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. 2021 Mar 5;10(5):1083.
doi: 10.3390/jcm10051083.

Association of Neutrophil-Lymphocyte and Platelet-Lymphocyte Ratio with Adverse Events in Endovascular Repair for Abdominal Aortic Aneurysm

Maria P Ntalouka  1 , Petroula Nana  2 , George N Kouvelos  2 , Konstantinos Stamoulis  1 , Konstantinos Spanos  2 , Athanasios Giannoukas  2 , Miltiadis Matsagkas  2 , Eleni Arnaoutoglou  1
Affiliations

Association of Neutrophil-Lymphocyte and Platelet-Lymphocyte Ratio with Adverse Events in Endovascular Repair for Abdominal Aortic Aneurysm

Maria P Ntalouka et al. J Clin Med. .

Abstract

The association of chronic inflammatory markers with the clinical outcome after endovascular aneurysm repair (EVAR) for abdominal aortic aneurysm (AAA) was investigated. We included 230 patients, treated electively with EVAR. The values of neutrophil-lymphocyte ratio (NLR) and platelet-lymphocyte ratio (PLR) were measured pre- and postoperatively. Any major adverse cardiovascular event (MACE) and acute kidney injury (AKI) were recorded. Adverse events occurred in 12 patients (5.2%). Seven patients suffered from MACE and five from AKI. Median NLR and PLR values were significantly increased after the procedure (NLR: from 3.34 to 8.64, p < 0.001 and PLR: from 11.37 to 17.21, p < 0.001). None of the patients or procedure characteristics were associated with the occurrence of either a MACE or AKI. Receiver operating characteristic curve analysis showed that postoperative NLR and PLR were strongly associated with AKI. A threshold postoperative NLR value of 9.9 was associated with the occurrence of AKI, with a sensitivity of 80% and specificity of 81%. A threshold postoperative PLR value of 22.8 was associated with the occurrence of AKI, with a sensitivity of 80% and specificity of 83%. Postoperative NLR and PLR have been associated with the occurrence of AKI after EVAR for AAA.

Keywords: abdominal; acute kidney injury; aortic aneurysm; biomarkers/blood; blood platelets/surgery; endovascular procedures; lymphocyte/surgery.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Receiver operating characteristic curve for NLR and PLR with respect to AKI. NLR: neutrophil–lymphocyte ratio; PLR: platelet–lymphocyte ratio; Preop: preoperative; Postop: postoperative; AKI: acute kidney injury; ROC: receiver operating characteristics.
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