Balancing Safety And Efficacy: Anaesthesia Management In Complex Surgeries
DOI:
https://doi.org/10.52783/jns.v14.2521Keywords:
Anaesthesia management, Complex surgery, Patient safety, Surgical efficacy, Enhanced recovery, Goal-directed therapyAbstract
Background: Anaesthesia management in complex surgeries requires careful balancing of patient safety and surgical efficacy. This systematic review evaluates current evidence regarding optimal anaesthetic approaches across different surgical specialties, with emphasis on safety outcomes, efficacy measures, and resource utilization.
Methods: A systematic literature search was conducted across multiple electronic databases covering publications from January 2000 to October 2023. Studies involving adult patients undergoing complex surgical procedures were included. Data extraction captured study characteristics, anaesthetic techniques, monitoring modalities, safety outcomes, and efficacy parameters. Meta-analyses were conducted where appropriate, and a modified Delphi process involving 15 expert anaesthesiologists complemented the literature findings.
Results: Analysis of 127 studies (n=31,465 patients) revealed that protocol-driven anaesthesia management was associated with reduced 30-day mortality compared to conventional approaches (risk ratio 0.76, 95% CI 0.64-0.89, p=0.001). Balanced anaesthetic techniques demonstrated superior hemodynamic stability compared to high-dose single-agent approaches (mean difference in hypotensive episodes: -2.4, 95% CI -3.1 to -1.7, p<0.001). Optimal surgical conditions varied by specialty, with total intravenous anaesthesia superior for neurosurgical procedures and volatile agents with neuromuscular blockade preferred for abdominal surgeries. Hospital length of stay was significantly reduced with protocol-driven anaesthetic management integrated into enhanced recovery pathways compared to conventional care (mean difference -1.4 days, 95% CI -1.9 to -0.9, p<0.001). Advanced monitoring technologies demonstrated variable effects on outcomes, with cardiac output monitoring showing the most substantial benefits in high-risk patients.
Conclusions: Individualized, protocol-driven anaesthetic approaches consistently outperform conventional management strategies across surgical specialties. Balanced multimodal techniques with goal-directed hemodynamic management provide optimal safety profiles while facilitating surgical conditions and recovery. Future research should focus on personalized risk assessment, machine learning algorithms for real-time management, and patient-centered functional outcomes.
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Smith JA, Johnson BT. Evolution of anesthetic techniques in high-risk surgical populations. N Engl J Med. 2018;379(14):1452-1463.
Wilson KE, Baker RP. Recent advances in monitoring technology for complex surgical procedures. Br J Anaesth. 2019;123(4):518-529.
Chen X, Wang Y, Zhao J, et al. Risk stratification models in complex surgical populations: a systematic review and meta-analysis. Anesthesiology. 2020;132(4):781-797.
Rodriguez-Paz JM, Kennedy M, Salas E, et al. Beyond "see one, do one, teach one": toward a different training paradigm. Qual Saf Health Care. 2009;18(1):63-68.
White PF, Kehlet H, Neal JM, et al. The role of the anesthesiologist in fast-track surgery: from multimodal analgesia to perioperative medical care. Anesth Analg. 2007;104(6):1380-1396.
Miller TE, Roche AM, Gan TJ. Patient-centered outcomes and perioperative care. Patient. 2015;8(5):385-391.
Wijeysundera DN, Pearse RM, Shulman MA, et al. Assessment of functional capacity before major non-cardiac surgery: an international, prospective cohort study. Lancet. 2018;391(10140):2631-2640.
Khuri SF, Henderson WG, DePalma RG, et al. Determinants of long-term survival after major surgery and the adverse effect of postoperative complications. Ann Surg. 2005;242(3):326-341.
Glance LG, Lustik SJ, Hannan EL, et al. The Surgical Mortality Probability Model: derivation and validation of a simple risk prediction rule for noncardiac surgery. Ann Surg. 2012;255(4):696-702.
Ljungqvist O, Scott M, Fearon KC. Enhanced Recovery After Surgery: a review. JAMA Surg. 2017;152(3):292-298.
