{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T15:36:37Z","timestamp":1787758597936,"version":"build-2784847793"},"reference-count":33,"publisher":"BMJ","issue":"8","license":[{"start":{"date-parts":[[2022,8,8]],"date-time":"2022-08-08T00:00:00Z","timestamp":1659916800000},"content-version":"unspecified","delay-in-days":7,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100011699","name":"Siemens Healthineers","doi-asserted-by":"publisher","award":["N\/A"],"award-info":[{"award-number":["N\/A"]}],"id":[{"id":"10.13039\/501100011699","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Open"],"accepted":{"date-parts":[[2022,7,24]]},"published-print":{"date-parts":[[2022,8]]},"abstract":"<jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>Since the safety of coronary CT angiography (CTA) is of great importance, especially with regard to widening indications and increasing morbidity, the aim of this study was to assess influencing factors.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Patients undergoing coronary CTA in a third-generation dual-source CT in a radiological centre were included in a clinical registry. Up to 20\u2009mg metoprolol was administered intravenously to attain a heart rate \u226465\/min. Glyceryl trinitrate (GTN) was administered in doses of 0.8\u2009mg and 0.4\u2009mg. Blood pressure was measured before the administration and after the CTA.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Out of 5500 consecutive patients (3194 men, 62.3 (54.9\u201370.0) years), adverse events occurred in 68 patients (1.2%) with mild anaphylactoid reactions (0.4%), vasovagal symptoms (0.3%) and extravasation (0.3%) being most frequent. Anti-allergic drugs were given in 17 patients, atropine in 3 patients and volume in 1 patient. Drug administration resulted in a significant mean arterial pressure decline (96.0 (88.3\u2013106.0) vs 108.7 (99.7\u2013117.3)\u2009mmHg; p&lt;0.001). Patients who suffered systolic blood pressure drops &gt;20\u2009mmHg or &gt;40\u2009mmHg were older (66.5 (58.6\u201373.3) vs 60.5 (53.6\u201368.3) years; 70.2 (63.3\u201376.5) vs 62.1 (54.7\u201369.6) years), more often male (65.1% vs 54.4%; 68.9% vs 57.3%) and had higher Agatston score equivalents (83.0 (2.0\u2013432.0) vs 15.0 (0.0\u2013172.0); 163.0 (16.3\u2013830.8) vs 25.0 (0.0\u2013220.0); all p&lt;0.001). GTN dose reduction lowered the fraction of patients suffering from blood pressure drops &gt;20\u2009mmHg or &gt;40\u2009mmHg from 34.5% to 27.4% and from 6.1% to 3.5% (both p&lt;0.001), respectively. The proportion of coronary segments with impaired image quality did not differ significantly.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Coronary CTA with intravenous beta-blocker administration is a safe procedure in an outpatient setting as adverse events are rare and mostly mild. Reduced GTN doses can further improve safety by lowering the rate of significant blood pressure drops, which occurred especially in elderly men with increased plaque burden.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Trial registration number<\/jats:title>\n                    <jats:p>\n                      <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"clintrialgov\" xlink:href=\"NCT03815123\">NCT03815123<\/jats:ext-link>\n                      .\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1136\/bmjopen-2021-058304","type":"journal-article","created":{"date-parts":[[2022,8,8]],"date-time":"2022-08-08T12:45:14Z","timestamp":1659962714000},"page":"e058304","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":7,"title":["Factors influencing the safety of outpatient coronary CT angiography: a clinical registry study"],"prefix":"10.1136","volume":"12","clinical-trial-number":[{"clinical-trial-number":"nct03815123","registry":"10.18810\/clinical-trials-gov"}],"author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1428-2611","authenticated-orcid":false,"given":"Florian","family":"Andre","sequence":"first","affiliation":[{"name":"Department of Cardiology, Angiology and Pneumology, Heidelberg University, Heidelberg, Germany"},{"name":"MVZ-DRZ Sinsheim Eberbach Erbach Walldorf Heidelberg, Heidelberg, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Philipp","family":"Fortner","sequence":"additional","affiliation":[{"name":"MVZ-DRZ Sinsheim Eberbach Erbach Walldorf Heidelberg, Heidelberg, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mostafa","family":"Emami","sequence":"additional","affiliation":[{"name":"MVZ-DRZ Sinsheim Eberbach Erbach Walldorf Heidelberg, Heidelberg, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sebastian","family":"Seitz","sequence":"additional","affiliation":[{"name":"MVZ-DRZ Sinsheim Eberbach Erbach Walldorf Heidelberg, Heidelberg, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matthias","family":"Brado","sequence":"additional","affiliation":[{"name":"MVZ-DRZ Sinsheim Eberbach Erbach Walldorf Heidelberg, Heidelberg, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Friedemann","family":"G\u00fcckel","sequence":"additional","affiliation":[{"name":"MVZ-DRZ Sinsheim Eberbach Erbach Walldorf Heidelberg, Heidelberg, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Roman","family":"Sokiranski","sequence":"additional","affiliation":[{"name":"MVZ-DRZ Sinsheim Eberbach Erbach Walldorf Heidelberg, Heidelberg, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andr\u00e9","family":"Sommer","sequence":"additional","affiliation":[{"name":"MVZ-DRZ Sinsheim Eberbach Erbach Walldorf Heidelberg, Heidelberg, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Norbert","family":"Frey","sequence":"additional","affiliation":[{"name":"Department of Cardiology, Angiology and Pneumology, Heidelberg University, Heidelberg, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Johannes","family":"G\u00f6rich","sequence":"additional","affiliation":[{"name":"MVZ-DRZ Sinsheim Eberbach Erbach Walldorf Heidelberg, Heidelberg, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sebastian J","family":"Buss","sequence":"additional","affiliation":[{"name":"MVZ-DRZ Sinsheim Eberbach Erbach Walldorf Heidelberg, Heidelberg, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2022,8,8]]},"reference":[{"key":"2025121512422176000_12.8.e058304.1","doi-asserted-by":"publisher","DOI":"10.1056\/NEJMoa072100"},{"key":"2025121512422176000_12.8.e058304.2","doi-asserted-by":"publisher","DOI":"10.1001\/jama.2012.9624"},{"key":"2025121512422176000_12.8.e058304.3","doi-asserted-by":"publisher","DOI":"10.1016\/j.jacc.2018.10.066"},{"key":"2025121512422176000_12.8.e058304.4","doi-asserted-by":"publisher","DOI":"10.1016\/S0735-1097(19)33019-0"},{"key":"2025121512422176000_12.8.e058304.5","doi-asserted-by":"crossref","unstructured":"Williams MC , Newby DE , Dey D , et al . 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