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Thedim M, Vacas S. Postoperative Delirium and the Older Adult: Untangling the Confusion. J Neurosurg Anesthesiol 2024:00008506-990000000-00108. [PMID: 38683185 DOI: 10.1097/ana.0000000000000971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 04/01/2024] [Indexed: 05/01/2024]
Abstract
Postoperative delirium is one of the most prevalent postoperative complications, affecting mostly older adults. Its incidence is expected to rise because of surgical advances, shifting demographics, and increased life expectancy. Although an acute alteration in brain function, postoperative delirium is associated with adverse outcomes, including progressive cognitive decline and dementia, that place significant burdens on patients' lives and healthcare systems. This has prompted efforts to understand the mechanisms of postoperative delirium to provide effective prevention and treatment. There are multiple mechanisms involved in the etiology of postoperative delirium that share similarities with the physiological changes associated with the aging brain. In addition, older patients often have multiple comorbidities including increased cognitive impairment that is also implicated in the genesis of delirium. These tangled connections pinpointed a shift toward creation of a holistic model of the pathophysiology of postoperative delirium. Scientific advancements integrating clinical risk factors, possible postoperative delirium biomarkers, genetic features, digital platforms, and other biotechnical and information technological innovations, will become available in the near future. Advances in artificial intelligence, for example, will aggregate cognitive testing platforms with patient-specific postoperative delirium risk stratification studies, panels of serum and cerebrospinal fluid molecules, electroencephalogram signatures, and gut microbiome features, along with the integration of novel polygenetic variants of sleep and cognition. These advances will allow for the enrollment of high-risk patients into prevention programs and help uncover new pharmacologic targets.
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Affiliation(s)
- Mariana Thedim
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA
- Serviço de Anestesiologia, Unidade Local de Saúde Gaia e Espinho, Vila Nova de Gaia, Portugal
| | - Susana Vacas
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA
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Chanan EL, Wagener G, Whitlock EL, Berger JC, McAdams-DeMarco MA, Yeh JS, Nunnally ME. Perioperative Considerations in Older Kidney and Liver Transplant Recipients: A Review. Transplantation 2024:00007890-990000000-00716. [PMID: 38557579 DOI: 10.1097/tp.0000000000005000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
With the growth of the older adult population, the number of older adults waitlisted for and undergoing kidney and liver transplantation has increased. Transplantation is an important and definitive treatment for this population. We present a contemporary review of the unique preoperative, intraoperative, and postoperative issues that patients older than 65 y face when they undergo kidney or liver transplantation. We focus on geriatric syndromes that are common in older patients listed for kidney or liver transplantation including frailty, sarcopenia, and cognitive dysfunction; discuss important considerations for older transplant recipients, which may impact preoperative risk stratification; and describe unique challenges in intraoperative and postoperative management for older patients. Intraoperative challenges in the older adult include using evidence-based best anesthetic practices, maintaining adequate perfusion pressure, and using minimally invasive surgical techniques. Postoperative concerns include controlling acute postoperative pain; preventing cardiovascular complications and delirium; optimizing immunosuppression; preventing perioperative kidney injury; and avoiding nephrotoxicity and rehabilitation. Future studies are needed throughout the perioperative period to identify interventions that will improve patients' preoperative physiologic status, prevent postoperative medical complications, and improve medical and patient-centered outcomes in this vulnerable patient population.