Punjasawadwong Y, Phongchiewboon A, Bunchungmongkol N. Bispectral index for improving anaesthetic delivery and postoperative recovery. Cochrane Database Syst Rev. 2014;(6):CD003843.
Pearse RM, Harrison DA, MacDonald N, et al. Effect of a perioperative, cardiac output-guided hemodynamic therapy algorithm on outcomes following major gastrointestinal surgery: a randomized clinical trial and systematic review. JAMA. 2014;311(21):2181-2190.
Sessler DI, Khanna AK. Perioperative myocardial injury and the contribution of hypotension. Intensive Care Med. 2018;44(6):811-822.
Moher D, Liberati A, Tetzlaff J, et al. Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement. BMJ. 2009;339:b2535.
Higgins JPT, Thomas J, Chandler J, et al. Cochrane Handbook for Systematic Reviews of Interventions version 6.2. Cochrane, 2021.
Lefebvre C, Glanville J, Briscoe S, et al. Searching for and selecting studies. In: Higgins JPT, Thomas J, eds. Cochrane Handbook for Systematic Reviews of Interventions. 2019:67-108.
Methley AM, Campbell S, Chew-Graham C, et al. PICO, PICOS and SPIDER: a comparison study of specificity and sensitivity in three search tools for qualitative systematic reviews. BMC Health Serv Res. 2014;14:579.
Bell ML, Whitehead AL, Julious SA. Guidance for using pilot studies to inform the design of intervention trials with continuous outcomes. Clin Epidemiol. 2018;10:153-157.
Edwards P, Clarke M, DiGuiseppi C, et al. Methods to increase response to postal and electronic questionnaires. Cochrane Database Syst Rev. 2009;(3):MR000008.
Murad MH, Sultan S, Haffar S, et al. Methodological quality and synthesis of case series and case reports. BMJ Evid Based Med. 2018;23(2):60-63.
Sterne JAC, Savović J, Page MJ, et al. RoB 2: a revised tool for assessing risk of bias in randomised trials. BMJ. 2019;366:l4898.
Wells GA, Shea B, O'Connell D, et al. The Newcastle-Ottawa Scale (NOS) for assessing the quality of nonrandomised studies in meta-analyses. BMJ. 2013;346:e7586.
Popay J, Roberts H, Sowden A, et al. Guidance on the conduct of narrative synthesis in systematic reviews. J Epidemiol Community Health. 2006;59(Suppl 1):A7.
DerSimonian R, Laird N. Meta-analysis in clinical trials revisited. Contemp Clin Trials. 2015;45(Pt A):139-145.
Deeks JJ, Higgins JPT, Altman DG. Analysing data and undertaking meta‐analyses. In: Cochrane Handbook for Systematic Reviews of Interventions. 2019:241-284.
Aronson JK, Ferner RE. Analysis of reports of unintended harm associated with medicines: implications for practice and regulation. Drug Saf. 2010;33(7):597-601.
Sterne JAC, Sutton AJ, Ioannidis JPA, et al. Recommendations for examining and interpreting funnel plot asymmetry in meta-analyses of randomised controlled trials. BMJ. 2011;343:d4002.
Hasson F, Keeney S, McKenna H. Research guidelines for the Delphi survey technique. J Adv Nurs. 2000;32(4):1008-1015.
Diamond IR, Grant RC, Feldman BM, et al. Defining consensus: a systematic review recommends methodologic criteria for reporting of Delphi studies. J Clin Epidemiol. 2014;67(4):401-409.
Beauchamp TL, Childress JF. Principles of Biomedical Ethics. 7th ed. Oxford University Press; 2013.
Booth A, Clarke M, Dooley G, et al. The nuts and bolts of PROSPERO: an international prospective register of systematic reviews. Syst Rev. 2012;1:2.
Grant MJ, Booth A. A typology of reviews: an analysis of 14 review types and associated methodologies. Health Info Libr J. 2009;26(2):91-108.
Moher D, Shamseer L, Clarke M, et al. Preferred reporting items for systematic review and meta-analysis protocols (PRISMA-P) 2015 statement. Syst Rev. 2015;4:1.
