD, Turrentine MW. The Ross-Konno procedure in children: outcomes, autograft and allograft function, and reoperations. Ann Thorac Surg. 2006;82:1301\u20136.","journal-title":"Ann Thorac Surg"}],"container-title":["General Thoracic and Cardiovascular Surgery Cases"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/article\/10.1186\/s44215-026-00263-4","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s44215-026-00263-4.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s44215-026-00263-4.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,4]],"date-time":"2026-08-04T22:36:45Z","timestamp":1785883005000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1186\/s44215-026-00263-4"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,6,1]]},"references-count":15,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2026,12]]}},"alternative-id":["263"],"URL":"https:\/\/doi.org\/10.1186\/s44215-026-00263-4","relation":{},"ISSN":["2731-6203"],"issn-type":[{"value":"2731-6203","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,6,1]]},"assertion":[{"value":"13 March 2026","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"6 May 2026","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"1 June 2026","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"This study was approved by the Ethics Committee of Tohoku University Hospital and was performed in accordance with the 1964 Declaration of Helsinki and its later amendments (protocol identification number: 33350).","order":1,"name":"Ethics","label":"Ethics approval and consent to participate","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"The author gained a consensus for publishing this case report on the patient.","order":2,"name":"Ethics","label":"Consent for publication","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"The authors declare that they have no competing interests.","order":3,"name":"Ethics","label":"Competing interests","group":{"name":"EthicsHeading","label":"Declarations"}}],"article-number":"28"}}