Effect of TPVB on Postoperative Pain and Cognitive Function After VATS in Elderly Patients

Patients undergoing thoracoscopic surgery underwent general anesthesia.MMSE and MoCA were assessed at one day before surgery, one day after surgery, and three months after surgery

"The patient was placed in lateral supine position, and the T5 spinous process was moved 2 to 3 cm laterally to the operative side as the puncture point, and the pleura and T5 transverse process were observed, and the paraspinal space was observed on the lower lateral side of the transverse process. Using in-plane technique, the needle position was adjusted under ultrasound visualization to reach the paraspinal space. 20ml 0.375% ropivacaine was injected into the suction syringe when there was no blood or gas, and the drug liquid could be seen spreading outside the pleura. Landscape sign appeared, indicating successful block"

Participants were assessed for MMSE and MoCA at the same period as the group C