Clinical Orthopaedics and Related Research®

, Volume 472, Issue 5, pp 1453–1466

The Influence of Anesthesia and Pain Management on Cognitive Dysfunction After Joint Arthroplasty: A Systematic Review

Authors

    • Division of Orthopaedic Surgery, Toronto Western HospitalUniversity of Toronto
  • Atul Prabhu
    • Department of Anesthesia, Toronto Western HospitalUniversity of Toronto
  • Anthony V. Perruccio
    • Division of Orthopaedic Surgery, Toronto Western HospitalUniversity of Toronto
    • Institute of Health Policy, Management & EvaluationUniversity of Toronto
  • Rajiv Gandhi
    • Division of Orthopaedic Surgery, Toronto Western HospitalUniversity of Toronto
Symposium: Perioperative Pain Management in Orthopaedic Surgery

DOI: 10.1007/s11999-013-3363-2

Cite this article as:
Zywiel, M.G., Prabhu, A., Perruccio, A.V. et al. Clin Orthop Relat Res (2014) 472: 1453. doi:10.1007/s11999-013-3363-2

Abstract

Background

Despite the overall success of total joint arthroplasty, patients undergoing this procedure remain susceptible to cognitive decline and/or delirium, collectively termed postoperative cognitive dysfunction. However, no consensus exists as to whether general or regional anesthesia results in a lower likelihood that a patient may experience this complication, and controversy surrounds the role of pain management strategies to minimize the incidence of postoperative cognitive dysfunction.

Questions/purposes

We systematically reviewed the English-language literature to assess the influence of the following anesthetic and/or pain management strategies on the risk for postoperative cognitive dysfunction in patients undergoing elective joint arthroplasty: (1) general versus regional anesthesia, (2) different parenteral, neuraxial, or inhaled agents within a given type of anesthetic (general or regional), (3) multimodal anesthetic techniques, and (4) different postoperative pain management regimens.

Methods

A systematic search was performed of the MEDLINE® and EMBASE™ databases to identify all studies that assessed the influence of anesthetic and/or pain management strategies on the risk for postoperative cognitive dysfunction after elective joint arthroplasty. Twenty-eight studies were included in the final review, of which 21 (75%) were randomized controlled (Level I) trials, two (7%) were prospective comparative (Level II) studies, two (7%) used a case-control (Level III) design, and three (11%) used retrospective comparative (Level III) methodology.

Results

The evidence published to date suggests that general anesthesia may be associated with increased risk of early postoperative cognitive dysfunction in the early postoperative period as compared to regional anesthesia, although this effect was not seen beyond 7 days. Optimization of depth of general anesthesia with comprehensive intraoperative cerebral monitoring may be beneficial, although evidence is equivocal. Multimodal anesthesia protocols have not been definitively demonstrated to reduce the incidence of postoperative cognitive dysfunction. Nonopioid postoperative pain management techniques, limiting narcotics to oral formulations and avoiding morphine, appear to reduce the risk of postoperative cognitive dysfunction.

Conclusions

Both anesthetic and pain management strategies appear to influence the risk of early cognitive dysfunction after elective joint arthroplasty, although only one study identified differences that persisted beyond 1 week after surgery. Investigators should strive to use accepted, validated tools for the assessment of postoperative cognitive dysfunction and to carefully report details of the anesthetic and analgesic techniques used in future studies.

Copyright information

© The Association of Bone and Joint Surgeons® 2013