Abstract
Vasoreactivity testing is used by cardiologists in the diagnosis of coronary spasm endotypes, such as epicardial and microvascular spasm. Intracoronary injection of acetylcholine and ergonovine is defined as a standard class I method according to the Coronary Vasomotion Disorder (COVADIS) Group. Because single vasoreactivity testing may have some clinical limitations in detecting the presence of coronary spasm, supplementary or sequential vasoreactivity testing should be reconsidered. The majority of cardiologists do not consider pseudonegative results when performing these vasoreactivity tests. Vasoreactivity testing may have some limitations when it comes to documenting clinical spasm. In the future, cardiologists around the world should use multiple vasoreactivity tests to verify the presence or absence of epicardial and microvascular spasms in the cardiac catheterisation laboratory.
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