Efficacy of ultrasound guided single level thoracic paravertebral block for post-operative analgesia in patients undergoing percutaneous nephrolithotomy: a randomized controlled study

Background: Percutaneous nephrolithotomy (PCNL) is a common surgical method used for the treatment of renal calculi. Post-operative pain due to dilatation capsule, parenchymal tract and peritubal distressing nephrostomy tube. Addition ultrasound guided paravertebral block multimodal postoperative analgesic regimen after general anaesthesia can achieve adequate somatic visceral sensory blockade provide post op cover PCNL. Methods: It was randomized controlled study where 60 ASA I II patients scheduled elective PCNL surgery were divided into 2 groups 30 each, group P N. Both underwent under anaesthesia. After conclusion surgery, given single level at T9-T10 on operated side using 10 ml 0.25% bupivacaine while N did not receive surgery. Results: VAS score, time first rescue analgesic, number analgesics in post-operative period significant compared Conclusions: thoracic para vertebral significantly provides effective analgesia, reduces requirements intravenous opioids, maintains stable hemodynamics, improves respiratory mechanics lowers incidence chronic pain.