Prognostic role of restenosis in 10 004 patients undergoing routine control angiography after coronary stenting

Area of Science:

• Cardiology
• Interventional Cardiology
• Clinical Outcomes Research

Background:

• Routine control angiography is sensitive for detecting restenosis post-coronary stenting.
• The prognostic implications of detected restenosis remain debated.
• Understanding restenosis impact on long-term mortality is crucial for patient management.

Purpose of the Study:

• To investigate the association between restenosis and 4-year mortality.
• To assess the prognostic value of restenosis identified via routine control angiography.
• To evaluate the impact of restenosis on long-term survival after coronary stenting.

Main Methods:

• A cohort study of 10,004 patients undergoing coronary stenting and routine angiography (6-8 months post-procedure).
• Restenosis defined as diameter stenosis ≥50% at follow-up angiography.
• Cox proportional hazards models used to analyze 4-year mortality, adjusting for clinical factors.

Main Results:

• Restenosis was detected in 26.4% of patients (2643/10004).
• Restenosis was independently associated with increased 4-year mortality (adjusted HR: 1.23; P=0.02).
• Age, diabetes, smoking, and reduced ejection fraction also independently predicted mortality.

Conclusions:

• Restenosis identified by routine follow-up angiography is a significant predictor of 4-year mortality after coronary stenting.
• The clinical utility and benefit of routine control angiography require further evaluation in randomized trials.
• These findings underscore the importance of monitoring for restenosis post-stenting.