Journal of Invasive Cardiology (JIC)Chronic Total Occlusion Percutaneous Coronary Intervention: 2026 Update

Expert centers now achieve technical success rates exceeding 90% in CTO PCI, with consistent symptomatic relief across major registries. Intravascular imaging guidance cut target lesion failure by 7-fold in CTO patients (1.3% vs 13.5%; HR 0.14) versus angiography alone, while a deep learning model predicted procedural success with an AUC of 0.96 using CCTA data.

Clinical Considerations

• Intravascular imaging is no longer optional: across 6 RCTs, IVUS guidance reduced MACE from 13% to 7.2% and target vessel revascularization from 6.7% to 3.1%, with even greater benefit in CTO versus all-comers PCI.
• Retrograde approach carries real risk: in the EuroCTO registry, retrograde cases had 3x higher perforation rates (8.3% vs 2.1%) and nearly 3x higher MACE (3.1% vs 1.2%) versus antegrade, driven largely by lesion complexity.
• Prior CABG patients face compounded challenges: lower technical success (82.1% vs 88.2%), higher perforation (7.0% vs 4.2%), and higher 2-year MACE, though CABG history itself was not independently associated with failure on multivariable analysis.
• Myocardial viability determines TAVR-CTO outcomes: among TAVR patients with concomitant CTO, those supplying non-viable myocardium had significantly higher 30-day and follow-up mortality (p=0.008), underscoring pre-procedural viability assessment.

Practice Applications

• Use intravascular imaging guidance in all CTO PCI cases where wire crossing is achieved; prioritize stent optimization with IVUS to reduce target vessel failure.
• Stratify retrograde cases with J-CTO and PROGRESS-CTO Complications scores; reserve retrograde approach for anatomically complex lesions at experienced centers.
• Assess myocardial viability before CTO PCI in TAVR candidates with concomitant CTO to guide procedural decision-making.
• Target activated clotting time between 200 and 400 seconds; both low and high ACT values independently doubled net adverse cardiovascular events (adjusted OR 2.06).
• Consider same-day discharge for technically successful cases using radial access; 30-day readmission and MACE rates were comparable to overnight-stay patients in contemporary series.

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