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| Enhanced Recovery After Surgery | |
|---|---|
| Name | Enhanced Recovery After Surgery |
| Caption | Multidisciplinary perioperative pathway |
| Specialty | Surgery, Anesthesiology, Nursing |
| Synonyms | ERAS |
Enhanced Recovery After Surgery Enhanced Recovery After Surgery is a multimodal perioperative approach pioneered to reduce surgical stress, accelerate convalescence, and shorten hospital stay. It integrates evidence-based protocols from surgery, anesthesiology, nursing, and allied health to optimize outcomes across diverse procedures and patient populations.
The modern pathway emerged in the late 20th century through collaborations among clinicians in colorectal surgery, including influences from Henrik Kehlet, Olav Kjørholt, John Bisgaard, Michael G. Mythen, and teams at institutions such as Copenhagen University Hospital, Mayo Clinic, Royal Adelaide Hospital, Massachusetts General Hospital, St Thomas' Hospital, Imperial College London, University of Edinburgh, Karolinska Institutet, University of California, San Francisco, Johns Hopkins Hospital, Cleveland Clinic, University of Oxford, Addenbrooke's Hospital, University of Toronto, McMaster University, McGill University, University of Melbourne, Monash Medical Centre, Erasmus MC, Leiden University Medical Center, Charité – Universitätsmedizin Berlin, University of Amsterdam, and University College London. Early randomized controlled trials and systematic syntheses involved groups from Cochrane Collaboration, National Institute for Health and Care Excellence, Agency for Healthcare Research and Quality, World Health Organization, and national surgical societies including the American College of Surgeons, Royal College of Surgeons of England, Royal Australasian College of Surgeons, and European Society of Anaesthesiology. Influential conferences and consensus statements were produced by networks such as the ERAS Society, Enhanced Recovery Partnership (England), and collaborative trials coordinated through consortia at NIH-funded centers and regional health systems like NHS England.
Core principles draw on physiologic and clinical research from proponents and institutions including Henrik Kehlet, Francis D. Moore, William S. Halsted, John Hunter, and groups at University of Copenhagen, Mayo Clinic, Massachusetts General Hospital, Karolinska Institutet, and Cochrane. Components commonly encompass preoperative counseling and optimization led by teams from American Society of Anesthesiologists, Association of periOperative Registered Nurses, Royal College of Anaesthetists, and European Society for Clinical Nutrition and Metabolism. Protocols integrate elements such as minimally invasive surgery promoted by pioneers at Johns Hopkins Hospital, goal-directed fluid therapy developed by investigators at Erasmus MC and University of Oxford, multimodal analgesia advanced by researchers at Stanford University, and early mobilization strategies championed by rehabilitation services at University of Toronto and University of Melbourne.
Preoperative optimization references screening and interventions from National Institute for Health and Care Excellence, American College of Surgeons National Surgical Quality Improvement Program, and programs at Mayo Clinic, Cleveland Clinic, Johns Hopkins Hospital, Royal Perth Hospital, Guy's and St Thomas' NHS Foundation Trust, UCLA Health, Mount Sinai Health System, Hospital for Special Surgery, St. Michael's Hospital (Toronto), and Toronto General Hospital. Practices include prehabilitation informed by evidence from University of Copenhagen and McMaster University, nutritional assessment per guidelines from European Society for Clinical Nutrition and Metabolism and American Society for Parenteral and Enteral Nutrition, smoking cessation programs modeled on interventions from Centers for Disease Control and Prevention, and anemia management protocols adapted from World Health Organization recommendations and trials at University of Oxford.
Intraoperative strategies derive from advances in surgical technique and anesthesia by teams at Johns Hopkins Hospital, Mayo Clinic, Cleveland Clinic, Massachusetts General Hospital, Charité – Universitätsmedizin Berlin, Karolinska Institutet, Imperial College London, University of Texas MD Anderson Cancer Center, St Bartholomew's Hospital, and Addenbrooke's Hospital. Key elements include minimally invasive approaches influenced by European Association for Endoscopic Surgery, neuromuscular blockade and monitoring developed through research at Stanford University, temperature management protocols promoted by Association of periOperative Registered Nurses, and individualized hemodynamic management informed by goal-directed fluid trials at Erasmus MC and University of Oxford. Multimodal analgesia often incorporates regional anesthesia techniques advanced at Brigham and Women's Hospital and pharmacologic strategies studied by investigators at Vanderbilt University Medical Center.
Postoperative pathways integrate rehabilitation, nutrition, and discharge planning developed by services at Guy's and St Thomas' Hospital, University College London Hospitals, Hospital for Special Surgery, Royal Infirmary of Edinburgh, Toronto General Hospital, Royal Brisbane and Women's Hospital, Karolinska University Hospital, Singapore General Hospital, and St Vincent's Hospital (Sydney). Early feeding and mobilization protocols reference trials from University of Copenhagen, McMaster University, University of Sydney, and University of Melbourne. Thromboprophylaxis regimens align with guidance from American College of Chest Physicians and European Society of Cardiology studies. Readmission reduction strategies and patient education draw on programs at Mayo Clinic, Cleveland Clinic, Johns Hopkins Hospital, NHS England, and Agency for Healthcare Research and Quality.
Systematic reviews and meta-analyses by teams at Cochrane Collaboration, Cochrane Anaesthesia Group, National Institute for Health and Care Excellence, ERAS Society, University of Oxford, University of Copenhagen, Mayo Clinic, Johns Hopkins Hospital, Cleveland Clinic, Karolinska Institutet, and McMaster University report reductions in length of stay, complications, and healthcare costs. Randomized controlled trials from Massachusetts General Hospital, Erasmus MC, Addenbrooke's Hospital, University of Toronto, Monash Medical Centre, Royal Adelaide Hospital, University College London Hospitals, St Thomas' Hospital, and University of Melbourne underpin evidence for improved functional recovery and patient satisfaction. Health economic analyses conducted with partners such as World Health Organization, National Institutes of Health, NHS England, Centers for Medicare & Medicaid Services, and academic centers demonstrate variable cost-effectiveness across systems.
Implementation efforts involve multidisciplinary leadership modeled by ERAS Society, American College of Surgeons, Royal College of Surgeons of England, Association of periOperative Registered Nurses, American Society of Anesthesiologists, European Society of Anaesthesiology, and health systems including NHS England, Mayo Clinic, Cleveland Clinic, Johns Hopkins Medicine, Massachusetts General Hospital, Karolinska Institutet, University of Toronto Hospitals, and Monash Health. Barriers identified in studies from Cochrane Collaboration, Agency for Healthcare Research and Quality, and World Health Organization include variable adherence, resource constraints, cultural resistance, and interoperability challenges with electronic health records from vendors used by Veterans Health Administration, Kaiser Permanente, NHS Digital, Epic Systems Corporation, and Cerner Corporation.
Future innovation draws on precision perioperative medicine initiatives at NIH, translational research from Wellcome Trust, digital health platforms developed by Apple Inc., Google Health, Microsoft Healthcare, and telemedicine models used by Teladoc Health and NHS England. Integration with perioperative registries led by ERAS Society, American College of Surgeons National Surgical Quality Improvement Program, National Surgical Quality Improvement Program Canada, Swedish National Quality Registries, and big-data analytics from UK Biobank and All of Us Research Program may refine risk stratification. Emerging areas involve enhanced immunomodulation research at Dana-Farber Cancer Institute, regenerative medicine collaborations at Harvard Medical School, machine learning from Stanford University, and randomized implementation trials coordinated through NIH and international academic consortia.