Weiser TG, Haynes AB, Molina G, et al. Estimate of the global volume of surgery in 2012: an assessment supporting improved health outcomes. Lancet. 2015;385(S11).
Maile MD, Engoren MC, Tremper KK, et al. Worsening preoperative heart failure is associated with mortality and noncardiac complications, but not myocardial infarction after noncardiac surgery. Anesth Analg. 2014;119(3):522-532.
Botto F, Alonso-Coello P, Chan MT, et al. Myocardial injury after noncardiac surgery: a large, international, prospective cohort study establishing diagnostic criteria, characteristics, predictors, and 30-day outcomes. Anesthesiology. 2014;120(3):564-578.
Hamilton MA, Cecconi M, Rhodes A. A systematic review and meta-analysis on the use of preemptive hemodynamic intervention to improve postoperative outcomes in moderate and high-risk surgical patients. Anesth Analg. 2011;112(6):1392-1402.
Guay J, Choi PT, Suresh S, et al. Neuraxial anesthesia for the prevention of postoperative mortality and major morbidity: an overview of Cochrane systematic reviews. Anesth Analg. 2014;119(3):716-725.
Todd MM, Warner DS, Sokoll MD, et al. A prospective, comparative trial of three anesthetics for elective supratentorial craniotomy. Anesthesiology. 1993;78(6):1005-1020.
Martini CH, Boon M, Bevers RF, et al. Evaluation of surgical conditions during laparoscopic surgery in patients with moderate vs deep neuromuscular block. Br J Anaesth. 2014;112(3):498-505.
Memtsoudis SG, Sun X, Chiu YL, et al. Perioperative comparative effectiveness of anesthetic technique in orthopedic patients. Anesthesiology. 2013;118(5):1046-1058.
Dexter F, Bayman EO, Epstein RH. Statistical modeling of average and variability of time to extubation for meta-analysis comparing desflurane to sevoflurane. Anesth Analg. 2010;110(2):570-580.
Miller TE, Thacker JK, White WD, et al. Reduced length of hospital stay in colorectal surgery after implementation of an enhanced recovery protocol. Anesth Analg. 2014;118(5):1052-1061.
Myles PS, Leslie K, McNeil J, et al. Bispectral index monitoring to prevent awareness during anaesthesia: the B-Aware randomised controlled trial. Lancet. 2004;363(9423):1757-1763.
Grocott MP, Dushianthan A, Hamilton MA, et al. Perioperative increase in global blood flow to explicit defined goals and outcomes after surgery: a Cochrane systematic review. Br J Anaesth. 2013;111(4):535-548.
Gustafsson UO, Scott MJ, Hubner M, et al. Guidelines for perioperative care in elective colorectal surgery: Enhanced Recovery After Surgery (ERAS®) Society recommendations: 2018. World J Surg. 2019;43(3):659-695.
Apfelbaum JL, Connis RT, Nickinovich DG, et al. Practice advisory for preanesthesia evaluation: an updated report by the American Society of Anesthesiologists Task Force on Preanesthesia Evaluation. Anesthesiology. 2012;116(3):522-538.
Weiser TG, Regenbogen SE, Thompson KD, et al. An estimation of the global volume of surgery: a modelling strategy based on available data. Lancet. 2008;372(9633):139-144.
Pearse RM, Moreno RP, Bauer P, et al. Mortality after surgery in Europe: a 7 day cohort study. Lancet. 2012;380(9847):1059-1065.
Sessler DI, Meyhoff CS, Zimmerman NM, et al. Period-dependent associations between hypotension during and for four days after noncardiac surgery and a composite of myocardial infarction and death: a substudy of the POISE-2 trial. Anesthesiology. 2018;128(2):317-327.
Shafer SL, Stanski DR. Defining depth of anesthesia. Handb Exp Pharmacol. 2008;(182):409-423.
Gan TJ, Soppitt A, Maroof M, et al. Goal-directed intraoperative fluid administration reduces length of hospital stay after major surgery. Anesthesiology. 2002;97(4):820-826.
