Coronary Interventions and Diagnostics

Coronary artery disease arises when atherosclerotic plaques narrow or block the vessels supplying the heart muscle, reducing blood flow and raising the risk of heart attack. Percutaneous coronary intervention — threading a catheter to the site of blockage and deploying a small metal scaffold called a stent — offers a less invasive alternative to open-heart surgery for restoring that flow, and drug-eluting stents, which release medication to suppress scar tissue growth, have substantially reduced the rate of re-narrowing. Diagnostic tools such as fractional flow reserve and intravascular ultrasound allow clinicians to measure the functional severity of a narrowing and examine plaque structure in detail, informing decisions about when and how to intervene. Active research continues to wrestle with questions such as which patients benefit from stenting beyond optimal drug therapy alone, how to identify vulnerable plaques before they rupture, and how to minimize the risk of stent thrombosis over the long term.

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Keywords

Coronary StentsMyocardial RevascularizationDrug-Eluting StentsPercutaneous Coronary InterventionAtherosclerosisFractional Flow Reserve