Incidence and Outcomes of Chronic Total Occlusion in Acute Coronary Syndrome
DOI:
https://doi.org/10.70749/ijbr.v3i4.2076Keywords:
Chronic total occlusion, acute coronary syndrome, percutaneous coronary intervention, major adverse cardiac events, collateral circulationAbstract
Introduction: Chronic total occlusion (CTO) in acute coronary syndrome (ACS) is a very challenging clinical scenario with a higher risk of adverse outcomes. Hence, its management involves accurate assessments and sophisticated treatment methods. Objectives: To assess the prevalence, presentation, and prognosis of CTO in ACS to understand how percutaneous coronary intervention (PCI) affects patients. Materials and Methods: This study was a retrospective, consecutive, single-center observational analysis carried out in 150 patients with proven ACS who were diagnosed to have CTO at the NICVD Karachi, Pakistan in the duration from January 2024 to December 2024. Demographic data, the initial assessment of suitability for catheter ablation, procedural specifics, and further management were evaluated. A p-value of < 0.05 was used as the level of statistical significance. Results: The mean procedural success rate was 68% for PCI to reduce major adverse cardiac events as compared with more conservative treatment (15% vs 34%) and mortality (7% vs 20%). They noticed that collateral circulation was present in 82% of the patients, which brought down the mortality rates. Conclusion: PCI is associated with meaningful clinical improvement in CTO-ACS patients, but the procedure is technically demanding and requires proper preparation and experienced personnel. Therefore, these multisectoral approaches are crucial for the purpose of ensuring proper management.
Downloads
References
1. Ayad, S.W., El Zawawy, T.H., Lotfy, M.I., Naguib, A.M. and El Amrawy, A.M., 2021. Incidence and impact of totally occluded culprit coronary artery in patients with non-ST segment elevation myocardial infarction acute coronary syndrome. The Egyptian Heart Journal, 73, pp.1-9.
https://doi.org/10.1186/s43044-021-00160-x
2. Strauss, B.H., Knudtson, M.L., Cheema, A.N., Galbraith, P.D., Elbaz-Greener, G., Abuzeid, W., Henning, K.A., Qiu, F. and Wijeysundera, H.C., 2021. Canadian multicenter chronic total occlusion registry: ten-year follow-up results of chronic total occlusion revascularization. Circulation: Cardiovascular Interventions, 14(12), p.e010546.
https://doi.org/10.1161/circinterventions.121.010546
3. Azzalini, L., Carlino, M., Bellini, B., Marini, C., Pazzanese, V., Toscano, E., Gramegna, M., Moscardelli, S., Bognoni, L. and Montorfano, M., 2020. Long-term outcomes of chronic total occlusion recanalization versus percutaneous coronary intervention for complex non-occlusive coronary artery disease. The American journal of cardiology, 125(2), pp.182-188.
https://doi.org/10.1016/j.amjcard.2019.10.034
4. Ybarra, L.F., Rinfret, S., Brilakis, E.S., Karmpaliotis, D., Azzalini, L., Grantham, J.A., Kandzari, D.E., Mashayekhi, K., Spratt, J.C., Wijeysundera, H.C. and Ali, Z.A., 2021. Definitions and clinical trial design principles for coronary artery chronic total occlusion therapies: CTO-ARC consensus recommendations. Circulation, 143(5), pp.479-500.
https://doi.org/10.1161/circulationaha.120.046754
5. Khan, A.A., Khalid, M.F., Ayub, M.T., Murtaza, G., Sardar, R., White, C.J., Mukherjee, D., Nanjundappa, A. and Paul, T.K., 2021. Outcomes of percutaneous coronary intervention versus optimal medical treatment for chronic total occlusion: a comprehensive meta-analysis. Current Problems in Cardiology, 46(3), p.100695.
https://doi.org/10.1016/j.cpcardiol.2020.100695
6. Lee, S.H., Cho, J.Y., Kim, J.S., Lee, H.J., Yang, J.H., Park, J.H., Hong, S.J., Choi, R.K., Choi, S.H., Gwon, H.C. and Lim, D.S., 2020. A comparison of procedural success rate and long-term clinical outcomes between in-stent restenosis chronic total occlusion and de novo chronic total occlusion using multicenter registry data. Clinical Research in Cardiology, 109, pp.628-637.