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Affiliation(s)
- Emily L Chanan
- Department of Anesthesiology, Perioperative Care and Pain Medicine, NYU Grossman School of Medicine, New York, NY
| | - Gebhard Wagener
- Department of Anesthesiology, Columbia University Irving Medical Center, New York, NY
| | - Elizabeth L Whitlock
- Department of Anesthesia & Perioperative Care, University of California, San Francisco, San Francisco, CA
| | - Jonathan C Berger
- Department of Surgery, NYU Grossman School of Medicine, New York, NY
| | - Mara A McAdams-DeMarco
- Department of Surgery, NYU Grossman School of Medicine, New York, NY
- Department of Population Health, NYU Grossman School of Medicine, New York, NY
| | - Joseph S Yeh
- Department of Anesthesiology, Perioperative Care and Pain Medicine, NYU Grossman School of Medicine, New York, NY
| | - Mark E Nunnally
- Department of Anesthesiology, Perioperative Care and Pain Medicine, NYU Grossman School of Medicine, New York, NY
- Department of Surgery, NYU Grossman School of Medicine, New York, NY
- Department of Neurology, NYU Grossman School of Medicine, New York, NY
- Department of Medicine, NYU Grossman School of Medicine, New York, NY
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Oliveri S, Bocci T, Maiorana NV, Guidetti M, Cimino A, Rosci C, Ghilardi G, Priori A. Cognitive trajectories after surgery: Guideline hints for assessment and treatment. Brain Cogn 2024; 176:106141. [PMID: 38458027 DOI: 10.1016/j.bandc.2024.106141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 02/21/2024] [Accepted: 02/25/2024] [Indexed: 03/10/2024]
Abstract
Elderly patients who undergo major surgery (not-neurosurgical) under general anaesthesia frequently complain about cognitive difficulties, especially during the first weeks after surgical "trauma". Although recovery usually occurs within a month, about one out of four patients develops full-blown postoperative Neurocognitive disorders (NCD) which compromise quality of life or daily autonomy. Mild/Major NCD affect approximately 10% of patients from three months to one year after major surgery. Neuroinflammation has emerged to have a critical role in the postoperative NCDs pathogenesis, through microglial activation and the release of pro-inflammatory cytokines which increase blood-brain-barrier permeability, enhance movement of leukocytes into the central nervous system (CNS) and favour the neuronal damage. Moreover, pre-existing Mild Cognitive Impairment, alcohol or drugs consumption, depression and other factors, together with several intraoperative and post-operative sequelae, can exacerbate the severity and duration of NCDs. In this context it is crucial rely on current progresses in serum and CSF biomarker analysis to frame neuroinflammation levels, along with establishing standard protocol for neuropsychological assessment (with specific set of tools) and to apply cognitive training or neuromodulation techniques to reduce the incidence of postoperative NCDs when required. It is recommended to identify those patients who would need such preventive intervention early, by including them in pre-operative and post-operative comprehensive evaluation and prevent the development of a full-blown dementia after surgery. This contribution reports all the recent progresses in the NCDs diagnostic classification, pathogenesis discoveries and possible treatments, with the aim to systematize current evidences and provide guidelines for multidisciplinary care.
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Affiliation(s)
- Serena Oliveri
- "Aldo Ravelli" Center for Neurotechnology and Brain Therapeutics Department of Health Sciences, University of Milan, Italy; Neurological Clinic, Azienda Socio Sanitaria Territoriale - Santi Paolo e Carlo, Department of Health Sciences, University of Milan, Italy.
| | - Tommaso Bocci
- "Aldo Ravelli" Center for Neurotechnology and Brain Therapeutics Department of Health Sciences, University of Milan, Italy; Neurological Clinic, Azienda Socio Sanitaria Territoriale - Santi Paolo e Carlo, Department of Health Sciences, University of Milan, Italy
| | - Natale Vincenzo Maiorana
- "Aldo Ravelli" Center for Neurotechnology and Brain Therapeutics Department of Health Sciences, University of Milan, Italy
| | - Matteo Guidetti
- "Aldo Ravelli" Center for Neurotechnology and Brain Therapeutics Department of Health Sciences, University of Milan, Italy
| | - Andrea Cimino
- Department of Health Science, School of Medicine and Surgery, University of Milano-Bicocca, Italy; Neurosurgery Unit, Neuroscience Department, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
| | - Chiara Rosci
- Neurological Clinic, Azienda Socio Sanitaria Territoriale - Santi Paolo e Carlo, Department of Health Sciences, University of Milan, Italy
| | - Giorgio Ghilardi
- Department of Health Science, School of Medicine and Surgery, University of Milano-Bicocca, Italy; General Surgery Unit, Azienda Socio Sanitaria Territoriale - Santi Paolo e Carlo, Department of Health Sciences, University of Milan, Italy
