Overview Adding Ketamine to Levobupivacaine in Paravertebral Block in Thoracotomy Status: COMPLETED Trial end date: 2024-01-26 Target enrollment: Participant gender: Summary To evaluate the role of adding ketamine to levobupivacaine in PVB on acute and chronic pain in thoracotomyPhase: PHASE4 Details Lead Sponsor: Tanta UniversityTreatments: KetamineLevobupivacaine