The Relationship Between Glycated Hemoglobin Levels and In-Stent Restenosis After Percutaneous Coronary Intervention in Patients with Coronary Artery Disease - Report - MDSpire

The Relationship Between Glycated Hemoglobin Levels and In-Stent Restenosis After Percutaneous Coronary Intervention in Patients with Coronary Artery Disease

  • By

  • Yuyang Lei

  • Ping Jin

  • Hui Liu

  • Lin Su

  • Di Wu

  • Chenxi Sun

  • Haoyu Wu

  • Juan Zhou

  • Chen Wang

  • April 23, 2026

  • 0 min

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Clinical Report: Glycated Hemoglobin Levels and In-Stent Restenosis After PCI

Overview

This study investigates the relationship between glycated hemoglobin (HbA1c) levels and the risk of in-stent restenosis (ISR) in patients with coronary artery disease (CAD) following percutaneous coronary intervention (PCI). Higher HbA1c levels were found to be significantly associated with an increased risk of ISR, particularly in patients with HbA1c levels ≥6.5%.

Background

Coronary artery disease (CAD) is a leading cause of morbidity and mortality worldwide, with in-stent restenosis (ISR) representing a significant complication following PCI. Understanding the factors contributing to ISR is crucial for improving patient outcomes and optimizing treatment strategies. Glycated hemoglobin (HbA1c) serves as an important biomarker for glycemic control, and its relationship with ISR risk has not been fully elucidated in CAD patients.

Data Highlights

HbA1c CategoryNumber of PatientsProportion
HbA1c <5.7%91414.51%
HbA1c ≥5.7% to <6.5%278344.20%
HbA1c ≥6.5%260041.29%

Key Findings

  • 1305 individuals (20.72%) were diagnosed with ISR among 6297 CAD patients post-PCI.
  • Higher HbA1c levels were significantly linked to increased ISR risk, with an odds ratio (OR) of 1.18 (95% CI 1.09–1.27, p <0.0001).
  • Patients with HbA1c ≥6.5% had a substantially higher ISR risk (OR: 1.70, 95% CI 1.26–2.29, p =0.0005).
  • A non-linear association was observed between HbA1c levels and ISR risk, with a threshold effect at HbA1c 7.8%.
  • Below the threshold of 7.8%, the association between HbA1c and ISR risk was more pronounced.

Clinical Implications

Clinicians should monitor HbA1c levels in CAD patients undergoing PCI, as higher levels are associated with an increased risk of ISR. Early identification and management of elevated HbA1c may help mitigate ISR risk and improve patient outcomes following PCI.

Conclusion

This study highlights the significant association between elevated HbA1c levels and the risk of ISR in CAD patients after PCI, emphasizing the need for effective glycemic control in this population.

References

  1. Clinical Research in Cardiology, 2020 -- The Role of Platelet Glycoprotein IIb/IIIa Inhibitors in Diabetic Patients Undergoing PCI for Non-ST-Segment Elevation Acute Coronary Syndromes: Influence of Clinical Condition and Procedural Factors
  2. Clinical Research in Cardiology, 2022 -- Myocardial Injury During Procedures Linked to Neointimal Optical Properties and Treatment Approaches for In-Stent Restenosis
  3. Clinical Research in Cardiology, 2023 -- Impact of Aspirin Therapy on Platelet Activity and Restenosis Following Percutaneous Coronary Intervention: Findings from the ISAR-ASPI Registry
  4. 2025 Guideline for Acute Coronary Syndromes - Professional Heart Daily | American Heart Association
  5. Glycemic Control and Coronary Stent Failure in Patients With Type 2 Diabetes Mellitus - PubMed
  6. Clinical Research in Cardiology — Impact of Glycoprotein IIb/IIIa Inhibitors on Hemorrhagic Complications Following Successful Resuscitation and Percutaneous Coronary Intervention
  7. 2025 Guideline for Acute Coronary Syndromes - Professional Heart Daily | American Heart Association
  8. Glycemic Control and Coronary Stent Failure in Patients With Type 2 Diabetes Mellitus - PubMed
  9. Drug-coated balloons versus drug-eluting stents in patients with in-stent restenosis: An updated meta-analysis with trial sequential analysis - PubMed

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