Association of Postoperative Neutrophil Lymphocyte Ratio (NLR) and Monocyte Lymphocyte Ratio (MLR) with the Presence of Osteoporosis in Japanese Patients after Hip Fracture Surgery: A Retrospective Cohort Study

Abstract

Background. The diagnosis of osteoporosis is based on bone mineral density measurements expressed as a percentage of the young adult mean (YAM) in Japan. Osteoporosis is defined as YAM <70%, and intervention is recommended at this cutoff. Because osteoporosis has a strong association with systemic metabolic disorders, we postulated that patients with YAM <70% had higher inflammatory biomarker concentrations owing to the higher systemic stress compared with YAM >70%. Method. We retrospectively reviewed 94 patients with low-trauma hip fractures. Blood examinations were performed on postoperative day (POD) 1 and POD 7. We used neutrophil lymphocyte ratio (NLR) and monocyte lymphocyte ratio (MLR) to evaluate postoperative recovery. After dividing the 94 patients into two groups according to a YAM cutoff of 70%, we compared the differences in NLR and MLR. Results. On POD 1, patients with YAM >70% had a median NLR of 5.7 and a median MLR of 0.66, which were significantly lower than for patients with YAM <70% (8.8 and 0.9, respectively). Similarly, on POD 7, patients with YAM >70% had a median NLR of 2.0 and a median MLR of 0.31, which were significantly lower than for patients with YAM <70% (3.5 and 0.43, respectively). Conclusion. A YAM cutoff of 70% is an appropriate intervention threshold regarding postoperative recovery after hip fracture surgery. Mini-Abstract. Patients with YAM >70% showed lower NLR and MLR on POD 1 and POD 7. A YAM cuffoff of 70% is an appropriate intervention threshold regarding postoperative recovery after hip fracture surgery.

Comparing the Prognostic Roles of Red Blood Cell Volume Distribution Width, Neutrophil–Lymphocyte Ratio, and Platelet–Lymphocyte Ratio for Predicting Mortality after Hip Fracture in the Geriatric Population

“…However, despite the prognostic potential of these three markers, few studies have directly compared their accuracy for predicting mortality following hip fracture surgery in the geriatric population. (11)(12)(13) The present study compared the prognostic value of three markers (RDW, NLR, and PLR) as single predictors of mortality following hip fracture surgery in the geriatric population at multiple post-surgery time points (1 month, 3 months, and 1 year). The objective was to produce a valuable clinical reference that can help clinicians prioritize intensive care for older patients with hip fracture who have a high risk of mortality.…”

The Prognostic Significance of Neutrophil to Lymphocyte Ratio (NLR), Monocyte to Lymphocyte Ratio (MLR) and Platelet to Lymphocyte Ratio (PLR) on Long-Term Survival in Off-Pump Coronary Artery Bypass Grafting (OPCAB) Procedures

“…Surgical interventions activate inflammatory system response and may induce a chain of reactions that have an influence on patients’ survival [ 12 , 13 , 14 ]. The utility of aforementioned ratios in surgical interventions was presented in previous studies [ 15 , 16 , 17 , 18 , 19 , 20 , 21 ].…”