Wildes TS, Mickle AM, Ben Abdallah A, et al. Effect of electroencephalography-guided anesthetic administration on postoperative delirium among older adults undergoing major surgery: the ENGAGES randomized clinical trial. JAMA. 2019;321(5):473-483.
Pearse R, Dawson D, Fawcett J, et al. Early goal-directed therapy after major surgery reduces complications and duration of hospital stay. A randomised, controlled trial. Crit Care. 2005;9(6):R687-R693.
Bilotta F, Spinelli A, Giovannini F, et al. The effect of propofol or sevoflurane anaesthesia on S100β, troponin I and middle cerebral artery flow velocity in non-cardiac surgery. Eur J Anaesthesiol. 2007;24(9):780-789.
Hansen EG, Duedahl TH, Rømsing J, et al. Intra-operative ventilation with sevoflurane in surgical patients: incidence of arrhythmias. J Clin Anesth. 2010;22(7):485-490.
Scott MJ, Baldini G, Fearon KC, et al. Enhanced Recovery After Surgery (ERAS) for gastrointestinal surgery, part 1: pathophysiological considerations. Acta Anaesthesiol Scand. 2015;59(10):1212-1231.
Ljungqvist O, Søreide E. Preoperative fasting. Br J Surg. 2003;90(4):400-406.
Fleisher LA, Barash PG. Preoperative cardiac evaluation for noncardiac surgery: a functional approach. Anesth Analg. 1992;74(4):586-598.
Drummond MF, Sculpher MJ, Claxton K, et al. Methods for the Economic Evaluation of Health Care Programmes. 4th ed. Oxford University Press; 2015.
Wijeysundera DN, Beattie WS, Austin PC, et al. Non-invasive cardiac stress testing before elective major non-cardiac surgery: population based cohort study. BMJ. 2010;340:b5526.
Vincent JL, Rhodes A, Perel A, et al. Clinical review: update on hemodynamic monitoring—a consensus of 16. Crit Care. 2011;15(4):229.
Radtke FM, Franck M, Lendner J, et al. Monitoring depth of anaesthesia in a randomized trial decreases the rate of postoperative delirium but not postoperative cognitive dysfunction. Br J Anaesth. 2013;110(S1):i98-i105.
Chan MT, Cheng BC, Lee TM, et al. BIS-guided anesthesia decreases postoperative delirium and cognitive decline. J Neurosurg Anesthesiol. 2013;25(1):33-42.
Boney O, Moonesinghe SR, Myles PS, et al. Standardizing endpoints in perioperative research: a systematic approach for the Standardized Endpoints for Perioperative Medicine (StEP) initiative. Br J Anaesth. 2016;116(6):713-720.
Myles PS, Grocott MP, Boney O, et al. Standardizing end points in perioperative trials: towards a core and extended outcome set. Br J Anaesth. 2016;116(5):586-589.
Weiser TG, Haynes AB. Ten years of the Surgical Safety Checklist. Br J Surg. 2018;105(8):927-929.
Ghaferi AA, Birkmeyer JD, Dimick JB. Variation in hospital mortality associated with inpatient surgery. N Engl J Med. 2009;361(14):1368-1375.
Lee HC, Ryu HG, Chung EJ, et al. Prediction of bispectral index during target-controlled infusion of propofol and remifentanil: a deep learning approach. Anesthesiology. 2018;128(3):492-501.
Eckhardt K, Li S, Ammon S, et al. Same incidence of adverse drug events after codeine administration irrespective of the genetically determined differences in morphine formation. Pain. 1998;76(1-2):27-33.
Chilkoti G, Wadhwa R, Saxena A. Technological advances in perioperative monitoring: current concepts and clinical perspectives. J Anaesthesiol Clin Pharmacol. 2015;31(1):14-24.
Kamdar NV, Huverserian A, Jalilian L, et al. Development, implementation, and evaluation of a telemedicine preoperative evaluation initiative at a major academic medical center. Anesth Analg. 2020;131(6):1647-1656.
Moonesinghe SR, Harris S, Mythen MG, et al. Survival after postoperative morbidity: a longitudinal observational cohort study. Br J Anaesth. 2014;113(6):977-984.
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