Myocardial blood flow assessment with myocardial perfusion scan in patients with coronary artery chronic total occlusion

Jańczyk Magdalena, Samek Ilona, Pachowicz Marcin. Myocardial blood flow assessment with myocardial perfusion scan in patients with coronary artery chronic total occlusion. Journal of Education, Health and Sport. 2020;10(6):275-285. eISSN 2391-8306. DOI http://dx.doi.org/10.12775/JEHS.2020.10.06.030 https://apcz.umk.pl/czasopisma/index.php/JEHS/article/view/JEHS.2020.10.06.030 https://zenodo.org/record/3923161 The journal has had 5 points in Ministry of Science and Higher Education parametric evaluation. § 8. 2) and § 12. 1. 2) 22.02.2019. © The Authors 2020; This article is published with open access at Licensee Open Journal Systems of Nicolaus Copernicus University in Torun, Poland Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author (s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non commercial license Share alike. (http://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited. The authors declare that there is no conflict of interests regarding the publication of this paper. Received: 01.06.2020. Revised: 15.06.2020. Accepted: 30.06.2020. Myocardial blood flow assessment with myocardial perfusion scan in patients with coronary artery chronic total occlusion Magdalena Jańczyk (1), Ilona Samek (1), dr n. med. Marcin Pachowicz (2) 1) Students Scientific Association at the Chair and Department of Nuclear Medicine, Medical University of Lublin 2) Chair and Department of Nuclear Medicine, Medical University of Lublin *Address for correspodence: Smolniki 7/12, 18-520 Stawiski, telephone number: 662237472, e-mail address: magdajanczyk7@gmail.com ORCID ID and e-mail: Magdalena Jańczyk: https://orcid.org/0000-0002-4948-9463; magdajanczyk7@gmail.com Ilona Samek: https://orcid.org/0000-0002-5538-5396; samekilona@gmail.com Marcin Pachowicz: https://orcid.org/0000-0002-0714-2170; marcin.pachowicz.md@gmail.com Abstract Introduction and purpose: Coronary artery disease (CAD) is a leading cardiological problem in modern society. A special form of CAD is the Chronic Total Occlusion (CTO), which affects about 20% of visible coronary artery lesions. The aim of the study is to present the role of myocardial perfusion scintigraphy performed on patients with CTO, and scintigraphic findings in these patients. Material and method: It was a retrospective study. We analized studies in patients with CTO reported in medical history. We included studies performed between 2016 and 2019. 119 cases were found with the majority of men (M = 95, W = 24). The patients’ mean age was 65 years (M = 65, W = 66). In order to assess ischemia in these patients, the stress test was applied by means of physical exercise (cycloerometer) or pharmacological test. If patient's clinical condition did not allow a stress test, only a rest test was performed. Results: In the analyzed group the most common occluded vessel was the right coronary artery (59%). In this case, mean ischaemia was found to cover 18% of the myocardium. The second most frequent obstructed vessel was the circumflex (16%) with ischaemia of 15%. The next artery was left anterior descending artery with ischaemia of 30% and other vessel - 7%. 9 patients had more than one vessel closed. Conclusions: Myocardial perfusion imaging helps to choose optimal treatment in patients with CTO. Key words: heart; scintigraphy; perfusion; CT