We analyzed the neutrophil-to-lymphocyte ratio (NLR) in 1508 patients with PV and found that those with an NLR ≥ 5 were generally older, had a longer disease history, and had higher cardiovascular risk factors, more arterial thrombosis, and more aggressive blood counts, indicating a more proliferative disease. NLR was an accurate predictor of mortality, with patients with NLR ≥ 5 having significantly worse overall survival and more than twice the mortality rate compared to those with NLR < 5. Multivariable models confirmed that increasing age, previous venous thrombosis and NLR ≥ 5 were strong predictors of death, further influenced by cardiovascular risk factors. We examined the interaction between NLR and the number of cardiovascular risk factors and found a progressive trend of increased mortality risk for NLR values ≥ 5 in addition to the presence of more than one risk factor. In conclusion, patients with NLR ≥ 5 require careful monitoring and management of cardiovascular risk factors because they increase mortality when associated with progressive levels of NLR.
我们对1508例真性红细胞增多症患者的中性粒细胞-淋巴细胞比值进行分析,发现NLR≥5的患者通常年龄更大、病程更长,具有更高的心血管风险因素、更多动脉血栓事件及更具侵袭性的血液学指标,提示疾病增殖性更强。NLR是死亡率的准确预测指标:NLR≥5的患者总生存期显著更差,死亡率较NLR<5组高出两倍以上。多变量模型证实,年龄增长、既往静脉血栓史及NLR≥5是死亡的强预测因子,且受心血管风险因素进一步影响。通过考察NLR与心血管风险因素数量的交互作用,发现当NLR≥5且合并超过一个风险因素时,死亡风险呈进行性上升趋势。综上所述,NLR≥5的患者需要严格监测并管理心血管风险因素,因为这些因素会随着NLR水平升高而加剧死亡风险。