Multiple Culprit Coronary Artery Thrombosis in a Patient with Coronary Ectasia

Area of Science:

• Cardiology
• Interventional Cardiology
• Vascular Biology

Background:

• Coronary ectasia, a condition characterized by abnormal dilation of coronary arteries, presents unique challenges in managing ischemic heart disease.
• Percutaneous coronary angioplasty with bare metal stent implantation is a common intervention for coronary artery disease.
• Very late stent thrombosis (VLST) is a rare but serious complication occurring long after stent placement.

Observation:

• A patient with known coronary ectasia experienced ST-elevation myocardial infarction (STEMI) due to simultaneous acute occlusions in two major coronary arteries.
• The patient had a history of percutaneous coronary angioplasty with bare metal stent implantation in both affected vessels.
• No concomitant embolic sources were identified as a cause for the occlusions.

Findings:

• Simultaneous acute coronary artery occlusions in a patient with coronary ectasia, potentially triggered by very late stent thrombosis in one vessel leading to events in another.
• Aspiration thrombectomy, while not universally proven beneficial in ST-elevation myocardial infarction (STEMI) randomized trials, was highly effective in this specific case.
• The case highlights a potential link between coronary ectasia, chronic inflammation, and heightened platelet activity contributing to plaque disruption and acute coronary events.

Implications:

• This case underscores the complex interplay between coronary ectasia, stent-related complications, and acute myocardial infarction.
• It suggests that aspiration thrombectomy may have a role in select complex ST-elevation myocardial infarction (STEMI) cases, particularly those involving stent thrombosis.
• Further research into the prothrombotic mechanisms associated with coronary ectasia and chronic inflammation is warranted to optimize treatment strategies.