• Arch Gerontol Geriatr · Mar 2020

    Meta Analysis

    Postoperative delirium after hip surgery is a potential risk factor for incident dementia: A systematic review and meta-analysis of prospective studies.

    • Soong Joon Lee, Se Hee Jung, Shi-Uk Lee, Jae-Young Lim, Kang-Sup Yoon, and Sang Yoon Lee.
    • Department of Orthopaedic Surgery, Seoul National University College of Medicine, SMG-SNU Boramae Medical Center, Seoul, Republic of Korea.
    • Arch Gerontol Geriatr. 2020 Mar 1; 87: 103977.

    BackgroundAlthough a few trials have explored the relationship between postoperative delirium (POD) and incident dementia in patients with hip surgery, the numbers of participants in each study are relatively small. Thus, we performed a meta-analysis to examine whether POD after hip surgery is a risk factor for incident dementia.MethodsSix prospective cohort studies investigating the development of incident dementia in patients with POD after hip surgery were retrieved from PubMed, Embase, and the Cochrane Library. We performed a pairwise meta-analysis using fixed- and random- effect models.ResultsPOD significantly increased the risk of incident dementia and cognitive decline (overall odds ratio [ORs] = 8.957; 95 % confidence interval [CI], 5.444-14.737; P <  0.001 in fixed-effects model; overall ORs = 8.962; 95 % CI, 5.344-15.029; P <  0.001 in random-effects model). A publication bias was not evident in this study.ConclusionsOur meta-analysis revealed that POD after hip surgery is a risk factor for incident dementia. Early identification of cognitive function should be needed after surgery and appropriate prevention and treatment for dementia will be required, especially in cases with POD.Copyright © 2019 Elsevier B.V. All rights reserved.

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