| | - Alberto Priori
- "Aldo Ravelli" Center for Neurotechnology and Brain Therapeutics Department of Health Sciences, University of Milan, Italy; Neurological Clinic, Azienda Socio Sanitaria Territoriale - Santi Paolo e Carlo, Department of Health Sciences, University of Milan, Italy
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Mehler DM, Kreuzer M, Obert DP, Cardenas LF, Barra I, Zurita F, Lobo FA, Kratzer S, Schneider G, Sepúlveda PO. Electroencephalographic guided propofol-remifentanil TCI anesthesia with and without dexmedetomidine in a geriatric population: electroencephalographic signatures and clinical evaluation. J Clin Monit Comput 2024:10.1007/s10877-024-01127-4. [PMID: 38451341 DOI: 10.1007/s10877-024-01127-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 01/17/2024] [Indexed: 03/08/2024]
Abstract
Elderly and multimorbid patients are at high risk for developing unfavorable postoperative neurocognitive outcomes; however, well-adjusted and EEG-guided anesthesia may help titrate anesthesia and improve postoperative outcomes. Over the last decade, dexmedetomidine has been increasingly used as an adjunct in the perioperative setting. Its synergistic effect with propofol decreases the dose of propofol needed to induce and maintain general anesthesia. In this pilot study, we evaluate two highly standardized anesthetic regimens for their potential to prevent burst suppression and postoperative neurocognitive dysfunction in a high-risk population. Prospective, randomized clinical trial with non-blinded intervention. Operating room and post anesthesia care unit at Hospital Base San José, Osorno/Universidad Austral, Valdivia, Chile. 23 patients with scheduled non-neurologic, non-cardiac surgeries with age > 69 years and a planned intervention time > 60 min. Patients were randomly assigned to receive either a propofol-remifentanil based anesthesia or an anesthetic regimen with dexmedetomidine-propofol-remifentanil. All patients underwent a slow titrated induction, followed by a target controlled infusion (TCI) of propofol and remifentanil (n = 10) or propofol, remifentanil and continuous dexmedetomidine infusion (n = 13). We compared the perioperative EEG signatures, drug-induced changes, and neurocognitive outcomes between two anesthetic regimens in geriatric patients. We conducted a pre- and postoperative Montreal Cognitive Assessment (MoCa) test and measured the level of alertness postoperatively using a sedation agitation scale to assess neurocognitive status. During slow induction, maintenance, and emergence, burst suppression was not observed in either group; however, EEG signatures differed significantly between the two groups. In general, EEG activity in the propofol group was dominated by faster rhythms than in the dexmedetomidine group. Time to responsiveness was not significantly different between the two groups (p = 0.352). Finally, no significant differences were found in postoperative cognitive outcomes evaluated by the MoCa test nor sedation agitation scale up to one hour after extubation. This pilot study demonstrates that the two proposed anesthetic regimens can be safely used to slowly induce anesthesia and avoid EEG burst suppression patterns. Despite the patients being elderly and at high risk, we did not observe postoperative neurocognitive deficits. The reduced alpha power in the dexmedetomidine-treated group was not associated with adverse neurocognitive outcomes.
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Affiliation(s)
- Dominik M Mehler
- Department of Anesthesiology and Intensive Care, School of Medicine, Technical University of Munich, Munich, Germany
| | - Matthias Kreuzer
- Department of Anesthesiology and Intensive Care, School of Medicine, Technical University of Munich, Munich, Germany
| | - David P Obert
- Department of Anesthesiology and Intensive Care, School of Medicine, Technical University of Munich, Munich, Germany
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts's General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Luis F Cardenas
- Department of Anesthesiology, Hospital Base San José, Osorno/Universidad Austral, Valdivia, Chile
| | - Ignacio Barra
- Department of Anesthesiology, Hospital Base San José, Osorno/Universidad Austral, Valdivia, Chile
| | - Fernando Zurita
- Department of Anesthesiology, Hospital Base San José, Osorno/Universidad Austral, Valdivia, Chile
| | - Francisco A Lobo
- Anesthesiology Institute, Cleveland Clinic Abu Dhabi, United Arab Emirates, Abu Dhabi, UAE
| | - Stephan Kratzer
- Department of Anesthesiology and Intensive Care, School of Medicine, Technical University of Munich, Munich, Germany
| | - Gerhard Schneider
- Department of Anesthesiology and Intensive Care, School of Medicine, Technical University of Munich, Munich, Germany
| | - Pablo O Sepúlveda
- Department of Anesthesiology, Hospital Base San José, Osorno/Universidad Austral, Valdivia, Chile.
