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Expert consensus published on use of imaging to guide heart attack treatment

Press releases may be edited for formatting or style
Sophia Antipolis, 21 May 2019: Imaging provides a more precise diagnosis of a heart attack that can be used to individualise treatment. That's the main message of an expert consensus paper published today1 in European Heart Journal, a journal of the European Society of Cardiology (ESC), and presented at EuroPCR in Paris, France.2

Heart attacks are diagnosed and treated using coronary angiography, an invasive procedure which provides an X-ray outline of the arteries supplying blood to the heart. Invasive imaging of the arteries gives more detail but there has been controversy over when to use it.

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This document seeks to resolve that debate. It promotes the adoption of intracoronary imaging in two major areas: 1) acute coronary syndromes including heart attack and 2) when diagnostic information from angiography is unclear.

Which patients and lesions merit imaging? For acute coronary syndromes, advice is given on atypical presentation, complex lesions, and non-obstructive coronary artery disease. The paper provides criteria for assessment of the arteries, interpretation of images, choice of treatment, and guidance during stent insertion (percutaneous coronary intervention; PCI). In the past it was thought that most acute coronary syndromes were caused by ruptured plaque. Intracoronary imaging has identified plaque erosion and eruptive calcified nodules as other causes which may benefit from different treatment. In addition, intracoronary imaging clearly shows thrombus, which angiography may miss or misidentify.

"Imaging is more accurate, helps guide decisions and facilitates tailored therapy, especially in younger heart attack patients who more frequently have plaque erosion or non-atherosclerotic coronary artery disease," said senior author Dr Giulio Guagliumi, of the Ospedale Papa Giovanni XXIII, Bergamo, Italy.

Coronary angiography is often ambiguous during heart attacks which lack an identifiable culprit lesion or have multiple culprit lesions. Intracoronary imaging provides clarity before and during PCI. An ageing population and rising levels of diabetes mean that more lesions causing heart attacks are calcified, which is difficult to detect using angiography and more challenging for PCI. In addition, angiography may be hazy for certain anatomies such as tortuous vessels and aneurysms.

Patients referred for PCI increasingly have comorbidities and complex coronary artery disease. Dr Guagliumi said: "Intracoronary imaging is particularly useful in complex patient and lesion scenarios and the paper states settings where it would provide maximum benefit - for instance patients with non-ST elevation acute coronary syndromes, calcified vessels, long lesions or in-stent restenosis. This ties in with the realities of healthcare, where there is no appetite to spend time and money imaging simple lesions."
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