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Year : 2018  |  Volume : 21  |  Issue : 10  |  Page : 1337-1340

Effects of thoracic epidural or intravenous analgesia on the neutrophil-to-lymphocyte ratio in thoracotomy cases

1 Department of Anesthesiology and Reanimation, Faculty of Medicine, Gazi University, Ankara, Turkey
2 Department of Thoracic Surgery, Faculty of Medicine, Gazi University, Ankara, Turkey

Correspondence Address:
Dr. M Arslan
Department of Anesthesiology and Reanimation, Faculty of Medicine, Gazi University, Ankara
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/njcp.njcp_106_18

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Background and Purpose: Postoperative pain is a significant problem in thoracotomy patients. Our aim in this study was to investigate the relationship between postoperative pain and neutrophil-to-lymphocyte ratio (NLR) which is a marker of acute inflammatory response. Materials and Methods: Thoracic epidural or intravenous analgesia was administered to thoracotomy patients who elected to undergo a planned surgery. Patients were divided into two groups according to the analgesia method applied postoperatively. Thoracic epidural analgesia was recorded as Group 1 and intravenous analgesia as Group 2. Whole blood counts were recorded from preoperative and postoperative 24th- and 48th-hour routine blood samples, and NLRs were recorded as retrospective file scanning. Postoperative 24th- and 48th-hour NLRs and preoperative NLR values were recorded. Results: Demographic data of the patients included in the study were similar except for age. Preoperative NLR was significantly higher in Group 1 at 3.50 (P = 0.004) than in Group 2 at 2.51. Postoperative NLRs were similar among both groups. Postoperative NLR values at both the 24th- and 48th-hour increased by4.9 times in Group 1 and 9.23 times in Group 2 from the 24th-hour preoperative period, when the preoperative NLRs were evaluated. The rate of increase in Group 1 was significantly lower than in Group 2 (P = 0.006). Conclusion: Postoperative NLR alterations when compared with preoperative values were related to the analgesic regimen used.

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