Coronary disease & ACS

Long-term clinical outcomes of intravascular brachytherapy for multilayer drug-eluting in-stent restenosis

EuroInterventionPublished Retrospective cohort study

Main finding · MACE (composite of all-cause death, target lesion revascularisation and myocardial infarction)Result — go to the resultHazard ratio 0.73 95% CI 0.53–0.99

Authors' conclusion

Multilayer DES-ISR is associated with a high rate of adverse outcomes at 3-year follow-up. Treatment with IVBT was associated with a lower rate of MACE compared to treatment with a non-IVBT strategy at long-term follow-up.

Study context

Population
Patients treated for multilayer DES-ISR (≥2 layers) at Mount Sinai Hospital (2012–2019)mean age 66.6±9.9 years, 25.5% female
Participants
647 patients
Exposure
Intravascular brachytherapy (IVBT) vs non-IVBT strategy for multilayer DES-ISR
  • IVBTn = 453
  • non-IVBTn = 194reference
Outcome
MACE:
  • All-cause death
  • Target lesion revascularisation
  • Myocardial infarction
Follow-up
3-year follow-up
Methodological detailspropensity score-adjusted analysis, single-centre (Mount Sinai Hospital)
  • Propensity score-adjusted analysis
  • Single-centre (Mount Sinai Hospital)

Main finding

As reported in the abstract

Hazard ratio

0.73

95% CI 0.53–0.99

P = 0.044

By group

IVBTvs non-IVBT
hazard ratio 0.73 (95% CI 0.53–0.99); P = 0.044

Observational data: associations, not effects.

Further findings

Received a DES · significantly less likely in IVBT group

P < 0.001

Mean

OutcomeIVBTnon-IVBTP value
Mean SYNTAX scoreLower in IVBT group11.9 (SD 10.7)14.2 (SD 11.3)P = 0.028

Individual components of major adverse cardiac events (MACE) · 3-year follow-up

No significant differences between groups

Original publication

Long-term clinical outcomes of intravascular brachytherapy for multilayer drug-eluting in-stent restenosis. EuroIntervention. Published 7 April 2025. doi:10.4244/eij-d-24-00807

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