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Invasive Assessment of the Coronary Microcirculation in Reperfused ST-Segment-Elevation Myocardial Infarction
Heerajnarain Bulluck1, Nicolas Foin1, Jack W Tan1
1From the Hatter Cardiovascular Institute, Institute of Cardiovascular Science, University College London, United Kingdom (H.B., D.J.H.); The National Institute of Health Research, University College London Hospitals, Biomedical Research Centre, United Kingdom (H.B., D.J.H.); Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore (H.B., N.F., D.J.H.); National Heart Research Institute Singapore, National Heart Centre Singapore (H.B., N.F., J.W.T., D.J.H.); National University Heart Centre, Singapore (A.F.L.); Department of Cardiology, Istanbul University, Istanbul Faculty of Medicine, Çapa, Turkey (M.S.); Barts Heart Centre, St Bartholomew's Hospital, London, United Kingdom (D.J.H.); and Yong Loo Lin School of Medicine, National University Singapore (D.J.H.).
Insights
Predicting microvascular obstruction during primary percutaneous coronary intervention (PPCI) for ST-segment-elevation myocardial infarction can identify high-risk patients. This allows for timely adjuvant therapies to improve outcomes and reduce adverse remodeling.
Area of Science:
- Cardiology
- Interventional Cardiology
- Cardiovascular Research
Background:
- Primary percutaneous coronary intervention (PPCI) is standard for ST-segment-elevation myocardial infarction (STEMI) but microvascular obstruction (MVO) affects 50% of patients, leading to adverse outcomes.
- Detecting MVO hours after PPCI is often too late for intervention, highlighting the need for real-time prediction.
- MVO is linked to poor left ventricular remodeling and worse clinical prognosis post-STEMI.
Purpose of the Study:
- To review invasive methods for assessing coronary microcirculation during PPCI in STEMI patients.
- To explore the potential of these methods for predicting MVO and guiding adjuvant therapies.
- To identify high-risk STEMI patients who may benefit from tailored intracoronary treatments.
Main Methods:
- Review of current invasive coronary physiology techniques for microcirculation assessment.
- Discussion of how these techniques can be applied during PPCI for STEMI.
- Analysis of the link between invasive measurements and MVO development.
Main Results:
- Invasive coronary physiology measurements can assess coronary microcirculation in real-time during PPCI.
- These assessments may predict the development of MVO post-PPCI.
- Early identification of MVO risk can guide timely adjuvant intracoronary therapies.
Conclusions:
- Invasive coronary physiology offers a promising approach to predict MVO during STEMI PPCI.
- Predictive capabilities can enable personalized adjuvant therapies to mitigate MVO.
- This strategy holds potential for improving clinical outcomes in STEMI patients.
Abstract:
For patients presenting with an acute ST-segment-elevation myocardial infarction, the most effective therapy for reducing myocardial infarct size and preserving left ventricular systolic function is primary percutaneous coronary intervention (PPCI). However, mortality and morbidity remain significant. This is partly attributed to the development of microvascular obstruction, which occurs in around 50% of ST-segment-elevation myocardial infarction patients post-PPCI, and it is associated with adverse left ventricular remodeling and worse clinical outcomes. Although microvascular obstruction can be detected by cardiac imaging techniques several hours post-PPCI, it may be too late to intervene at that time. Therefore, being able to predict the development of microvascular obstruction at the time of PPCI may identify high-risk patients who might benefit from further adjuvant intracoronary therapies, such as thrombolysis, vasodilators, glycoprotein IIb/IIIa inhibitors, and anti-inflammatory agents that may reduce microvascular obstruction. Recent studies have shown that invasive coronary physiology measurements performed during PPCI can be used to assess the coronary microcirculation. In this article, we provide an overview of the various invasive methods currently available to assess the coronary microcirculation in the setting of ST-segment-elevation myocardial infarction, and how they could potentially be used in the future for tailoring therapies to those most at risk.
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