{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T02:28:59Z","timestamp":1788834539071,"version":"build-2803163510"},"reference-count":26,"publisher":"Springer Science and Business Media LLC","license":[{"start":{"date-parts":[[2026,1,8]],"date-time":"2026-01-08T00:00:00Z","timestamp":1767830400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2026,1,8]],"date-time":"2026-01-08T00:00:00Z","timestamp":1767830400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"name":"Mugla Sitki KocmanUniversity"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Clin Res Cardiol"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Malignant ventricular arrhythmias (MVA)\u2014sustained ventricular tachycardia or fibrillation\u2014remain a major early complication after ST-segment elevation myocardial infarction (STEMI) despite timely reperfusion. The no-reflow phenomenon is a key substrate for arrhythmogenesis. The no-reflow prediction in acute coronary syndrome (NORPACS) score, originally developed to predict no-reflow, may also help identify patients at high arrhythmic risk.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We retrospectively analyzed 1050 consecutive STEMI patients undergoing successful primary percutaneous coronary intervention (PCI) between January 2020 and December 2024. The primary endpoint was inhospital MVA. Univariable and multivariable logistic regression models were constructed incorporating clinical, laboratory, and angiographic variables. The incremental predictive value of the NORPACS score was assessed using receiver operating characteristic analysis, net reclassification improvement (NRI), and integrated discrimination improvement (IDI). Kaplan\u2013Meier and restricted cubic spline analyses evaluated temporal risk patterns.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      MVA occurred in 79 patients (7.5%), all within the first 8-h post-PCI. Patients with MVA more often had diabetes, anterior infarcts, lower LVEF, higher inflammatory markers, and no-reflow. The NORPACS score was significantly higher in the MVA group (7.1\u2009\u00b1\u20091.3 vs. 6.2\u2009\u00b1\u20091.7,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.001) and independently predicted events across all multivariable models (adjusted OR range: 1.20\u20131.44, all\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.05). Adding NORPACS to clinical\u2013laboratory models improved discrimination (\u0394AUC up to 0.07) and yielded significant IDI (0.022\u20130.024) and NRI (0.10\u20130.14). Kaplan\u2013Meier curves confirmed earlier arrhythmia onset with higher scores.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>The NORPACS score is an independent and incremental predictor of early MVA in STEMI patients undergoing PCI. Its integration into clinical\u2013laboratory risk models enhances risk stratification and may guide intensified monitoring in high-risk patients. Prospective multicenter validation is warranted.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Graphical Abstract<\/jats:title>\n                    <jats:p>\n                      This study evaluated the prognostic utility of the NORPACS score for predicting malignant ventricular arrhythmias (VT\/VF) in 1050 patients with STEMI undergoing successful primary PCI. The NORPACS score, incorporating angiographic and clinical parameters such as TIMI flow, vessel diameter, stent length, shock status, and ischemia time, was independently associated with inhospital VT\/VF risk. Higher NORPACS scores were linked to a stepwise increase in arrhythmic events, as demonstrated by ROC, spline, and Kaplan\u2013Meier analyses. The score remained a significant predictor across all multivariable models (adjusted OR range: 1.20\u20131.44, all\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.05).\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s00392-025-02836-9","type":"journal-article","created":{"date-parts":[[2026,1,8]],"date-time":"2026-01-08T11:53:47Z","timestamp":1767873227000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Predictive value of the NORPACS score for malignant ventricular arrhythmias in STEMI patients undergoing primary PCI"],"prefix":"10.1007","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6204-316X","authenticated-orcid":false,"given":"Kamuran","family":"Kalkan","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7193-4324","authenticated-orcid":false,"given":"Veysel Ozan","family":"Tan\u0131k","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4576-5798","authenticated-orcid":false,"given":"Burak","family":"Karde\u015fler","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2620-0305","authenticated-orcid":false,"given":"Etga","family":"K\u00f6pr\u00fcc\u00fc","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"G\u00fclnur","family":"\u00c7olak","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0341-2508","authenticated-orcid":false,"given":"Erdeniz","family":"Eri\u015f","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mustafa","family":"K\u0131rm\u0131z\u0131g\u00fcl","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4007-4621","authenticated-orcid":false,"given":"Hafize Corut","family":"G\u00fczel","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1400-4614","authenticated-orcid":false,"given":"Serdal","family":"Ba\u015ftu\u011f","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5414-8543","authenticated-orcid":false,"given":"Tahir","family":"Durmaz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7111-8450","authenticated-orcid":false,"given":"\u00c7a\u011fatay","family":"Tunca","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5429-1323","authenticated-orcid":false,"given":"B\u00fclent","family":"\u00d6zlek","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,1,8]]},"reference":[{"issue":"40","key":"2836_CR1","doi-asserted-by":"publisher","first-page":"3997","DOI":"10.1093\/eurheartj\/ehac262","volume":"43","author":"K Zeppenfeld","year":"2022","unstructured":"Zeppenfeld K, Tfelt-Hansen J, de Riva M, Winkel BG, Behr ER, Blom NA et al (2022) 2022 ESC guidelines for the management of patients with ventricular arrhythmias and the prevention of sudden cardiac death. 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