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Emergency Radiology

, Volume 26, Issue 5, pp 515–521 | Cite as

Neutrophil-to-lymphocyte ratio and mesenteric ischemia: can it predict the etiology of mesenteric ischemic at computed tomography?

  • M.A. Rivera Núñez
  • L. Rodríguez Gijón
  • Y. Tung ChenEmail author
  • M. Martí de Gracia
  • G. Buitrago Weiland
  • A. Díez Tascón
Original Article

Abstract

Objectives

To assess the usefulness of the neutrophil-to-lymphocyte ratio (NLR) as a predictive factor of acute mesenteric ischemia (AMI) in patients presenting at the emergency department (ED) with acute abdominal pain.

Methods

This is a retrospective case-control study of patients older than 16 years admitted to the ED with acute abdominal pain with CT and histologic confirmation. The study group corresponded to patients with abdominal CT with radiological signs of AMI. The control group corresponded to patients with non-AMI findings in abdominal CT. Association measurements of NLR with radiological signs were compared with a paired-sample t test, and multivariate regression performed to analyze potential correlations. To assess the diagnosis capacity of NLR, ROC curves were calculated.

Results

A total of 61 patients were included (32 cases and 29 controls). The cases of AMI showed higher mortality (43.8% vs 6.9%, p < 0.01) and higher NLR on the limit of statistical significance (13.8 vs 8.7, p = 0.053). Patients with AMI due to occlusion of the superior mesenteric artery (SMA) showed a higher NLR (8.3 vs 22.3, p < 0.001). The area under the curve (AUC) of the NLR for AMI due to occlusion of the SMA was 0.88 (95% CI 0.7–1.0, p = 0.001). No patient with NLR < 5 presented AMI due to occlusion of the SMA. An NLR of 12.8 showed a sensitivity of 92% and a specificity of 74% for AMI due to occlusion of SMA.

Conclusions

The NLR is a useful parameter of AMI of arterial origin due to occlusion of the SMA; it can help the clinician to raise suspicion of this diagnosis and the interpreting radiologist in the acquisition protocol for the CT study and would alert for an early surgical treatment.

Keywords

Neutrophil-to-lymphocyte ratio (NLR) Acute mesenteric ischemia (AMI) Acute abdominal pain Emergency department (ED) 

Notes

Acknowledgments

We gratefully thank the staff from the Emergency Department of Hospital La Paz for their invaluable support.

Authors’ contribution

All authors have contributed to this work. All authors read and approved the final manuscript.

Funding information

MAPAC—This study is part of a multicenter project on the adequacy of tests with ionizing radiation in the emergency department (projects P13/00896, P13/01183, P16/00296, PI16/01786, P16/01828, P16/00558) that has received funding from the Carlos III Health Institute (State Plan for R + D + i 2013–2016). It has also received partial funding from the CIBER of Epidemiology and Public Health (CIBERESP) and has been cofinanced by the European Regional Development Fund “A way of making Europe,” FEDER.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Disclaimer

We certify that this research was conducted in conformity with ethical principles of our institution. This work, figures and tables, have not been previously published and reproduced from another source

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Copyright information

© American Society of Emergency Radiology 2019

Authors and Affiliations

  1. 1.Department of emergency medicineHospital Universitario de La PazMadridSpain
  2. 2.Department of emergency radiologyHospital Universitario de La PazMadridSpain

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