Clinical research in cardiology : official journal of the German Cardiac Society · 2026
Long-term outcomes after percutaneous coronary intervention of in-stent restenosis in patients presenting with acute and chronic coronary syndrome.
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Kuna Constantin, Mayer Marie, Bradaric Christian, Koch Tobias, Presch Antonia, Voll Felix, Kufner Sebastian, Ibrahim Tareq, Schunkert Heribert, Laugwitz Karl-Ludwig, Cassese Salvatore, Kastrati Adnan, Wiebe Jens
Аннотация
BACKGROUND: Limited data are available on long-term outcomes after percutaneous coronary intervention (PCI) of coronary drug-eluting stent (DES) in-stent restenosis (ISR) depending on clinical presentation with acute coronary syndrome (ACS) or chronic coronary syndrome (CCS).
AIMS: Thus, the aim of this observational, retrospective study was to address this lack of evidence.
METHODS: Between January 2007 and February 2021, a total of 3,511 patients with 5,497 ISR lesions were treated at 2 large-volume centers in Munich, Germany, of which 1,029 (29.3%) were treated for ACS. Endpoints of interest were the rates of cardiac death, myocardial infarction (MI), repeat revascularization, and stent thrombosis (ST). Survival was analyzed using the Kaplan-Meier method. Differences between the groups were tested with the log-rank test. Conventional multivariable analysis with adjustment for relevant variables was performed.
RESULTS: After ten years, the rates of cardiac death were 42.5% in patients with ACS and 33.3% in patients with CCS (HR 1.63 [95% CI, 1.41-1.88], p < 0.001). 17.4% of ACS patients and 9.5% of CCS patients experienced MI (HR 2.04 [95% CI, 1.65-2.50], p < 0.001). The rates of ST were 3.6% in patients with ACS and 1.2% in patients with CCS (HR 3.18 [95% CI, 1.92-5.24], p < 0.001). The rates of repeat revascularization of target lesion, target vessel and non-target vessel did not differ significantly between both groups in the long-term.
CONCLUSIONS: In the long-term, the rates of cardiac death, MI and ST after PCI of DES-ISR are significantly higher in ACS patients than in CCS patients.
AIMS: Thus, the aim of this observational, retrospective study was to address this lack of evidence.
METHODS: Between January 2007 and February 2021, a total of 3,511 patients with 5,497 ISR lesions were treated at 2 large-volume centers in Munich, Germany, of which 1,029 (29.3%) were treated for ACS. Endpoints of interest were the rates of cardiac death, myocardial infarction (MI), repeat revascularization, and stent thrombosis (ST). Survival was analyzed using the Kaplan-Meier method. Differences between the groups were tested with the log-rank test. Conventional multivariable analysis with adjustment for relevant variables was performed.
RESULTS: After ten years, the rates of cardiac death were 42.5% in patients with ACS and 33.3% in patients with CCS (HR 1.63 [95% CI, 1.41-1.88], p < 0.001). 17.4% of ACS patients and 9.5% of CCS patients experienced MI (HR 2.04 [95% CI, 1.65-2.50], p < 0.001). The rates of ST were 3.6% in patients with ACS and 1.2% in patients with CCS (HR 3.18 [95% CI, 1.92-5.24], p < 0.001). The rates of repeat revascularization of target lesion, target vessel and non-target vessel did not differ significantly between both groups in the long-term.
CONCLUSIONS: In the long-term, the rates of cardiac death, MI and ST after PCI of DES-ISR are significantly higher in ACS patients than in CCS patients.