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A Randomized Trial of Invasive Coronary Function Testing in Patients With Angina and Nonobstructive Coronary Artery Disease

Many angina patients have troublesome chest symptoms but are found to have no blockages on their angiogram. This phenomenon is increasingly recognised and may be due to disorders of coronary artery function – microvascular or vasospastic angina. These can be detected by invasively trained cardiologists who can measure microvascular function and perform vasospasm testing. In turn, this helps doctors decide what tablets (if any) are needed by the patient to best improve their outcomes.

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