Incidence of early persistent pain after video-assisted thoracoscopic surgery: a single-centre prospective cohort study

Background: Despite the benefits of video-assisted thoracoscopic surgery (VATS), postoperative acute pain and nerve injury are still present and contribute to early persistent and chronic pain. The purpose of this study is to describe the incidence of early persistent pain (EPP) after VATS, which remains unexplored, to enhance patient care and promote awareness among clinicians regarding this clinical condition. Methods: A single-center prospective cohort study that included consecutive patients undergoing VATS between January 2021 and March 2023. The primary outcome was the incidence of EPP, defined as pain experienced at 3 to 4 weeks follow-up. Secondary outcomes were risk factors associated with EPP, characteristics during physical examination, acute postoperative pain scores, the use of additional analgesia and complications between patients with and without EPP. Results: Of 117 patients, 16.2% [95% confidence interval (CI): 9-23%] developed EPP. The presence of acute postoperative pain was the only risk factor for EPP. The pain was mostly localized at the utility and ventral incision. Hyperesthesia, hypoesthesia and a positive pinch test were the most common sensory disturbances. Patients with EPP showed significantly higher acute pain scores until postoperative day (POD) 4, more frequently used additional opioids until POD 2, and had comparable complications. Conclusions: Early persistent postoperative pain is present in 16.2% of patients after VATS. Acute postoperative pain is the strongest risk factor for developing such persistent pain. This underlines that awareness of clinicians for strategies that optimize postoperative pain management is of utmost importance.