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Amirpour A, Eckerblad J, Bergman L, Nilsson U. Comparing analog and digital neurocognitive tests with older adults: a study of the ISPOCD battery vs. a digital test battery from Mindmore. BMC Geriatr 2024; 24:34. [PMID: 38191318 PMCID: PMC10775484 DOI: 10.1186/s12877-023-04648-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 12/29/2023] [Indexed: 01/10/2024] Open
Abstract
BACKGROUND Delayed neurocognitive recovery and neurocognitive disorder are common postoperative complications among older adults. The assessment of these complications traditionally relies on analog neurocognitive tests, predominantly using the test battery from the ISPOCD-study as the standard approach. However, analog tests are time-consuming and necessitate trained staff which poses limitations. The potential availability of a digital neurocognitive test as an alternative to the ISPOCD remains unknown. We conducted a comparative study between the analog test battery from ISPOCD and the self-administrated digital test battery developed by Mindmore. METHODS We conducted a crossover study with 50 cognitively healthy older adults ≥ 60 years of age recruited in Stockholm Sweden, between February and April 2022. The primary outcome focused on measuring comparability between the two test batteries. Our secondary outcomes included assessing participants' perceptions and attitudes about the tests with qualitative interviews and their usability experiences. RESULTS Fifty older adults, mean age 76, female 56%, with a university or college degree 48% participated in the study. The sub tests in two test batteries demonstrated a medium-large correlation (r = 0.3-0.5), except for one measure. For four out of six measures, significant differences were found with medium to large effect sizes, ranging from 0.57-1.43. Two categories were recognized in the qualitative analysis: self-competing in a safe environment, and experience with technology. Participants expressed feeling safe and at ease during the assessment, with some preferring the digital test over the analog. Participants reported a high level of usability with the digital test and a majority participants (n = 47) reported they would undergo the digital test for a potential future surgery. CONCLUSIONS The digital test battery developed by Mindmore offers several advantages, including rapid access to test results, easy comprehension, and use for participants, thereby increased accessibility of cognitive screening. TRIAL REGISTRATION NUMBER NCT05253612; ClinicalTrials.gov, 24/02/2022.
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Affiliation(s)
- Anahita Amirpour
- Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Alfred Nobels Allé 23, C4, 141 83, Stockholm, Sweden.
| | - Jeanette Eckerblad
- Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Alfred Nobels Allé 23, C4, 141 83, Stockholm, Sweden
| | - Lina Bergman
- Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Alfred Nobels Allé 23, C4, 141 83, Stockholm, Sweden
| | - Ulrica Nilsson
- Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Alfred Nobels Allé 23, C4, 141 83, Stockholm, Sweden
- Perioperative Medicine and Intensive Care, Karolinska University Hospital, Stockholm, Sweden
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Xin Y, Chu T, Zhou S, Xu A. α5GABA A receptor: A potential therapeutic target for perioperative neurocognitive disorders, a review of preclinical studies. Brain Res Bull 2023; 205:110821. [PMID: 37984621 DOI: 10.1016/j.brainresbull.2023.110821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 11/14/2023] [Accepted: 11/17/2023] [Indexed: 11/22/2023]
Abstract
Perioperative neurocognitive disorders (PND) are a common complication in elderly patients following surgery, which not only prolongs the recovery period but also affects their future quality of life and imposes a significant burden on their family and society. Multiple factors, including aging, vulnerability, anesthetic drugs, cerebral oxygen desaturation, and severe pain, have been associated with PND. Unfortunately, no effective drug is currently available to prevent PND. α5 γ-aminobutyric acid subtype A (α5GABAA) receptors have been implicated in cognitive function modulation. Positive or negative allosteric modulators of α5GABAA receptors have been found to improve cognitive impairment under different conditions. Therefore, targeting α5GABAA receptors may represent a promising treatment strategy for PND. This review focuses on preclinical studies of α5GABAA receptors and the risk factors associated with PND, primarily including aging, anesthetics, and neuroinflammation. Specifically, positive allosteric modulators of α5GABAA receptors have improved cognitive function in aged experimental animals. In contrast, negative allosteric modulators of α5GABAA receptors have been found to facilitate cognitive recovery in aged or adult experimental animals undergoing anesthesia and surgery but not in aged experimental animals under anesthesia alone. The reasons for the discordant findings have yet to be elucidated. In preclinical studies, different strategies of drug administration, as well as various behavioral tests, may influence the stability of the results. These issues need to be carefully considered in future studies.
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Affiliation(s)
- Yueyang Xin
- Department of Anesthesiology, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Tiantian Chu
- Department of Anesthesiology, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Siqi Zhou
- Department of Anesthesiology, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Aijun Xu
- Department of Anesthesiology, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China.
