Incidence and predictors of late total occlusion following coronary stenting

Pinak B Shah1, Donald E Cutlip, Jeffrey J Popma

  • 1Cardiovascular Division, St. Elizabeth's Medical Center, Boston, Massachusetts 02135, USA. pinak.shah@tufts.edu

Insights

Total occlusion after coronary stenting is rare (1.6%), often presenting as recurrent angina. Key predictors include stenting for restenosis, longer stent length, and smaller preprocedure lumen diameter.

Area of Science:

  • Cardiovascular Medicine
  • Interventional Cardiology

Background:

  • In-stent restenosis is a significant complication following coronary stenting.
  • Total occlusion represents a severe form of in-stent restenosis with potential adverse outcomes.

Purpose of the Study:

  • To investigate the incidence of total occlusion in stented coronary lesions.
  • To identify independent predictors of total occlusion after coronary stenting.

Main Methods:

  • Analysis of 955 coronary artery lesions from three randomized stent trials and one stent registry.
  • 6-month angiographic follow-up to assess for total occlusion.
  • Statistical analysis including univariate and stepwise multiple logistic regression.

Main Results:

  • The incidence of total occlusion was 1.6% (15/955 lesions).
  • Recurrent angina was the primary presentation (60.0%); no acute ST-segment elevation myocardial infarction was observed.
  • Independent predictors of total occlusion included stenting for restenosis (P=0.004), longer stent length (P<0.001), and smaller preprocedure minimum lumen diameter (P=0.012).

Conclusions:

  • Total occlusion is an infrequent but significant complication of coronary stenting.
  • Specific patient and procedural factors, such as prior restenosis and stent characteristics, predict its occurrence.

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