Monocyte to high‐density lipoprotein ratio at hospital admission predicts intrahospital mortality in patients with Stanford type‐A dissection

Background Immune inflammatory mechanisms have crucial roles not only in the presence but also in the progression of aortic dissection (AD). Monocyte count to high‐density lipoprotein ratio (MHR) has recently emerged as an indicator of inflammation and oxidative stress. Thus, we aimed to examine the prognostic value of MHR in patients with AD. Methods A total of 204 consecutive patients with Stanford type‐A dissection who managed surgically were retrospectively enrolled in the present study. Recruited patients were divided into two groups according to the occurrence of intrahospital death; Group 1 consisted of 165 patients who were discharged alive, and Group 2 consisted of 39 patients who died during index hospitalization. Two groups were compared with respect to baseline clinical data and admission laboratory parameters including MHR. Results The mean age of the Group 1 was 55.2 ± 12.3 years, while the mean age of the Group 2 was 60.6 ± 10.8 years (p = .012). The patients who were discharged alive (Group 1) had significantly lower MHR than the deceased patients (Group 2) (0.02099 ± 0.00140 vs. 0.02848 ± 0.01513, p = .004). At receiver operating characteristics curve analysis, MHR = 0.020699 had 67% sensitivity and 59% specificity in predicting intrahospital mortality among patients with AD. In multivariate analysis, MHR was found to be an independent risk factor of intrahospital mortality among those (β = 1.094, p = .011). Conclusion MHR is an inexpensive and easily calculated biomarker, which is useful to predict intrahospital mortality in patients with Stanford type‐A dissection who managed surgically.