In-stent Restenosis, Intravascular Imaging Device, PCI
Conditions
Keywords
in-stent restenosis, Intravascular imaging device, percutaneous coronary intervention
Brief summary
This study aimed to compare the clinical and angiographic outcomes of patients with DES-ISR who underwent repeat PCI with intravascular imaging or angiographic guidance.
Detailed description
Through early revascularization, percutaneous coronary intervention (PCI) and following pharmacotherapy have improved clinical prognosis among patients with coronary artery disease. However, the presence of stent failure events remained posing long-term risk of adverse cardiac events. Although the utilization of drug-eluting stents (DES), the incidence of in-stent restenosis (ISR) continued to occur at an incidence rate of 1-2% annually. Also, the prognosis of ISR was worse than that in denovo lesions considering its complex mechanisms(stent under-expansion, neointimal hyperplasia or neo-atherosclerosis).Compared with coronary angiography, intravascular imaging(OCT/IVUS) provides detailed anatomical information regarding reference vessel dimensions and lesion characteristics, including severity of diameter stenosis, lesion length, and morphology. Identifying the mechanism of stent failure is paramount because the causative factors will influence the selection of treatment strategy, ultimately impacting the prognosis of the revascularization. However, clinical evidence for the exact benefit of intravascular imaging-guidance for ISR lesions is limited. Therefore, this study aimed to compare the efficacy and safety of intravascular imaging -guided PCI in patients with ISR.
Interventions
PROCEDUREpercutaneous coronary intervention
Percutaneous Coronary Intervention for ISR
Sponsors
Nanjing First Hospital, Nanjing Medical University
Study design
Observational model
COHORT
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
No
Inclusion criteria
(1) Patients with DES-ISR lesions; (2) Life expectancy of at least 1 year; (3) DES-ISR lesions occurring for the first time in native coronary arteries and suitable for re-PCI based on angiographic findings.
Exclusion criteria
(1) Bare-metal stent in-stent restenosis (BMS-ISR). (2) Non-DES-ISR lesions. (3) Incomplete clinical and angiographic data. (4) Poor quality of IVUS or angiographic images. (5) Recurrent DES-ISR. (6) Optical coherence tomography (OCT) guidance.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| MACE | 3-year | Major adverse cardiovascular events following PCI |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Stent expansion | Intraprocedural | defined as the final minimal luminal area (MLA) within the treatment segment divided by the average reference vessel area |
| MSA | Intraprocedural | minimal stent area |
Countries
China
Contacts
Primary ContactFei Ye, MD
Backup ContactYi-fei Wang, MD
Outcome results
None listed