Research Article

Thoracic Paravertebral Nerve Block with Ropivacaine and Adjuvant Dexmedetomidine Produced Longer Analgesia in Patients Undergoing Video-Assisted Thoracoscopic Lobectomy: A Randomized Trial

Figure 2

Postoperative NRS.R. Values in all groups. Values in the PRD group compared to the G group and the PR group at all time points. There was no difference between the G group and PR group ().