Vnitr Lek 2021, 67(4):E17-E25 | DOI: 10.36290/vnl.2021.064

Percutaneous coronary intervention of chronic total occlusion - to whom, when and why

Roman Štípal, Martin Poloczek, Marek Sůva, Petr Kala
Interní kardiologická klinika FN Brno a LF MU

Chronic total occlusion is characterised by total discontinuation of a blood flow in coronary vessel present for at least three months. Typical finding involves filling of the distal arterial segments by collateral flow. Well developed collaterals usually provide sufficient supply to preserve myocardial viability, but frequently are not capable of preventing excercise ischemia in the occluded territory. Percutaneous intervention of a CTO is focused on ischemia reduction, improvement of excercise capacity and quality of life. A succesful recanalization of a CTO leads to an improvement of left ventricular systolic function. Patients presenting with acute coronary syndromes and a coincident CTO in non-infarct related artery show worse short and long-term outcomes as compared to patients without a CTO. Technolocigal and procedural evolvement over past decades with implementation of novel techniques used by experienced operators lead to a substantial succes rate imprevement with acceptable complications rate in contemporary CTO interventions.

Keywords: percutaneous coronary intervention, chronic total occlusion, ischemia, viability.

Published: June 29, 2021  Show citation

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Štípal R, Poloczek M, Sůva M, Kala P. Percutaneous coronary intervention of chronic total occlusion - to whom, when and why. Vnitr Lek. 2021;67(4):E17-25. doi: 10.36290/vnl.2021.064.
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