The relationship between post-procedural platelet count and left ventricular aneurysm in patients with acute anterior ST-segment elevation myocardial infarction following primary percutaneous coronary intervention.

BACKGROUND: Left ventricular aneurysm (LVA) relates to worse prognosis in patients with myocardial infarction despite successful reperfusion treatment. There is no evidence that early detectable biomarkers can predict the risk for the future development of LVA.

AIM: The aim of our study was to investigate the possible predictive value of periprocedural haematological parameters for LVA.

METHODS: A total of 281 patients with acute anterior ST-segment elevation myocardial infarction (STEMI) who underwent primary percutaneous coronary intervention (pPCI) were enrolled. Haematological parameters were measured on admission before pPCI and between 8 and 12 h after pPCI, separately. The development of LVA was evaluated at one-year follow-up. The patients were then divided into two groups: an LVA group and a non-LVA group. Univariate and multivariate logistic regression analyses were performed to find the predictors of LVA.

RESULTS: A total of 34 (12.1%) patients developed LVA at one-year follow-up after pPCI. Multivariate analyses revealed that a 10 × 109/L increase in platelet count 12 h after pPCI (odds ratio [OR] 1.092, 95% confidence interval [CI] 1.015-1.188, p = 0.039), peak cardiac troponin I (OR 1.107, 95% CI 1.003-1.215, p = 0.000), and left ventricular ejection fraction (OR 0.853, 95% CI 0.772-0.943, p = 0.002) were independent risk factors for LVA. For the prediction of LVA, platelet count 12 h after pPCI at a cut-off value > 197 × 109/L yielded a receiver operating characteristic-area under the curve (ROC-AUC) of 0.635 (82.3% sensitivity, 44.1% specificity).

CONCLUSIONS: Platelet count after pPCI was significantly associated with the development of LVA in anterior STEMI patients and may be available for early risk stratification of future LVA formation.