Prognostic value of the stress‐hyperglycaemia ratio in patients with moderate‐to‐severe coronary artery calcification: Insights from a large cohort study

Abstract Aim To evaluate the relationship between the stress‐hyperglycaemia ratio (SHR) and the clinical prognosis of patients with moderate‐to‐severe coronary artery calcification (MSCAC). Methods We consecutively enrolled 3841 patients with angiography‐detected MSCAC. The individuals were categorized into three groups based on SHR tertiles: T1 (SHR ≤ 0.77), T2 (0.77 < SHR ≤ 0.89) and T3 (SHR > 0.89). The SHR value was calculated using the formula SHR = [admission glucose (mmol/L)]/[1.59 × HbA1c (%) − 2.59]. The primary outcomes were major adverse cardiovascular and cerebrovascular events (MACCEs), including all‐cause death, non‐fatal myocardial infarction and non‐fatal stroke. Results During a median follow‐up of 3.11 years, 241 MACCEs were recorded. Kaplan–Meier survival analysis showed that the SHR T3 group had the highest incidence of MACCEs ( P < .001). Moreover, findings from the restricted cubic spline analysis showed a significant and positive association between the SHR and MACCEs. This correlation remained consistent even after considering other variables that could potentially impact the results ( P non‐linear = .794). When comparing SHR T1 with SHR T3, it was found that SHR T3 was significantly associated with an increased risk of the primary outcome (adjusted hazard ratio = 1.50; 95% confidence interval: 1.10‐2.03). Conclusions Patients with MSCAC showed a positive correlation between the SHR and MACCE rate over a 3‐year follow‐up period. The study showed that an SHR value of 0.83 is the key threshold, indicating a poor prognosis. Future large‐scale multicentre investigations should be conducted to determine the predictive value of the SHR in patients with MSCAC.