Intravenous dexamethasone in pain treatment after video-assisted thoracoscopic surgery.

INTRODUCTION: Video-assisted thoracoscopic surgery (VATS) is a minimally invasive procedure. Despite being less invasive than thoracotomy, post-operative pain remains a significant clinical problem. The aim of this study was to investigate if perioperative intravenous (IV) dexamethasone improves pain management in VATS. METHODS: Thirty-seven patients undergoing VATS with confirmed or suspected lung cancer were enrolled. The first 20 patients received standard care (Group 1) and the following 17 patients received standard care with addition of IV dexamethasone 8 mg (Group 2). The primary outcome was total opioid consumption during the first 24 hours after surgery. RESULTS: The baseline characteristics between groups were comparable. After adjusting for gender and duration of surgery, the median difference of total equianalgesic dose of opioid was 23 mg (p = 0.005). Group 2 had a significantly lower median pain score at rest. The first opioid dose was administered earlier in Group 1: 1.5 hours compared with to 6.9 hours in Group 2 (p = 0.020). Time to full mobilisation was longer in Group 1, with a mean of 12 hours (p = 0.018). CONCLUSION: This study suggests that addition of IV dexamethasone in VATS may reduce the need for opioids and facilitate early mobilisation. FUNDING: The study was funded by the Department of Clinical Medicine, Aalborg University, Aalborg, Denmark TRIAL REGISTRATION. The study is registered with ClinicalTrials.gov (NCT04633850). The study was conducted in accordance with the Declaration of Helsinki and all participants provided written consent.

Neuropathic pain after orthopaedic surgery with continuous peripheral nerve block.

INTRODUCTION: Continuous peripheral nerve blocks (cPNBs) have shown favourable post-operative pain control results but may be associated with a risk for long-term neurological complications. This study sought to examine factors associated with persistent post-operative pain and potential neuropathy after orthopaedic lower-limb surgery with the use of post-operative cPNB. METHODS: Patients who underwent lower limb orthopaedic procedures with cPNBs between November 2021 to May 2022 were included. Patient demographics and perioperative data were noted. At discharge, patients completed the PainDetect (PD) questionnaire and were followed up six months after discharge. RESULTS: Seventy-seven patients with a total of 171 catheters completed the follow up. The median time to follow-up was 214 days after catheter removal, and 18 patients (23%) had a PD score ≥ 13. Univariate analysis showed that multiple variables were associated with a PD score ≥ 13 at the six-month follow-up. Multiple logistic regression showed that a high PD score at discharge, high BMI and longer duration of cPNBs were associated with higher risk of having a PD score ≥ 13 at the six-month follow-up. CONCLUSION: Several factors were associated with a higher risk of having possible neuropathy after six months. BMI, duration of catheter and PD score at discharge were correlated with risk of possible neuropathic pain. FUNDING: None. TRIAL REGISTRATION: The study was a quality control project and therefore did not require registration under Danish law.