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7
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Yan E, Veitch M, Saripella A, Alhamdah Y, Butris N, Tang-Wai DF, Tartaglia MC, Nagappa M, Englesakis M, He D, Chung F. Association between postoperative delirium and adverse outcomes in older surgical patients: A systematic review and meta-analysis. J Clin Anesth 2023; 90:111221. [PMID: 37515876 DOI: 10.1016/j.jclinane.2023.111221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 07/10/2023] [Accepted: 07/19/2023] [Indexed: 07/31/2023]
Abstract
STUDY OBJECTIVE To assess the incidence of postoperative delirium and its outcomes in older non-cardiac surgical patients. DESIGN A systematic review and meta-analysis with multiple databases searched from inception to February 22, 2022. SETTING Postoperative assessments. PATIENTS Non-cardiac and non-neurological surgical patients aged ≥60 years with and without postoperative delirium. Included studies must report ≥1 postoperative outcome. Studies with a small sample size (N < 100 subjects) were excluded. MEASUREMENTS Outcomes comprised the pooled incidence of postoperative delirium and its postoperative outcomes, including mortality, complications, unplanned intensive care unit admissions, length of stay, and non-home discharge. For dichotomous and continuous outcomes, OR and difference in means were computed, respectively, with a 95% CI. MAIN RESULTS Fifty-four studies (20,988 patients, 31 elective studies, 23 emergency studies) were included. The pooled incidence of postoperative delirium was 19% (95% CI: 16%, 23%) after elective surgery and 32% (95% CI: 25%, 39%) after emergency surgery. In elective surgery, postoperative delirium was associated with increased mortality at 1-month (OR: 6.60; 95% CI: 1.58, 27.66), 6-month (OR: 5.69; 95% CI: 2.33, 13.88), and 1-year (OR: 2.87; 95% CI: 1.63, 5.06). The odds of postoperative complications, unplanned intensive care unit admissions, prolonged length of hospital stay, and non-home discharge were also higher in delirium cases. In emergency surgery, patients with postoperative delirium had greater odds of mortality at 1-month (OR: 3.56; 95% CI: 1.77, 7.15), 6-month (OR: 2.60; 95% CI: 1.88, 3.61), and 1-year (OR: 2.30; 95% CI: 1.77, 3.00). CONCLUSIONS Postoperative delirium was associated with higher odds of mortality, postoperative complications, unplanned intensive care unit admissions, length of hospital stay, and non-home discharge. Prevention and perioperative management of delirium may optimize surgical outcomes.
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Affiliation(s)
- Ellene Yan
- Department of Anesthesia and Pain Management, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, ON, Canada; Institute of Medical Science, Temerty Faculty of Medicine, University of Toronto, ON, Canada
| | - Matthew Veitch
- Department of Anesthesia and Pain Management, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, ON, Canada
| | - Aparna Saripella
- Department of Anesthesia and Pain Management, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, ON, Canada
| | - Yasmin Alhamdah
- Department of Anesthesia and Pain Management, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, ON, Canada; Institute of Medical Science, Temerty Faculty of Medicine, University of Toronto, ON, Canada
| | - Nina Butris
- Department of Anesthesia and Pain Management, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, ON, Canada; Institute of Medical Science, Temerty Faculty of Medicine, University of Toronto, ON, Canada
| | - David F Tang-Wai
- Division of Neurology, Department of Medicine, University of Toronto, Toronto, ON, Canada
| | - Maria Carmela Tartaglia
- Institute of Medical Science, Temerty Faculty of Medicine, University of Toronto, ON, Canada; Division of Neurology, Department of Medicine, University of Toronto, Toronto, ON, Canada
| | - Mahesh Nagappa
- Department of Anesthesia & Perioperative Medicine, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada
| | - Marina Englesakis
- Library & Information Services, University Health Network, Toronto, ON, Canada
| | - David He
- Department of Anesthesiology and Pain Medicine, Mount Sinai Hospital, University of Toronto, Toronto, ON, Canada
| | - Frances Chung
- Department of Anesthesia and Pain Management, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, ON, Canada; Institute of Medical Science, Temerty Faculty of Medicine, University of Toronto, ON, Canada.
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Hart WK, Klick JC, Tsai MH. Efficiency, Safety, Quality, and Empathy: Balancing Competing Perioperative Challenges in the Elderly. Anesthesiol Clin 2023; 41:657-670. [PMID: 37516501 DOI: 10.1016/j.anclin.2023.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/31/2023]
Abstract
Although baby boomer generation accounts for a little more than 15% of the US population, the cohort represents a disproportionate percentage of patients undergoing surgery. As this group continues to age, a multitude of challenges have arisen in health care regarding the safest and most effective means of providing anesthesia services to these patients. Many elderly patients may be exquisitely sensitive to the effects of anesthesia and surgery and may experience cognitive and physical decline before, during, or after hospital admission. In this review article, the authors briefly examine the physiologic processes underlying aging and explore steps necessary to deliver safe, empathetic care.
