Effect of ketamine–bupivacaine combination in multilevel ultrasound- assisted thoracic paravertebral block on acute and chronic post-mastectomy pain

Efficacy of adding tramadol as adjunctive analgesic with levobupivacaine in modified pectoral nerve block for modified radical mastectomy surgery

Paravertebral And Epidural Blocks For Post Thoracotomy Pain

Post-thoracotomy pain relief: Thoracic paravertebral block compared with systemic opioids

Role of ketamine and tramadol as adjuncts to bupivacaine 0.5% in paravertebral block for breast surgery: A randomized double-blind study

The effect of intraoperative tramadol on post-operative opioid requirements after laparoscopic sleeve gastrectomy for morbidly obese patients: A retrospective multicentric cohort

Paravertebral Block and Thoracotomy: Review Article

Effect of tramadol as a local anesthetic adjuvant in epidural labor analgesia: Randomized controlled study

Comparative study of analgesic effect of epidural ketamine vs. epidural tramadol in patients undergoing mastectomy under thoracic epidural anesthesia

Effect of preoperative ultrasound-guided thoracic interfacial plane block versus preoperative thoracic erector spinae plane block on acute and chronic pain after modified radical