Abstract
Functional assessment performed during diagnostic coronary angiography has gained an increasing role during the last few decades. Traditional coronary angiography using only anatomical data cannot provide information whether intermediate lesions cause ischaemia or not, and frequently there is no evidence from non-invasive functional tests with appropriate sensitivity and specificity to guide us regarding the localization and severity of ischaemia. Several studies proved the clinical benefit of the use of invasive functional tests. The functional severity of unrevascularized coronary artery disease is correlated with prognosis. It is important to precisely define the lesions causing ischaemia when we plan to improve the blood supply to the heart. The functional assessment of diffuse or serial lesions is not well established. New investigations and methods have been developed such as pullback pressure gradient or instantaneous wave-free ratio intensity besides the well-established and studied functional tests. This could help us find and revascularize the lesions within a coronary vessel primarily responsible for ischaemia and symptoms or, in the case of diffuse disease and no obvious target, to optimize medical therapy. Orv Hetil. 2022; 163(48): 1902-1908.
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