The neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) levels following erector spinae plane block (ESPB) in posterior lumbar decompression: a randomized, controlled trial

Abstract

Purpose Neutrophile-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) are the inflammatory biomarkers of the stress response. In this study, we aimed to evaluate the effects of erector spinae plane block (ESPB) on posterior lumbar decompression and stabilization by comparing NLR, PLR, postoperative pain, opioid consumption, and functional recovery between sham block and ESPB. Methods This was a prospective, double-blinded, randomized controlled trial in a tertiary referral hospital. Sixty patients were randomized into two equal groups, each receiving either a sham block or ESPB. The primary outcome was the NLR and PLR 12 h and 24 h after lumbar posterior decompression and stabilization. The secondary outcomes were total opioid consumption and pain score 24 h postoperatively. Also, functional recovery determined by getting out of bed, verticalization, and walking by the balcony were reviewed as secondary outcomes. Results Significant differences existed between the sham block and ESPB group in NLR (29.08 ± 12.29 vs. 16.97 ± 10.38; p < 0.0001) and PLR (556.77 ± 110.32 vs. 346.43 ± 117.34; p < 0.0001) 12 h after surgery. Also, there was a significant difference in NLR (p = 0.0466) and PLR (p < 0.0001) 24 h after surgery. In addition, there was a substantial difference in pain score, total opioid consumption, and functional recovery. Conclusion ESPB performance during spinal surgery lowers NRL and PLR ratios 12 h and 24 h after surgery. In addition, ESPB provides better analgesia and improves functional recovery compared to sham block following posterior lumbar decompression and stabilization.

Neutrophils and Anesthetic Drugs: Implications in Onco-Anesthesia

“…lidocaine at 24 h after colorectal surgery [137]. An erector spinae plane block (ESPB) significantly decreased the NLR after spine surgery [138]. The impact of the influence of anesthetic agents on the NLR for patient outcomes still needs to be determined via future RCTs studying long-term outcomes.…”

Pain Management, Functional Recovery, and Stress Response Expressed by NLR and PLR after the iPACK Block Combined with Adductor Canal Block for Total Knee Arthroplasty—A Prospective, Randomised, Double-Blinded Clinical Trial

“…The neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) are extensively used in many branches of medicine as prompt markers of immune replay to different noninfectious stimuli [11,12]. Recently, it has been proved that regional anaesthesia reduces stress response expressed by NLR and PLR [13][14][15]. However, to date, no studies have been conducted to assess the outcomes of peripheral nerve block on NLR and PLR in knee surgery.…”