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Research Article: The Effect of Low-Dose Esketamine on Postoperative Neurocognitive Dysfunction in Elderly Patients Undergoing General Anesthesia for Gastrointestinal Tumors: A Randomized Controlled Trial

Date Published: 2023-06-29

Introduction:
After surgical anesthesia, postoperative cognitive dysfunction (POCD) is a common central nervous system complication, with the predominant clinical symptom being a reduction in cognitive function (including learning, memory, mood, emotion, and judgment) in patients. POCD often occurs in patients over the age of about yr and has recently been recommended as perioperative neurocognitive disorders (PND). , According to the time of onset, PND includes pre-existing neurocognitive disorders, postoperative delirium…

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