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Affiliation(s)
- William K Hart
- Department of Anesthesiology, University of Vermont Larner College of Medicine, Burlington, VT, USA
| | - John C Klick
- Department of Anesthesiology, University of Vermont Larner College of Medicine, Burlington, VT, USA
| | - Mitchell H Tsai
- Department of Anesthesiology, University of Vermont Larner College of Medicine, Burlington, VT, USA; Department of Orthopaedics and Rehabilitation (by courtesy), University of Vermont Larner College of Medicine, Burlington, VT, USA; Department of Surgery (by courtesy), University of Vermont Larner College of Medicine, Burlington, VT, USA.
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Vann MA. The future of ambulatory surgery for geriatric patients. Best Pract Res Clin Anaesthesiol 2023; 37:343-355. [PMID: 37938081 DOI: 10.1016/j.bpa.2022.12.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/07/2022] [Accepted: 12/28/2022] [Indexed: 01/06/2023]
Abstract
The elderly segment of the population is growing rapidly worldwide. Older patients comprise a disproportionate percentage of the surgical caseload. Physiological changes are inevitable with aging; some may impact a patient's response to anesthesia and surgery. Careful evaluation of an elderly patient preoperatively is vital to proper patient selection for ambulatory surgeries, particularly for complex and lengthy procedures. Cognitive issues, frailty, and geriatric syndromes make a patient vulnerable and sometimes unsuitable for certain ambulatory procedures. Preoperative planning and interventions may improve outcomes for the elderly patient undergoing ambulatory surgery.
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Affiliation(s)
- Mary Ann Vann
- Department of Anesthesia, Pain, and Critical Care, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215, USA; Harvard Medical School, Boston, MA, USA.
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10
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Rhee J, Vazquez R, Ma H. Does Beers Put Preoperative Benzos on the Brink? Anesth Analg 2023; 137:277-279. [PMID: 37450905 DOI: 10.1213/ane.0000000000006522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Affiliation(s)
- James Rhee
- From the Department of Anesthesia, Critical Care and Pain Medicine
- Cardiovascular Research Center, Massachusetts General Hospital, Boston, Massachusetts
| | - Rafael Vazquez
- From the Department of Anesthesia, Critical Care and Pain Medicine
| | - Haobo Ma
- Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
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Amirpour A, Eckerblad J, Thorell A, Bergman L, Nilsson U. Usability and feasibility of a digital cognitive screening tool measuring older adults' early postoperative neurocognitive recovery: a protocol for a pilot study. BMJ Open 2023; 13:e070404. [PMID: 37479514 PMCID: PMC10364180 DOI: 10.1136/bmjopen-2022-070404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/23/2023] Open
Abstract
INTRODUCTION Delayed neurocognitive recovery, also identified as early postoperative cognitive decline (POCD), is a common complication after surgery, with advanced age being the most important risk factor. As the geriatric population is increasing worldwide, and number of older adults undergoing surgery continues to rise, so will the incidence of POCD. Only a small proportion use digital cognitive tests for measuring postoperative neurocognitive performance compared with analogue tests. This study aims to evaluate a digital cognitive screening tool, Mindmore Postoperative version (Mindmore-P), in a perioperative setting to determine its feasibility and usability, and to compare preoperative cognition with early postoperative neurocognitive performance. Further, to determine associations between neurocognitive performance and perioperative factors as well as to explore patients' experiences of early neurocognitive recovery. METHODS AND ANALYSIS We will include 50 patients (aged ≥60 years) undergoing elective abdominal surgery under general anaesthesia. Cognitive functions will be measured with Mindmore-P preoperatively and on postoperative day (POD) 1 or 2 as well as 2-3 weeks after surgery. Preoperatively, frailty, (Clinical Frailty Scale), depression (Geriatric Depression Scale-15), functional status (12-item WHO Disability Assessment Schedule 2.0) and pre-recovery status (Swedish web version Quality of Recovery Scale, SwQoR) will be measured. Delirium will be assessed by Nu-DESC (Nursing Delirium Screening Scale) twice a day, with start on POD 1 and until the patient is discharged from the hospital. Outcomes at 2-3 weeks postoperatively are postoperative recovery (SwQoR), depression, functional status and usability (System Usability Scale) of Mindmore-P. Postoperative recovery will also be measured POD 1 or 2. We will also explore feasibility and experience of early postoperative neurocognitive recovery with interviews approximately 1 month after surgery. ETHICS AND DISSEMINATION This study is approved by the Swedish Ethical Review Authority (REC Reference: 2022-03593-01) and will follow the principles outlined in the 1964 Helsinki Declaration and its later amendments. Results from this study will be disseminated in peer-reviewed journals, scientific conferences and in social media. TRIAL REGISTRATION NUMBER NCT05564195.
