The aim of the study is to investigate the analgesic effects of the subcutaneous wound infiltration with tramadol, ketamine, dexamethasone, dexmedetomidine and midazolam as adjuvant to ropivacaine, compared to ropivacaine alone in patients undergoing Video-Assisted thoracoscopic Surgery (VATS) procedures.
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Time to the first postoperative analgesia requirement
Timeframe: Follow till 24 hours postoperatively
Visual analogue scale (VAS)
Timeframe: Follow till 24 hours postoperatively