* Introduction: Greenhouse gases threaten the health and safety of humanity. The Declaration of Helsinki seeks to protect human health and emphasizes the urgency of implementing sustainable strategies. Sustainability is defined by three pillars: economic (costs), social (clinical effectiveness), and environmental (environmental impact). Clinical effectiveness in cardiac surgery has a new paradigm: "optimized recovery," which translates into fewer complications, earlier extubation, shorter ICU stays, and potential cost reductions. The objective of this study is to compare the sustainability of the optimized recovery anesthetic technique with standard anesthetic practice in coronary artery bypass graft surgery, using a non-randomized interventional study design. * Methods: Patients aged 18 years or older with coronary artery disease scheduled for elective coronary artery bypass graft surgery will be recruited. Combined procedures and reinterventions will be excluded. Sample size: The optimized recovery group is expected to reduce postoperative mechanical ventilation by two hours. With a 95% confidence interval, 80% power, and a 1:3 ratio between the groups, a sample size of 29 and 87 patients was estimated for the optimized recovery and standard anesthesia groups, respectively. * The optimized recovery technique includes, preoperatively, oral pregabalin 75 mg, fasting, no benzodiazepines, total intravenous anesthesia, low-dose intravenous fentanyl, methadone 0.1-0.2 mg/kg IV, erector spinae plane block with 0.25% bupivacaine (20 mL per side), and postoperative nausea and vomiting prophylaxis with dexamethasone. Postoperatively, administer paracetamol 1 g IV every 6 hours, NSAIDs, and methadone 1 mg IV as needed. The standard anesthetic technique involves the anesthesiologist administering anesthesia as they have routinely done prior to the study, without changes. * Four anesthesiologists will participate in the study. Only one anesthesiologist will perform the OR technique, and their results will be compared with those of the other three, who will use their standard anesthetic technique. Patient assignment is independent, based on the hospital's schedule. * Analysis: The clinical effectiveness of each technique will be evaluated based on ICU extubation time. An economic analysis will be conducted based on average costs, and critical environmental impacts will be estimated through a life-cycle assessment. * Outcome: The performance of the indicator "Costs in Euros/CO2e/Extubation Time" will be studied. These will contribute to the estimation of an anesthetic strategy that addresses the challenges of sustainable medicine, reduces emissions, and enables the rational use of resources and their associated costs, offering environmentally friendly and clinically effective health solutions.
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Sustainability result
Timeframe: From the moment he enters the operating room until the endotracheal tube is removed in the ICU.