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Affiliation(s)
- Anahita Amirpour
- Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
| | - Jeanette Eckerblad
- Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
| | - Anders Thorell
- Department of Clinical Sciences Intervention and Technology, Karolinska institutet, Huddinge, Sweden
| | - Lina Bergman
- Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
| | - Ulrica Nilsson
- Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
- Perioperative Medicine and Intensive Care, Karolinska Universitetssjukhuset, Stockholm, Sweden
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12
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Ju LS, Morey TE, Seubert CN, Martynyuk AE. Intergenerational Perioperative Neurocognitive Disorder. BIOLOGY 2023; 12:biology12040567. [PMID: 37106766 PMCID: PMC10135810 DOI: 10.3390/biology12040567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/04/2023] [Accepted: 04/05/2023] [Indexed: 04/29/2023]
Abstract
Accelerated neurocognitive decline after general anesthesia/surgery, also known as perioperative neurocognitive disorder (PND), is a widely recognized public health problem that may affect millions of patients each year. Advanced age, with its increasing prevalence of heightened stress, inflammation, and neurodegenerative alterations, is a consistent contributing factor to the development of PND. Although a strong homeostatic reserve in young adults makes them more resilient to PND, animal data suggest that young adults with pathophysiological conditions characterized by excessive stress and inflammation may be vulnerable to PND, and this altered phenotype may be passed to future offspring (intergenerational PND). The purpose of this narrative review of data in the literature and the authors' own experimental findings in rodents is to draw attention to the possibility of intergenerational PND, a new phenomenon which, if confirmed in humans, may unravel a big new population that may be affected by parental PND. In particular, we discuss the roles of stress, inflammation, and epigenetic alterations in the development of PND. We also discuss experimental findings that demonstrate the effects of surgery, traumatic brain injury, and the general anesthetic sevoflurane that interact to induce persistent dysregulation of the stress response system, inflammation markers, and behavior in young adult male rats and in their future offspring who have neither trauma nor anesthetic exposure (i.e., an animal model of intergenerational PND).
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Affiliation(s)
- Ling-Sha Ju
- Department of Anesthesiology, College of Medicine, University of Florida, P.O. Box 100254, JHMHC, 1600 SW Archer Road, Gainesville, FL 32610, USA
| | - Timothy E Morey
- Department of Anesthesiology, College of Medicine, University of Florida, P.O. Box 100254, JHMHC, 1600 SW Archer Road, Gainesville, FL 32610, USA
| | - Christoph N Seubert
- Department of Anesthesiology, College of Medicine, University of Florida, P.O. Box 100254, JHMHC, 1600 SW Archer Road, Gainesville, FL 32610, USA
| | - Anatoly E Martynyuk
- Department of Anesthesiology, College of Medicine, University of Florida, P.O. Box 100254, JHMHC, 1600 SW Archer Road, Gainesville, FL 32610, USA
- Brain Institute, College of Medicine, University of Florida, Gainesville, FL 32610, USA
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13
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Yan E, He D, Rajji TK, Chung F. Cognitive impairment and its adverse outcomes in older surgical patients: an under-recognized problem! Int Anesthesiol Clin 2023; 61:23-28. [PMID: 36735463 DOI: 10.1097/aia.0000000000000392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Ellene Yan
- Department of Anesthesia and Pain Medicine, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada
- Institute of Medical Science, Temerty Faculty of Medicine, University of Toronto, Ontario, Canada
| | - David He
- Department of Anesthesia and Pain Management, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Tarek K Rajji
- Institute of Medical Science, Temerty Faculty of Medicine, University of Toronto, Ontario, Canada
- Department of Adult Neurodevelopment and Geriatric Psychiatry, Centre for Addictions and Mental Health, Toronto, Ontario, Canada
- Toronto Dementia Research Alliance, University of Toronto, Toronto, Ontario, Canada
| | - Frances Chung
- Department of Anesthesia and Pain Medicine, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada
- Institute of Medical Science, Temerty Faculty of Medicine, University of Toronto, Ontario, Canada
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14
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Tang C, Zheng X, Zhong Y, Chen D, Zhu Y, Wang S, Xiong L, Zhu Z. The role of TREM1 in regulating microglial polarization in sevoflurane-induced perioperative neurocognitive disorders. J Neuroimmunol 2023; 379:578070. [PMID: 37148600 DOI: 10.1016/j.jneuroim.2023.578070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 02/27/2023] [Accepted: 03/13/2023] [Indexed: 03/18/2023]
Abstract
Microglia-mediated neuroinflammatory responses play a key role in perioperative neurocognitive disorders (PND). Triggering receptor expressed on myeloid cells-1 (TREM1) has been shown to be a key regulator of inflammation. However, its role in PND remains largely unknown. This study aimed to evaluate the role of TREM1 in sevoflurane-induced PND. We applied AAV knockdown TREM1 in hippocampal microglia in aging mice. The mice were then subjected to neurobehavioral and biochemical testing after the intervention of sevoflurane. We found that sevoflurane inhalation can cause PND in mice, increase hippocampal TREM1 expression, polarize microglia to M1 type, upregulate TNF-α and IL-1β expression (pro-inflammatory), and inhibit TGF-β and IL-10 expression (anti-inflammatory). Knocking down TREM1 can improve sevoflurane-induced cognitive dysfunction, reduce M1 type marker iNOS, and increase M2 type marker ARG, improving the neuroinflammation. TREM1 is a target for sevoflurane-induced PND prevention.
