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Chinese Journal of Geriatric Orthopaedics and Rehabilitation(Electronic Edition) ›› 2024, Vol. 10 ›› Issue (04): 209-214. doi: 10.3877/cma.j.issn.2096-0263.2024.04.003

• Anesthesia Medicine • Previous Articles    

Effect of dexmedetomidine combined with oxycodone on postoperative cognitive function and analgesic effect in elderly patients undergoing percutaneous endoscopic lumbar discectomy

Qian Zhang1, Wei Tang1,(), Lili Liu1   

  1. 1. Anesthesiology Department of Rongchang District People's Hospital in Chongqing, Chongqing 402460, China
  • Received:2023-10-25 Online:2024-08-05 Published:2024-10-12
  • Contact: Wei Tang

Abstract:

Objective

To investigate the effect of dexmedetomidine combined with oxycodone on postoperative cognitive function and analgesic effect in elderly patients undergoing percutaneous endoscopic lumbar discectomy (PELD).

Methods

A prospective controlled study was conducted. 95 elderly patients with lumbar disc herniation (LDH) who underwent PELD at the hospital from January 2022 to December 2023 were selected as the study subjects. They were divided into the treatment group (48 cases) and the control group (47 cases) using a random number table. The control group was treated with oxycodone plus 0.9% sodium chloride injection before anesthesia induction, while the treatment group was treated with dexmedetomidine combined with oxycodone before anesthesia induction. The two groups were compared on perioperative indicators (dosage of sufentanil, surgery time, awakening time and extubation time), postoperative Mini Mental State Examination (MMSE) score, Pain Visual Analogue Scale (VAS) score, the levels of pain mediators [substance P (SP) and prostaglandin E2 (PGE2)], and adverse reactions.

Results

Repeated measures analysis of variance found that there were statistically significant differences between the treatment group and the control group in terms of MMSE score, VAS score, SP, and PGE2 level at each time point after surgery (P<0.05). There was interaction between the groups and time points. Postoperative MMSE scores of the two groups showed a decreasing trend at first and then an increasing trend (P<0.05). Postoperative VAS scores, SP, and PGE2 levels showed an increasing trend at first and then a decreasing trend (P<0.05).

Conclusion

Applying dexmedetomidine combined with oxycodone in PELD for elderly patients can effectively improve their postoperative cognitive function, reduce postoperative pain, and lower the levels of pain mediators. Besides, it is safe and reliable.

Key words: Dexmedetomidine, Oxycodone, Percutaneous transforaminal endoscopic surgery, Aged, Cognitive function

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