Octavio Viramontes1, Betty M Luan Erfe2, J Mark Erfe3, Ethan Y Brovman4, Jacqueline Boehme5, Angela M Bader5, Richard D Urman6. 1. Harvard Medical School, Boston, MA, USA. 2. Internal Medicine Program, Department of Medicine, Queens Hospital Center, New York, NY, USA. 3. Division of Cardiac Surgery, Department of Surgery, Bluhm Cardiovascular Institute, Northwestern Memorial Hospital, Chicago, IL, USA. 4. Harvard Medical School, Boston, MA, USA; Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Boston, MA, USA; Center for Perioperative Research, Brigham and Women's Hospital, Boston, MA, USA. 5. Harvard Medical School, Boston, MA, USA; Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Boston, MA, USA. 6. Harvard Medical School, Boston, MA, USA; Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Boston, MA, USA; Center for Perioperative Research, Brigham and Women's Hospital, Boston, MA, USA. Electronic address: rurman@bwh.harvard.edu.
Abstract
STUDY OBJECTIVE: Total hip arthroplasty (THA) is a common surgical procedure in the elderly. Varying degrees of cognitive impairment (CI) are frequently seen in this patient population. To date, there has been no systematic review of the literature specifically examining the impact of CI on outcomes after elective THA. The aim of this systematic review was to identify studies that compare the postoperative outcomes of patients with and without CI after undergoing elective primary THA. DESIGN: We conducted a systematic review of prospective and retrospective studies. A systematic literature review was conducted by searching MEDLINE, PubMed, and Embase from between January 1, 1997 and January 1, 2018. A total of 234 articles were reviewed and 22 studies were selected. SETTING: Operating room and short-term and long-term postoperative recovery up to 2 years. PATIENTS: Patients with CI who underwent an elective primary THA that required general anesthesia with a comparator group of patients who did not have dementia. INTERVENTIONS: Patients who underwent elective primary total hip arthroplasty. MEASUREMENTS: Outcomes included post-operative delirium (POD), mortality and other complications, discharge disposition, length of stay (LOS), mortality, short-term (30 days) and long-term (1 month-2 years) complications. MAIN RESULTS: 22 studies with 5,705,302 participants were included in the systematic review. Sample sizes varied greatly, ranging from 14 to 2,924,995 participants. There was an association between patients with CI and an increase in POD, in-hospital mortality, complications during hospitalization, non-routine disposition, LOS, mortality between 1 month to 2 years, and worse postoperative functional status. CONCLUSIONS: We demonstrate that there are strong associations between patients with pre-existing CI undergoing THA and increased POD, hospital mortality, hospital complications, and hospital LOS. We report good quality evidence linking complications after THA to preexisting CI. Screening for CI can improve care and better predict the risk of developing postoperative complications such as delirium. Further investigations can address perioperative factors that can help reduce complications and show the utility of more widespread assessment of preoperative cognitive impairment.
STUDY OBJECTIVE: Total hip arthroplasty (THA) is a common surgical procedure in the elderly. Varying degrees of cognitive impairment (CI) are frequently seen in this patient population. To date, there has been no systematic review of the literature specifically examining the impact of CI on outcomes after elective THA. The aim of this systematic review was to identify studies that compare the postoperative outcomes of patients with and without CI after undergoing elective primary THA. DESIGN: We conducted a systematic review of prospective and retrospective studies. A systematic literature review was conducted by searching MEDLINE, PubMed, and Embase from between January 1, 1997 and January 1, 2018. A total of 234 articles were reviewed and 22 studies were selected. SETTING: Operating room and short-term and long-term postoperative recovery up to 2 years. PATIENTS: Patients with CI who underwent an elective primary THA that required general anesthesia with a comparator group of patients who did not have dementia. INTERVENTIONS:Patients who underwent elective primary total hip arthroplasty. MEASUREMENTS: Outcomes included post-operative delirium (POD), mortality and other complications, discharge disposition, length of stay (LOS), mortality, short-term (30 days) and long-term (1 month-2 years) complications. MAIN RESULTS: 22 studies with 5,705,302 participants were included in the systematic review. Sample sizes varied greatly, ranging from 14 to 2,924,995 participants. There was an association between patients with CI and an increase in POD, in-hospital mortality, complications during hospitalization, non-routine disposition, LOS, mortality between 1 month to 2 years, and worse postoperative functional status. CONCLUSIONS: We demonstrate that there are strong associations between patients with pre-existing CI undergoing THA and increased POD, hospital mortality, hospital complications, and hospital LOS. We report good quality evidence linking complications after THA to preexisting CI. Screening for CI can improve care and better predict the risk of developing postoperative complications such as delirium. Further investigations can address perioperative factors that can help reduce complications and show the utility of more widespread assessment of preoperative cognitive impairment.
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