Neutrophil-to-lymphocyte ratio is associated with early cervical shortening after cerclage: a single-center cohort study integrating C-reactive protein - Report - MDSpire

Neutrophil-to-lymphocyte ratio is associated with early cervical shortening after cerclage: a single-center cohort study integrating C-reactive protein

  • By

  • Yuance Xu

  • Linlin Zhang

  • Shuang Guo

  • Guochao Jiang

  • Zheyu Song

  • Jia Song

  • Zongxiang Leng

  • Xingwei Zhang

  • June 18, 2026

  • 0 min

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Association of Neutrophil-to-Lymphocyte Ratio with Early Cervical Shortening Following Cerclage

Overview

This study investigates the correlation between pre-operative neutrophil-to-lymphocyte ratio (NLR) and C-reactive protein (CRP) levels with early cervical shortening post-cerclage. Findings suggest that higher NLR is associated with increased cervical shortening and spontaneous preterm birth rates.

Background

Cervical cerclage is a common intervention for cervical insufficiency, yet a significant percentage of treated pregnancies still result in preterm birth. Understanding the role of systemic inflammation, as indicated by NLR and CRP, may help identify patients at higher risk for adverse outcomes following cerclage.

Data Highlights

MeasureResult
NLR correlation with CL shorteningr = 0.61, p < 0.001
CL shortening per 1-unit increase in NLR0.09 mm/week
PTB before 32 weeks in high-NLR without atosiban60.0%
PTB before 32 weeks in high-NLR with atosiban14.3%
PTB before 32 weeks in low-NLR0%
AUC for combined NLR and CRP predicting large shortening0.81

Key Findings

  • Pre-operative NLR is significantly correlated with cervical length shortening post-cerclage.
  • Each 1-unit increase in NLR corresponds to an additional 0.09 mm/week of cervical shortening.
  • High-NLR women (≥3.5) without atosiban had a 60% rate of preterm birth before 32 weeks.
  • Atosiban use was associated with lower preterm birth rates in high-NLR women.
  • Combined NLR and CRP levels effectively predicted significant cervical shortening.
  • Findings are exploratory and require validation in larger, prospective studies.

Clinical Implications

Clinicians should consider the pre-operative NLR as a potential marker for assessing the risk of cervical shortening and preterm birth in patients undergoing cerclage. However, due to confounding factors, the clinical utility of atosiban in this context remains uncertain and warrants further investigation.

Conclusion

The study highlights the association between systemic inflammatory markers and cervical shortening post-cerclage, emphasizing the need for further research to validate these findings in larger cohorts.

Related Resources & Content

  1. Frontiers in Psychiatry, 2026 -- Clinical correlates and cognitive associations of the neutrophil-to-lymphocyte ratio in first-episode psychosis and at-risk mental states
  2. Determining the Ideal Preoperative Neutrophil–Lymphocyte Ratio Cutoff and Its Impact on Postoperative Outcomes in Colorectal Cancer Patients, 2025
  3. European Journal of Preventive Cardiology -- Inflammation in the spotlight: neutrophil-to-lymphocyte ratio takes centre stage in atherosclerotic cardiovascular disease
  4. Society for Maternal Fetal Medicine Consult Series #70: Management of short cervix in individuals without a history of spontaneous preterm birth - SMFM Publications and Clinical Guidelines
  5. Evaluating the Role of Neoadjuvant Therapy on the Predictive Significance of Preoperative Neutrophil-to-Lymphocyte Ratio in Colorectal Liver Metastases: Findings from a Multi-Center Cohort Analysis
  6. WHO recommendation on tocolytic therapy for improving preterm birth outcomes
  7. Society for Maternal Fetal Medicine Consult Series #70: Management of short cervix in individuals without a history of spontaneous preterm birth - SMFM Publications and Clinical Guidelines
  8. Predictive value of systemic inflammatory indices for perinatal outcomes following cervical cerclage: a retrospective cohort study - PubMed

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