Cardiovascular

Relationship between Endothelial Activation and Stress Index and Coronary Artery Ectasia.

TL;DR

The EASIX score was independently associated with the presence of coronary artery ectasia and demonstrated moderate discriminative ability, with an odds ratio of 2.12 in multivariable logistic regression analysis.

Key Findings

Patients with coronary artery ectasia had significantly higher EASIX scores compared with controls.

  • CAE group EASIX score: 1.46 ± 0.33 vs. control group: 0.98 ± 0.74
  • The difference was statistically significant (p < 0.05)
  • EASIX was calculated using the formula: LDH × Creatinine / Platelet count
  • Study included 150 CAE patients and 150 controls, all of whom underwent coronary angiography

ROC analysis demonstrated moderate discriminative ability of the EASIX score for predicting coronary artery ectasia.

  • AUC = 0.688 (95% CI: 0.618–0.759, p < 0.001)
  • At the optimal cut-off value of EASIX ≥ 0.74, sensitivity was 72% and specificity was 58%
  • The optimal cut-off was determined using the Youden index statistical analysis
  • The discriminative ability was characterized as 'moderate'

EASIX score was identified as an independent predictor of coronary artery ectasia in multivariable logistic regression analysis.

  • Odds ratio = 2.12 (95% CI: 1.35–3.34, p = 0.001)
  • The association remained significant after adjustment for other variables in the multivariable model
  • This finding suggests EASIX reflects endothelial activation and inflammatory stress relevant to CAE pathophysiology

The study was a retrospective case-control analysis of 300 patients who underwent coronary angiography.

  • Data were collected between July 2018 and December 2025
  • 300 total patients: 150 with CAE and 150 controls
  • Patient grouping was based on the presence or absence of CAE on coronary angiography
  • A p-value < 0.05 was considered statistically significant throughout the analysis

What This Means

This research suggests that a blood test score called EASIX — calculated from three routine lab values (LDH, creatinine, and platelet count) — is significantly elevated in patients who have coronary artery ectasia (CAE), a condition where the coronary arteries become abnormally widened rather than narrowed. The study compared 150 CAE patients to 150 patients without the condition, all of whom had undergone coronary angiography, and found that the EASIX score was about 50% higher on average in the CAE group. Statistical analysis confirmed that this association held up even after accounting for other factors, with patients having higher EASIX scores being about twice as likely to have CAE. The EASIX score showed moderate ability to distinguish CAE patients from non-CAE patients, with an AUC of 0.688. At a cut-off value of 0.74, it correctly identified 72% of CAE cases (sensitivity) but only correctly ruled out the condition in 58% of non-CAE patients (specificity), meaning it performs better as a screening tool than a definitive diagnostic test. The researchers believe this score reflects underlying endothelial dysfunction and systemic inflammation, which are thought to play a role in the development of CAE. This research suggests that EASIX — a simple, inexpensive score derived from standard laboratory tests — could potentially serve as an additional tool to help clinicians identify patients at risk for CAE. However, because the study was retrospective and had only moderate discriminative accuracy, further prospective research would be needed to establish its clinical utility more firmly.

Have a question about this study?

Citation

Aydin C, Orta H, Demirkiran A, Emlek N. (2026). Relationship between Endothelial Activation and Stress Index and Coronary Artery Ectasia.. Arquivos brasileiros de cardiologia. https://doi.org/10.36660/abc.20260242