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

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

Ketamine versus neostigmine as adjuvants to bupivacaine during ultrasound-guided serratus anterior plane block in modified radical mastectomy. A randomized controlled trial

Effect of different doses of topical ketamine on hemodynamics in patients undergoing modified radical mastectomy

The Effect of Ketamine as Adjuvant in Ultrasonic Guided Supraclavicular Brachial Plexus Block

Effect of adding dexmedetomedine, ketamine and their combination to bupivacaine in thoracic epidural on post-operative analgesia in patients undergoing modified radical mastectomy

Effect of adding magnesium sulphate to bupivacaine on the clinical profile of ultrasound-guided thoracic paravertebral block in patients undergoing modified radical mastectomy

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

Dexmedetomidine versus Ketamine as an Adjuvant in Erector Spinae Block for Perioperative Thoracotomy Pain Control

Effect of Adding Ketamine as An Adjuvant to Lidocaine in Ultrasound Guided Supraclavicular Brachial Plexus Block