https://doi.org/10.1007/s00392-019-01550-7
7. Kim, S.H., Behnes, M., Mashayekhi, K., Bufe, A., Meyer-Gessner, M., El-Battrawy, I. and Akin, I., 2021. Prognostic impact of percutaneous coronary intervention of chronic total occlusion in acute and periprocedural myocardial infarction. Journal of Clinical Medicine, 10(2), p.258.
https://doi.org/10.3390/jcm10020258
8. Vemmou, E., Khatri, J., Doing, A.H., Dattilo, P., Toma, C., Sheikh, A., Alaswad, K., Jefferson, B.K., Patel, T.N., Chandwaney, R.H. and Jaffer, F.A., 2020. Impact of Intravascular Ultrasound Utilization for Stent Optimization on 1-Year Outcomes After Chronic Total Occlusion Percutaneous Coronary Intervention. The Journal of invasive cardiology, 32(10), pp.392-399.
https://doi.org/10.25270/jic/20.00141
9. Guo, L., Lv, H.C. and Huang, R.C., 2020. Percutaneous coronary intervention in elderly patients with coronary chronic total occlusions: current evidence and future perspectives. Clinical Interventions in Aging, pp.771-781.
https://doi.org/10.2147/cia.s252318
10. Shoaib, A., Johnson, T.W., Banning, A., Ludman, P., Rashid, M., Potts, J., Kwok, C.S., Kontopantelis, E., Azam, Z.A., Kinnaird, T. and Mamas, M.A., 2020. Clinical outcomes of percutaneous coronary intervention for chronic total occlusion in native coronary arteries vs saphenous vein grafts. J Invasive Cardiol, 32(9), pp.350-357.
https://doi.org/10.25270/jic/20.00180
11. Song, Y., Cui, K., Yang, M., Song, C., Yin, D., Dong, Q., Gao, Y. and Dou, K., 2023. High triglyceride-glucose index and stress hyperglycemia ratio as predictors of adverse cardiac events in patients with coronary chronic total occlusion: a large-scale prospective cohort study. Cardiovascular Diabetology, 22(1), p.180.
https://doi.org/10.1186/s12933-023-01883-8
12. Gao, A., Liu, J., Hu, C., Liu, Y., Zhu, Y., Han, H., Zhou, Y. and Zhao, Y., 2021. Association between the triglyceride glucose index and coronary collateralization in coronary artery disease patients with chronic total occlusion lesions. Lipids in Health and Disease, 20, pp.1-13.
https://doi.org/10.1186/s12944-021-01574-x
13. Lee, S.J., Lee, Y.J., Kim, B.K., Hong, S.J., Ahn, C.M., Kim, J.S., Ko, Y.G., Choi, D., Hong, M.K. and Jang, Y., 2021. Ticagrelor monotherapy versus ticagrelor with aspirin in acute coronary syndrome patients with a high risk of ischemic events. Circulation: Cardiovascular Interventions, 14(8), p.e010812.
https://doi.org/10.1161/circinterventions.121.010812
14. Liu, T., Liu, J., Wu, Z., Lv, Y. and Li, W., 2021. Predictive value of the atherogenic index of plasma for chronic total occlusion before coronary angiography. Clinical Cardiology, 44(4), pp.518-525.
https://doi.org/10.1002/clc.23565
15. Guo, L., Wang, J., Ding, H., Meng, S., Zhang, X., Lv, H., Zhong, L., Wu, J., Xu, J., Zhou, X. and Huang, R., 2020. Long-term outcomes of medical therapy versus successful recanalisation for coronary chronic total occlusions in patients with and without type 2 diabetes mellitus. Cardiovascular Diabetology, 19, pp.1-12.
Downloads
Published
Issue
Section
License
Copyright (c) 2025 Indus Journal of Bioscience Research

This work is licensed under a Creative Commons Attribution 4.0 International License.