Tag: Microvascular dysfunction

Research

Diagnosis and treatment of patients with ANOCA Consensus document of...

A substantial number of patients undergoing coronary angiography for angina or ischemia in noninvasive tests have coronary arteries without lesions or with nonsignificant stenosis. Many of these patients have nonobstructive myocardial ischemia (INOCA/ANOCA), which is an entity with prognostic importance that significantly affects patients’ quality of life.

The absence of a proper diagnosis leads to inappropriate medical treatment, repeat diagnostic tests, and greater use of social and health resources. An adequate diagnostic strategy is required for individualized treatment that improves symptoms and quality of life.

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Research

Phenotype-based management of coronary microvascular dysfunction

40-70% of patients undergoing invasive coronary angiography with signs and symptoms of ischemia are found to have no obstructive coronary artery disease (INOCA). When this heterogeneous group undergo coronary function testing, approximately two-thirds have demonstrable coronary microvascular dysfunction (CMD), which is independently associated with adverse prognosis.

There are four distinct phenotypes, or subgroups, each with unique pathophysiological mechanisms and responses to therapies. The clinical phenotypes are microvascular angina, vasospastic angina, mixed (microvascular and vasospastic), and non-cardiac symptoms (reclassification as non-INOCA). The Coronary Vasomotor Disorders International Study Group (COVADIS) have proposed standardized criteria for diagnosis.

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Research

Coronary Slow Flow Is Not Diagnostic of Microvascular Dysfunction in...

Guidelines recommend that coronary slow flow phenomenon (CSFP), defined as corrected thrombolysis in myocardial infarction frame count (CTFC) >27, can diagnose coronary microvascular dysfunction (CMD) in patients with angina and nonobstructed coronary arteries.

CSFP has also historically been regarded as a sign of coronary endothelial dysfunction (CED). We sought to validate the utility of CTFC, as a binary classifier of CSFP and as a continuous variable, to diagnose CMD and CED.

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Research

Myocardial ischemia: From disease to syndrome

Although current guidelines on the management of stable coronary artery disease acknowledge that multiple mechanisms may precipitate myocardial ischemia, recommended diagnostic, prognostic and therapeutic algorithms are still focused on obstructive epicardial atherosclerotic lesions, and little progress has been made in identifying management strategies for non-atherosclerotic causes of myocardial ischemia.

The purpose of this consensus paper is three-fold: 1) to marshal scientific evidence that obstructive atherosclerosis can co-exist with other mechanisms of ischemic heart disease (IHD); 2) to explore how the awareness of multiple precipitating mechanisms could impact on pre-test probability, provocative test results and treatment strategies; and 3) to stimulate a more comprehensive approach to chronic myocardial ischemic syndromes, consistent with the new understanding of this condition.

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Around The World

Real Patient Stories

Lynn’s story

I had my first spasm when I was just a young child and continued for almost 50 years with no diagnosis. I always assumed everybody had flushing feelings throughout their body, and hot flashes accompanied by chest pain.

It wasn’t until I was walking my dogs with my sister, one day, and we were going up a steep incline and I couldn’t keep up. I asked her if she felt chest pains when she walked up hills. She looked at me like I was crazy and told me: No!

I then realized something might be wrong with me.

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Don’s story

I consider myself one of the lucky ones.

I was a runner, triathlete, skier, scuba diver, etc. before my problems got severe enough to seek medical help.

Most doctors took my health decline seriously from the start.

Later, it was not uncommon for doctors who were unaware of my athletic endeavours to assume my subsequent lack of fitness was the cause of my condition rather than the result.

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Arthur’s story

My name is Arthur. I am a Scot but have lived in London for nearly forty years.

In 2014, I had my first heart attack. In the following six years, I went to A&E at least twice a year. Every time, I was sent home and was told it was reflux.

My own doctor in about 2015/16 put me on half an angina pill. When I was in hospital, I was told by the cardiology doctors that I did not need it as I never had angina at all.

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