High ratio of monocytes to high-density lipoprotein is associated with hemorrhagic transformation in acute ischemic stroke patients on intravenous thrombolysis.

Background: Hemorrhagic transformation (HT) is a frequent, serious complication in acute ischemic stroke patients on intravenous thrombolysis. Here we investigated whether risk of HT is associated with the ratio of monocyte count to high-density lipoprotein level (MHR).

Materials And Methods: Medical records were retrospectively examined for consecutive patients with acute ischemic stroke who received thrombolytic therapy. HT was diagnosed by computed tomography at 24-36 h after therapy. Potential association between MHR and HT was examined using logistic regression.

Results: A total of 340 patients were analyzed, and their median MHR was 0.44 (0.31-0.59). MHR was higher in the 51 patients (15.0%) with HT than in those who did not suffer HT (0.53 vs. 0.42, = 0.001). Multivariate logistic regression showed that, after adjusting for potential confounders, MHR was an independent risk factor for HT (OR 7.50, 95% CI 1.64 to 34.35, = 0.009). Risk of HT was significantly higher among patients whose MHR fell in the third quartile (0.42-0.53) and the fourth quartile (> 0.53) than among those with MHR in the first quartile (< 0.31; OR 3.53, 95% CI 1.11 to 11.20, = 0.032; OR 4.79, 95% CI 1.49 to 15.42, = 0.009).

Conclusion: High MHR may be independently associated with higher risk of HT in patients with acute ischemic stroke on intravenous thrombolysis.