{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T21:53:21Z","timestamp":1787003601036,"version":"build-2736575974"},"reference-count":15,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2021,6,24]],"date-time":"2021-06-24T00:00:00Z","timestamp":1624492800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2021,6,24]],"date-time":"2021-06-24T00:00:00Z","timestamp":1624492800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Sci Rep"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Recently, coronary angiography (CAG) and percutaneous coronary intervention (PCI) via the distal radial access (DRA), are gaining attention owing to fewer complications. Despite the advantages of the DRA, there is difficulty to initiate this new vascular approach. The data from 1000 patients who underwent CAG and PCI via the DRA by a single experienced radial operator were retrospectively analyzed. The primary outcome was the success rate of the DRA per 100 cases. Moreover, the predictors of the failed DRA were analyzed. Overall, 952 (95.2%) of the total 1,000 patients underwent a successful DRA. After experiencing 200 cases, the DRA success rate was well maintained at\u2009&gt;\u200994%, and there was no difference in success rate per 100 cases (\n                    <jats:italic>P<\/jats:italic>\n                    <jats:sub>trend<\/jats:sub>\n                    \u2009=\u20090.216). The predictors of failure were female sex [odds ratio (OR) 1.84, 95% confidence interval (CI) 1.01\u20133.39,\n                    <jats:italic>P<\/jats:italic>\n                    \u2009=\u20090.049] and systolic blood pressure (SBP) of\u2009&lt;\u2009120\u00a0mmHg (OR 1.87, 95% CI 1.04\u20133.36,\n                    <jats:italic>P<\/jats:italic>\n                    \u2009=\u20090.036). For achieving a stable DRA with the success rate of\u2009&gt;\u200994%, 200 procedures would be needed. Moreover, this new approach could fail in women and patients with low SBP.\n                  <\/jats:p>\n                  <jats:p>\n                    Trial registration:\n                    <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"https:\/\/cris.nih.go.kr\/cris\/index\/index.do\">https:\/\/cris.nih.go.kr\/cris\/index\/index.do<\/jats:ext-link>\n                    (Unique identifier: KCT0005349).\n                  <\/jats:p>","DOI":"10.1038\/s41598-021-92742-7","type":"journal-article","created":{"date-parts":[[2021,6,24]],"date-time":"2021-06-24T06:02:41Z","timestamp":1624514561000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":59,"title":["The learning curve of the distal radial access for coronary intervention"],"prefix":"10.1038","volume":"11","clinical-trial-number":[{"clinical-trial-number":"kct0005349","registry":"10.18810\/cris"}],"author":[{"given":"Ji Woong","family":"Roh","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yongcheol","family":"Kim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Oh-Hyun","family":"Lee","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eui","family":"Im","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Deok-Kyu","family":"Cho","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Donghoon","family":"Choi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Myung Ho","family":"Jeong","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,6,24]]},"reference":[{"key":"92742_CR1","doi-asserted-by":"publisher","first-page":"378","DOI":"10.1016\/j.jcin.2020.10.013","volume":"14","author":"G Eid-Lidt","year":"2021","unstructured":"Eid-Lidt, G. et al. Distal radial artery approach to prevent radial artery occlusion trial. JACC Cardiovasc. Interv. 14, 378\u2013385 (2021).","journal-title":"JACC Cardiovasc. Interv."},{"key":"92742_CR2","doi-asserted-by":"publisher","unstructured":"Roh, J. W., Kim, Y., Kim, H. Y., Ahn, Y. & Jeong, M. H. Comparison of 4-French versus 5-French sheaths for diagnostic coronary angiography via the snuffbox approach. Cardiol. J. https:\/\/doi.org\/10.5603\/CJ.a2020.0003 (2020).","DOI":"10.5603\/CJ.a2020.0003"},{"key":"92742_CR3","doi-asserted-by":"publisher","first-page":"851","DOI":"10.4244\/EIJ-D-17-00079","volume":"13","author":"F Kiemeneij","year":"2017","unstructured":"Kiemeneij, F. Left distal transradial access in the anatomical snuffbox for coronary angiography (ldTRA) and interventions (ldTRI). EuroIntervention 13, 851\u2013857 (2017).","journal-title":"EuroIntervention"},{"key":"92742_CR4","doi-asserted-by":"publisher","first-page":"e995","DOI":"10.4244\/EIJ-D-18-00635","volume":"14","author":"JW Lee","year":"2018","unstructured":"Lee, J. W., Park, S. W., Son, J. W., Ahn, S. G. & Lee, S. H. Real-world experience of the left distal transradial approach for coronary angiography and percutaneous coronary intervention: a prospective observational study (LeDRA). EuroIntervention 14, e995\u2013e1003 (2018).","journal-title":"EuroIntervention"},{"key":"92742_CR5","doi-asserted-by":"publisher","first-page":"1120","DOI":"10.4070\/kcj.2018.0181","volume":"48","author":"Y Kim","year":"2018","unstructured":"Kim, Y. et al. Feasibility of coronary angiography and percutaneous coronary intervention via left snuffbox approach. Korean Circ J. 48, 1120\u20131130 (2018).","journal-title":"Korean Circ J."},{"key":"92742_CR6","first-page":"S51","volume":"36","author":"Y Kim","year":"2021","unstructured":"Kim, Y. et al. Feasibility of primary percutaneous coronary intervention via the distal radial approach in patients with ST-elevation myocardial infarction. Korean J. Intern. Med. 36, S51\u2013S61 (2021).","journal-title":"Korean J. Intern. Med."},{"key":"92742_CR7","doi-asserted-by":"publisher","first-page":"2277","DOI":"10.1161\/CIRCULATIONAHA.113.006356","volume":"129","author":"CN Hess","year":"2014","unstructured":"Hess, C. N. et al. The learning curve for transradial percutaneous coronary intervention among operators in the United States: A study from the National Cardiovascular Data Registry. Circulation 129, 2277\u20132286 (2014).","journal-title":"Circulation"},{"key":"92742_CR8","doi-asserted-by":"publisher","first-page":"185","DOI":"10.1016\/j.amjcard.2011.03.022","volume":"108","author":"A Sciahbasi","year":"2011","unstructured":"Sciahbasi, A. et al. Evaluation of the \u201clearning curve\u201d for left and right radial approach during percutaneous coronary procedures. Am. J. Cardiol. 108, 185\u2013188 (2011).","journal-title":"Am. J. Cardiol."},{"key":"92742_CR9","doi-asserted-by":"publisher","first-page":"195","DOI":"10.1016\/j.carrev.2014.03.001","volume":"15","author":"IM Barbash","year":"2014","unstructured":"Barbash, I. M. et al. Operator learning curve for transradial percutaneous coronary interventions: implications for the initiation of a transradial access program in contemporary US practice. Cardiovasc. Revasc. Med. 15, 195\u2013199 (2014).","journal-title":"Cardiovasc. Revasc. 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