Fig. 6From: Comparison of the analgesic effect of ultrasound-guided paravertebral block and ultrasound-guided retrolaminar block in Uniportal video-assisted Thoracoscopic surgery: a prospective, randomized studyPostoperative pain severity NRS score during coughing (in cm) at 3, 6, 12, 24, 36 and 48 h postoperatively. P, paravertebral block; R, retrolaminar block; NRS, numerical rating scale. *P < 0.05Back to article page