Pre-incisional Infiltration With Ropivacaine Plus Diprospan for Relieving Postoperative Pain After Thoracoscopic Surgery

Video-assisted thoracoscopic surgery (VATS) is less invasive compared to traditional thoracotomy, but it is still reported that the incidence of acute pain following VATS exceeds 80%. Inadequate postoperative analgesia may trigger a series of adverse physiological stress responses, increase the occurrence of postoperative complications, and affect the rehabilitation process. If acute pain is not managed promptly and sufficiently, nearly one-quarter of patients may develop chronic pain, impacting normal life and sleep quality after discharge. Acute pain after VATS is mainly caused by the release of inflammatory mediators after soft tissue injury at the surgical site, which activates peripheral pain receptors and leads to abnormal action potentials transmitted along A δ and C fibers. Inflammatory mediators released from the soft tissues around incisions not only significantly alters the chemical microenvironment at the peripheral terminals of nociceptors, directly inducing pain, but also sensitizes afferent fibers, contributing to peripheral sensitization. Incisional infiltration is the simplest, safest, and most effective anesthesia method for preventing incision pain after VATS, but even using long-acting local anesthetics, the effectiveness of postoperative analgesia can only last for a relatively short period of time. To improve the efficiency of local incision infiltration in postoperative analgesia, at least two issues need to be addressed: prolonging the duration of ana…

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