Tianjin Medical Journal ›› 2026, Vol. 54 ›› Issue (8): 815-820.doi: 10.11958/20253353

• Clinical Research • Previous Articles     Next Articles

The predictive value of sublingual microcirculation combined with ROX-HR index for the prognosis of patients with septic shock

LI Rong(), CHEN Yan()   

  1. Department of Respiratory Medicine, Nanchong Hospital & Nanchong Central Hospital, Beijing Anzhen Hospital Affiliated to Capital Medical University, Nanchong 637000, China
  • Received:2025-11-14 Revised:2026-01-21 Published:2026-08-15 Online:2026-08-07
  • Contact: △E-mail: 455784543@qq.com

Abstract:

Objective To investigate the predictive value of combining dynamic monitoring of the change rate of sublingual microcirculation perfusion vessel proportion (ΔPPV) and the respiratory rate-oxygenation-heart rate (ROX-HR) index for 28-day prognosis in patients with septic shock during early fluid resuscitation. Methods A retrospective analysis was conducted on clinical data from 150 patients with septic shock who received early fluid resuscitation in our hospital from August 2020 to September 2024. According to the 28-day outcome after treatment, patients were divided into the survival group (n=103) and the death group (n=47). Baseline data, ΔPPV at 6 h, 24 h and 72 h, and the lowest ROX-HR index within 2 h after admission were compared between the two groups. Logistic regression model was used to identify the independent predictive factors influencing 28-day mortality of sepsis. The receiver operating characteristic (ROC) curves were used to evaluate the predictive value of ΔPPV and the ROX-HR index for the 28-day prognosis of patients with sepsis. Results Acute physiology and chronic health (APACHE) Ⅱ score, sequential organ failure assessment (SOFA) score, lactate, IL-6 and IL-10 were significantly higher in the death group than those in the survival group (P<0.05), whereas Glasgow coma scale (GCS), ROX-HR index, 6 hΔPPV, 24 hΔPPV and 72 hΔPPV were significantly lower (P<0.05). The maximum dose of norepinephrine in the first 72 h was higher, the duration of usage time was longer and the proportion of fungal infection was also higher in the death group than those in the survival group (P<0.05). Multivariate Logistic regression analysis showed that increased SOFA score and lactate, decreased ROX-HR index and ΔPPV at 72 h were risk factors for poor prognosis in patients with septic shock after 28 days of treatment (P<0.05). Area under the curves (AUCs) of SOFA score, lactate, ROX-HR index and 72 hΔPPV for predicting prognosis were 0.806 (95%CI: 0.734-0.866), 0.757 (95%CI: 0.681-0.823), 0.885 (95%CI: 0.823-0.932) and 0.890 (95%CI: 0.828-0.935), with sensitivities of 97.87%, 87.23%, 95.74% and 85.11%, and specificities of 59.22%, 55.34%, 76.70% and 80.58%, respectively. The combined model (SOFA score+lactate+ROX-HR index+72 hΔPPV) achieved an AUC of 0.989 (95%CI: 0.956-0.999), with a sensitivity of 91.49% and a specificity of 98.06%. Conclusion Dynamic monitoring of ΔPPV, ROX-HR index combined with SOFA score and lactate shows superior predictive value for the early prognosis in septic shock.

Key words: sepsis, shock, prognosis, resuscitation, change rate of proportion of sublingual microcirculation perfusion vessel, ROX-HR index

CLC Number: