Intracoronary thrombolysis and stentless primary percutaneous coronary intervention in an ectatic right coronary artery with large thrombus burden
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Updated: Nov 26, 2025

Postconditioning with Lactate-enriched Blood for Cardioprotection in ST-segment Elevation Myocardial Infarction
Published on: May 28, 2019
George Kassimis1,2, Petros Faliagkas1, Polykarpos Pshochias2
1Second Cardiology Department, Hippokration Hospital, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece.
Insights
Intracoronary thrombolysis effectively restored blood flow in an ectatic right coronary artery with significant clot burden when thrombectomy failed. This approach offers a safe and effective treatment for ST-segment elevation myocardial infarction patients.
Area of Science:
- Cardiology
- Interventional Cardiology
- Vascular Medicine
Background:
- ST-segment elevation myocardial infarction (STEMI) requires prompt restoration of coronary blood flow.
- Ectatic coronary arteries present unique challenges in managing occlusive thrombus.
- Micro-computed tomography (CT) can quantify thrombus burden in complex coronary anatomy.
Observation:
- A 58-year-old male presented with inferior STEMI due to a mid-vessel occluded right coronary artery (RCA).
- The RCA exhibited ectasia and a significant thrombus burden, confirmed by micro-CT.
- Initial attempts at manual and 'mother-child' thrombectomy were unsuccessful in restoring flow.
Findings:
- Guide catheter-directed intracoronary thrombolysis using low-dose tenekteplase successfully achieved Thrombolysis In Myocardial Infarction (TIMI) 3 flow in the RCA.
- A stentless strategy was employed post-thrombolysis, leaving no angiographically significant stenosis.
- The combined approach proved effective in resolving the occlusion.
Implications:
- Intracoronary thrombolysis is a viable and effective alternative when mechanical thrombectomy fails in STEMI with ectatic arteries and large thrombus.
- A stentless strategy can be safely utilized in selected STEMI cases, potentially reducing procedural complications.
- This case highlights a successful treatment paradigm for complex coronary occlusions in STEMI.
Abstract:
A 58-year-old man was admitted to our center with an inferior ST-segment elevation myocardial infarction. A coronary angiogram showed an ectatic right coronary artery (RCA) occluded at mid vessel by a significant clot burden quantified by micro-computed tomography. Guide catheter-directed intracoronary thrombolysis with low-dose tenekteplase resulted in regaining RCA flow, when numerous efforts of manual and 'mother-child' thrombectomy had failed to achieve. A stentless strategy was followed with final thrombolysis in myocardial infarction 3 flow and angiographically insignificant stenosis remaining in the RCA. The combination of intracoronary thrombolysis and a stentless strategy is a safe and effective treatment in ST-segment elevation myocardial infarction patients with ectatic arteries and large thrombus burden when repeat manual aspiration thrombectomy fails.
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