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Affiliation(s)
- Chunchun Tang
- Suzhou Medical College of Soochow University, Suzhou, China; Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Xue Zheng
- Department of Anesthesiology, Maternal and Child Health Care Hospital of Zunyi, Zunyi, China
| | - Yuanping Zhong
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Dongqin Chen
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Yuhang Zhu
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Sihui Wang
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Liulin Xiong
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Zhaoqiong Zhu
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China.
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15
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Au E, Thangathurai G, Saripella A, Yan E, Englesakis M, Nagappa M, Chung F. Postoperative Outcomes in Elderly Patients Undergoing Cardiac Surgery With Preoperative Cognitive Impairment: A Systematic Review and Meta-Analysis. Anesth Analg 2023; 136:1016-1028. [PMID: 36728298 DOI: 10.1213/ane.0000000000006346] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
BACKGROUND Older patients with preoperative cognitive impairment are at risk for increased postoperative complications after noncardiac surgery. This systematic review and meta-analysis aimed to determine the association between preoperative cognitive impairment and dementia and postoperative outcomes in older surgical patients after cardiac surgery. METHODS Eight electronic databases were searched from inception to January 4, 2022. Inclusion criteria were cardiac surgery patients ≥60 years of age; preoperative cognitive impairment; ≥1 postoperative complication reported; comparator group with no preoperative cognitive impairment; and written in English. Using a random-effects model, we calculated effect sizes as odds ratio (OR) and standardized mean differences (SMDs). Risk of random error was assessed by applying trial sequential analysis. RESULTS Sixteen studies (62,179 patients) were included. Preoperative cognitive impairment was associated with increased risk of delirium in older patients after cardiac surgery (70.0% vs 20.5%; OR, 8.35; 95% confidence interval [CI], 4.25-16.38; I2, 0%; P < .00001). Cognitive impairment was associated with increased hospital length of stay (LOS; SMD, 0.36; 95% CI, 0.20-0.51; I2, 22%; P < .00001) and intensive care unit (ICU) LOS (SMD, 0.39; 95% CI, 0.09-0.68; I2, 70%; P = .01). No significant association was seen for 30-day mortality (1.7% vs 1.1%; OR, 2.58; 95% CI, 0.64-10.44; I2, 55%; P = .18). CONCLUSIONS In older patients undergoing cardiac surgery, cognitive impairment was associated with an 8-fold increased risk of delirium, a 5% increase in absolute risk of major postoperative bleeding, and an increase in hospital and ICU LOS by approximately 0.4 days. Further research on the feasibility of implementing routine neurocognitive testing is warranted.
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Affiliation(s)
- Emily Au
- From the Department of Anesthesia and Pain Management, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada
| | | | - Aparna Saripella
- From the Department of Anesthesia and Pain Management, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada
| | - Ellene Yan
- From the Department of Anesthesia and Pain Management, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada.,Department of Medical Science, University of Toronto, Toronto, Ontario, Canada
| | - Marina Englesakis
- Department of Library & Information Services, University Health Network, Toronto, Ontario, Canada
| | - Mahesh Nagappa
- Department of Anesthesia and Perioperative Medicine, London Health Sciences Centre and St Joseph Health Care, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - Frances Chung
- From the Department of Anesthesia and Pain Management, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada
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