{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,26]],"date-time":"2026-06-26T21:52:48Z","timestamp":1782510768172,"version":"3.54.5"},"reference-count":8,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2021,7,30]],"date-time":"2021-07-30T00:00:00Z","timestamp":1627603200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2021,7,30]],"date-time":"2021-07-30T00:00:00Z","timestamp":1627603200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","award":["20K17138"],"award-info":[{"award-number":["20K17138"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["BMC Cardiovasc Disord"],"published-print":{"date-parts":[[2021,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec>\n                <jats:title>Background<\/jats:title>\n                <jats:p>The interventional treatment of calcified lesions with severe tortuosity in the left anterior descending artery (LAD) was challenging and the report of rotational atherectomy with mother-and-child technique has been scarce.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Case presentation<\/jats:title>\n                <jats:p>An 84-year-old woman was hospitalized for non-ST-segment acute coronary syndrome. Coronary angiography revealed a calcified nodule in the LAD. During rotational atherectomy of the calcified and tortuous lesion in the proximal LAD, eccentric cutting due to wire bias nearly caused perforation. The burr seemed to protrude from the contrast media during angiography. Intravascular ultrasound imaging revealed that extremely eccentric ablation almost reached the adventitia. We successfully ablated the distal calcified nodule by preventing proximal overcutting of the tortuous lesion with support from a guide extension catheter, i.e., the mother-and-child technique, followed by the deployment of the drug-eluting stent. The patient was discharged without chest symptoms and no symptom recurred during 12-month follow-up.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>This case demonstrated that safe ablation of a calcified nodule located distal to a tortuous and calcified lesion in the proximal LAD with the mother-and-child technique.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12872-021-02167-3","type":"journal-article","created":{"date-parts":[[2021,7,30]],"date-time":"2021-07-30T15:03:24Z","timestamp":1627657404000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["The rotational atherectomy with a guide extension catheter for calcified and tortuous lesions in left anterior descending artery: a case report"],"prefix":"10.1186","volume":"21","author":[{"given":"Taichi","family":"Kato","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2706-4317","authenticated-orcid":false,"given":"Masashi","family":"Fujino","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kensuke","family":"Takagi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Teruo","family":"Noguchi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,7,30]]},"reference":[{"issue":"5","key":"2167_CR1","doi-asserted-by":"publisher","first-page":"e47","DOI":"10.1016\/j.jcin.2015.11.046","volume":"9","author":"P Costanzo","year":"2016","unstructured":"Costanzo P, Aznaouridis K, Hoye A, et al. GuideLiner-facilitated rotational atherectomy in calcified right coronary artery the \u201cChild\u201d Makes the Difference. Jacc Cardiovasc Interventions. 2016;9(5):e47\u20138.","journal-title":"Jacc Cardiovasc Interventions"},{"key":"2167_CR2","doi-asserted-by":"crossref","unstructured":"Ogita M, Suwa S, Sonoda T, et al. Successful rotational atherectomy for an angulated calcified lesion in an anomalous right coronary artery using the \"Mother-and-Child\" Technique. Case Reports Cardiol 2018; 1\u20134.","DOI":"10.1155\/2018\/5927161"},{"issue":"11","key":"2167_CR3","doi-asserted-by":"publisher","first-page":"13","DOI":"10.1016\/j.carrev.2019.03.020","volume":"20","author":"G Latsios","year":"2019","unstructured":"Latsios G, Toutouzas K, Karanasos A, et al. Use of extra deep guide-catheter intubation for rotablation-facilitated percutaneous coronary intervention of the right coronary artery. Cardiovasc Revascularization Med. 2019;20(11):13\u20134.","journal-title":"Cardiovasc Revascularization Med"},{"issue":"2","key":"2167_CR4","doi-asserted-by":"publisher","first-page":"134","DOI":"10.1007\/s12928-013-0232-6","volume":"29","author":"Y Kawase","year":"2014","unstructured":"Kawase Y, Saito N, Watanabe S, et al. Utility of a scoring balloon for a severely calcified lesion: bench test and finite element analysis. Cardiovasc Intervention Ther. 2014;29(2):134\u20139.","journal-title":"Cardiovasc Intervention Ther"},{"issue":"7","key":"2167_CR5","doi-asserted-by":"publisher","first-page":"607","DOI":"10.1016\/j.jcin.2019.01.227","volume":"12","author":"KH Choi","year":"2019","unstructured":"Choi KH, Song YB, Lee JM, et al. Impact of intravascular ultrasound-guided percutaneous coronary intervention on long-term clinical outcomes in patients undergoing complex procedures. Jacc Cardiovasc Interventions. 2019;12(7):607\u201320.","journal-title":"Jacc Cardiovasc Interventions"},{"issue":"5","key":"2167_CR6","doi-asserted-by":"publisher","first-page":"e013678","DOI":"10.1161\/JAHA.119.013678","volume":"9","author":"F Darmoch","year":"2020","unstructured":"Darmoch F, Alraies MC, Al-Khadra Y, et al. Intravascular ultrasound imaging-guided versus coronary angiography-guided percutaneous coronary intervention: a systematic review and meta-analysis. J Am Heart Assoc. 2020;9(5):e013678.","journal-title":"J Am Heart Assoc"},{"issue":"2","key":"2167_CR7","doi-asserted-by":"publisher","first-page":"271","DOI":"10.1002\/ccd.23032","volume":"79","author":"M Cunnington","year":"2012","unstructured":"Cunnington M, Egred M. GuideLiner, a child-in-a-mother catheter for successful retrieval of an entrapped rotablator burr. Catheter Cardio Inte. 2012;79(2):271\u20133.","journal-title":"Catheter Cardio Inte"},{"key":"2167_CR8","doi-asserted-by":"crossref","unstructured":"Kobayashi N, Yamawaki M, Hirano K, et al. Use of the orbital atherectomy system backed up with the guide-extension catheter for a severely tortuous calcified coronary lesion. Sage Open Medical Case Reports 2020; 8: 2050313X20921081.","DOI":"10.1177\/2050313X20921081"}],"container-title":["BMC Cardiovascular Disorders"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s12872-021-02167-3.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1186\/s12872-021-02167-3\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s12872-021-02167-3.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,7,30]],"date-time":"2021-07-30T15:06:20Z","timestamp":1627657580000},"score":1,"resource":{"primary":{"URL":"https:\/\/bmccardiovascdisord.biomedcentral.com\/articles\/10.1186\/s12872-021-02167-3"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,7,30]]},"references-count":8,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2021,12]]}},"alternative-id":["2167"],"URL":"https:\/\/doi.org\/10.1186\/s12872-021-02167-3","relation":{},"ISSN":["1471-2261"],"issn-type":[{"value":"1471-2261","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,7,30]]},"assertion":[{"value":"24 May 2021","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"19 July 2021","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"30 July 2021","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"The study was approved by the institution of National Cerebral and Cardiovascular Center (case report 20-302). The patient gave written consent to participate in the study.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Written informed consent for publication was obtained from the patient.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare that they have no competing interests.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"360"}}