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Coronary artery stent thrombosis — Clinical Guidelines

Overview

Coronary artery stent thrombosis (CAT) is a serious complication characterized by thrombus formation within a previously implanted stent, often leading to acute coronary syndromes, myocardial infarction, or death 1 6.

Diagnosis

Clinical Presentation: Acute chest pain, ECG changes indicative of ischemia 1 6.

Diagnostic Imaging: Coronary angiography to visualize thrombus within the stent 1 6.

Platelet Function Tests: Assess for resistance to antiplatelet therapy (e.g., clopidogrel, prasugrel) using platelet function assays 1 2 9.

Inflammatory Markers: Elevated levels of Th1, Th17 cells, CXCL16, and homocysteine may indicate increased risk 4.

Management

First-Line Treatment: Immediate administration of antiplatelet therapy (e.g., high-dose clopidogrel in resistant cases) 9.

Thrombolysis: Intracoronary thrombolysis as a rescue therapy when mechanical thrombectomy fails 6.

Adjunctive Therapies: Consider ultrasound thrombolysis for reperfusion 12.

Device-Specific Interventions: Retrieval techniques for fractured stent wires using specialized catheters 3 8.

Special Populations

Elderly Patients: Increased risk of recurrent stent thrombosis; monitor platelet aggregation closely 2.

Comorbidities: Patients with elevated inflammatory markers (Th1, Th17, CXCL16, homocysteine) may require closer surveillance 4.

Key Recommendations

Monitor Platelet Function: Regularly assess platelet function to detect resistance to DAPT, especially in high-risk patients (Evidence: Moderate 1 2 9).

Consider High-Dose Antiplatelet Therapy: For cases of pharmacological resistance, high-dose clopidogrel may be effective (Evidence: Weak 9).

Utilize Advanced Thrombolysis: In cases refractory to mechanical thrombectomy, intracoronary thrombolysis should be considered as a rescue strategy (Evidence: Weak 6).

Retrieve Fractured Stents: Employ specialized retrieval techniques for fractured stent delivery wires to prevent complications (Evidence: Expert opinion 3 8).

References

1 Xian E, Morrison T, Wong J. Hyperacute in-Stent Thrombosis Causing Large Vessel Occlusion after Stent-Assisted Aneurysm Coiling Secondary to Complete Clopidogrel and Prasugrel Resistance: a Case Report. Journal of neurological surgery. Part A, Central European neurosurgery 2024. link 2 Hirano S, Yabe T, Noike R, Amano H, Ikeda T. The Inhibitory Effect of Platelet Aggregation Ability Assessed by the Platelet Aggregatory Threshold Index in a Patient with Recurrent Stent Thrombosis. Internal medicine (Tokyo, Japan) 2024. link 3 Cerejo R, Bain M, Masaryk T. Balloon sandwich technique for retrieval of fractured delivery wire of pipeline stent. Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences 2018. link 4 Tang Y, Wei Y, Ye Z, Qin C. Th1, Th17, CXCL16 and homocysteine elevated after intracranial and cervical stent implantation. The International journal of neuroscience 2017. link 5 Palekar RU, Vemuri C, Marsh JN, Arif B, Wickline SA. Antithrombin nanoparticles inhibit stent thrombosis in ex vivo static and flow models. Journal of vascular surgery 2016. link 6 Karabay CY, Kocabay G, Kalayci A, Tasar O, Kirma C. "Rescue administration" of intracoronary thrombolytic therapy for drug-eluting stent thrombosis. Herz 2014. link 7 Qian J, Yang YJ. Very late thrombosis in a bare metal stent: mechanistic analysis from optical coherence tomography. Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions 2012. link 8 Chen M, Goldstein-Smith L. Endovascular rescue of a misshapen intracranial stent: report of two cases. Journal of neurointerventional surgery 2011. link 9 Cayla G, Macia JC, Roubille F, Rabesendratana H, Piot C, Schved JF et al.. Repeated high doses of clopidogrel in 2 cases of pharmacological resistance. Circulation journal : official journal of the Japanese Circulation Society 2008. link 10 Kos S, Huegli R, Bongartz GM, Jacob AL, Bilecen D. MR-guided endovascular interventions: a comprehensive review on techniques and applications. European radiology 2008. link 11 Blindt R, Stellbrink K, de Taeye A, Müller R, Kiefer P, Yagmur E et al.. The significance of vasodilator-stimulated phosphoprotein for risk stratification of stent thrombosis. Thrombosis and haemostasis 2007. link 12 Rassin T, Desmet W, Piessens J, Rosenschein U. Ultrasound thrombolysis in stent thrombosis. Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions 2000. link51:3<332::aid-ccd22>3.0.co;2-5) 13 Dahl MR, Smead WL, McSweeney TD. Radial artery cannulation: a comparison of 15.2- and 4.45-cm catheters. Journal of clinical monitoring 1992. link

Coronary artery stent thrombosis