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Here, we aimed to investigate the safety of task sharing with clinical engineers (CEs) working as 1st assistant during ad hoc PCI. We retrospectively included 286 patients who underwent ad hoc PCI following diagnostic catheterization for coronary artery disease between April 2019 and March 2021. Procedural complications including coronary perforation or rupture, myocardial infarction, cerebral embolism, cardiovascular death, decreased kidney function, and radiation parameters were compared between the two clinical settings [CE group, CEs as the 1st assistant from the beginning of diagnostic coronary angiography to the end of PCI vs. doctor (DR) group, others]. There was no increase in the ratio of procedural complications in the CE group (1.7%) versus the DR group (1.2%). Fluorescence time and radiation exposure dose were significantly reduced in the CE group {25\u00a0min [interquartile range (IQR), 19\u201335\u00a0min] vs. 28\u00a0min (IQR, 20\u201339\u00a0min), <jats:italic>P<\/jats:italic>\u2009=\u20090.036; 908\u00a0mGy (IQR, 654\u20131326\u00a0mGy) vs. 1062\u00a0mGy (IQR, 732\u20131594\u00a0mGy), <jats:italic>P<\/jats:italic>\u2009=\u20090.049}. The median amount of contrast medium was significantly reduced in the CE group [100\u00a0mL (IQR, 80\u2013119\u00a0mL) vs. 110\u00a0mL (IQR 90\u2013140\u00a0mL), <jats:italic>P<\/jats:italic>\u2009&lt;\u20090.001]. After propensity matching, fluorescence time, radiation exposure dose, and contrast medium amount were similar between groups. Task sharing with CEs as the 1st assistant during ad hoc PCI could contribute to clinical safety in patients with coronary artery disease.<\/jats:p>","DOI":"10.1007\/s12928-022-00884-w","type":"journal-article","created":{"date-parts":[[2022,8,9]],"date-time":"2022-08-09T08:02:38Z","timestamp":1660032158000},"page":"96-103","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Safety of clinical engineer-assisted percutaneous coronary intervention"],"prefix":"10.1007","volume":"38","author":[{"given":"Mitsutoshi","family":"Oguri","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hideki","family":"Ishii","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takuro","family":"Shigematsu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rin","family":"Fujita","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuichiro","family":"Koyama","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takeshi","family":"Katagiri","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yoshihiro","family":"Ikai","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yusuke","family":"Fujikawa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hiroshi","family":"Takahashi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yoriyasu","family":"Suzuki","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Toyoaki","family":"Murohara","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2022,8,9]]},"reference":[{"key":"884_CR1","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1007\/s12928-021-00829-9","volume":"37","author":"Y Ozaki","year":"2022","unstructured":"Ozaki Y, Hara H, Onuma Y, Katagiri Y, Amano T, Kobayashi Y, et al. 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