| Not Yet Recruiting | Effect of taVNS on Perioperative Anxiety in Major Abdominal Surgery NCT07495163 | Second Affiliated Hospital, School of Medicine, Zhejiang University | N/A |
| Not Yet Recruiting | Optimal Interval for Periodic Alveolar Recruitment Maneuvers Achieving 90% Lung Re-expansion During Intraopera NCT07239557 | Sixth Affiliated Hospital, Sun Yat-sen University | N/A |
| Unknown | Glycocalyx Monitoring in Major Abdominal Surgery NCT06285526 | University Hospital, Rouen | — |
| Completed | Comparison of Hemodynamic Effects of Two Modalities of Alveolar Recruitment Maneuvers in Major Abdominal Surge NCT05365113 | University Hospital, Clermont-Ferrand | N/A |
| Completed | Persistent Opioid Consumption After Major Abdominal Surgery and Its Determinants NCT05197465 | Centre hospitalier de l'Université de Montréal (CHUM) | — |
| Unknown | Immunomodulatory Effects of Dexmedetomidine Infusion NCT04923737 | Alexandria University | N/A |
| Unknown | Preoperative Oral Carbohydrate Loading Versus Fasting in Patients Undergoing Major Abdominal Surgery NCT06243367 | Tanta University | N/A |
| Completed | Evaluation of the Early Use of Norepinephrine in Major Abdominal Surgery on Postoperative Organ Dysfunction NCT05276596 | Centre Hospitalier Universitaire, Amiens | Phase 3 |
| Completed | Effects of Lavender Aromatherapy and Cold Application on Pain During Drain Removal NCT04798040 | Muğla Sıtkı Koçman University | N/A |
| Completed | Cardiac Output Response to Vasopressin Infusion In Abdominal Surgery Patients Under Mechanical Ventilation NCT04935814 | University Hospital, Clermont-Ferrand | Phase 4 |
| Completed | Triamcinolone Versus Methylprednisolone in Transversus Abdominis Plane Block NCT04480775 | ghada fouad | Phase 2 / Phase 3 |
| Completed | Bolus Versus Continuous Enteral Tube Feeding NCT04080479 | University Hospital Ostrava | N/A |
| Completed | ValidationTurkishVersionQualityofRecovery-15 NCT06456918 | Ankara University | — |
| Unknown | Ketamine Versus Propofol Effect on the Immune-mediatory Response for Abdominal Surgery NCT03793075 | Mansoura University Hospital | N/A |
| Completed | Can the Use of Ear Plugs and Eye Masks Help to Improve Sleep Quality After Major Abdominal Surgery? NCT03702296 | Singapore General Hospital | N/A |
| Unknown | Preoperative Intravenous Iron Infusion to Reduce Post-surgical Complications: a Pilot Randomised Control Trial NCT03295851 | Singapore General Hospital | Phase 4 |
| Completed | Individualized Goal-directed Sufentanil Administration Versus Standard Therapy in Patients Undergoing Major Ab NCT03166644 | University Hospital, Clermont-Ferrand | N/A |
| Completed | Bilateral Transversus Abdominis Plane Block With Exparel Verus Continuous Epidural Analgesia With Bupivacaine NCT02996227 | The Cleveland Clinic | N/A |
| Completed | Observational Study of the Value of Using Obstructive Sleep Apnea-hypopnea Syndrome (CPAP) Ventilation on the NCT04345354 | Poitiers University Hospital | — |
| Unknown | Paravertebral Block vs. General Anesthesia for Major Abdominal Surgery NCT02534012 | Makassed General Hospital | N/A |
| Completed | Effectivity of Incentive Spirometry on Postoperative Pulmonary Complication After Major Abdominal Surgery NCT05795608 | Dr Cipto Mangunkusumo General Hospital | N/A |
| Completed | Implementation of Computer-Assisted Intraoperative Goal-Directed Fluid Therapy NCT02978430 | Erasme University Hospital | Phase 2 |
| Completed | Preoperative Measurement of Heart Rate Variability as a Predictor of Postoperative Outcome NCT02375412 | University Hospital Ostrava | — |
| Completed | Effects of Neuromuscular Block Reversal With Sugammadex vs Neostigmine on Postoperative Respiratory Outcomes A NCT02361060 | Enrique Alday Muñoz | Phase 4 |
| Withdrawn | Effect of Pneumatic Intermittent Venous Compression on Fluid Volumes Infused During Major Abdominal Surgery NCT01403909 | Centre Hospitalier Universitaire de Nīmes | N/A |
| Completed | Intraoperative Haemodynamic Optimization Comparing Flow and Pressure Parameters NCT02104687 | University Hospital Ostrava | N/A |
| Completed | Automated Versus Manual Fluid Management for High Risk Abdominal Surgical Patient. A Prospective, Randomized T NCT01950845 | Hospices Civils de Lyon | N/A |
| Completed | REstrictive Versus LIbEral Fluid Therapy in Major Abdominal Surgery NCT02073162 | The Cleveland Clinic | N/A |
| Completed | Fluid Requirement During Surgery PVI v Doppler NCT02142816 | York Teaching Hospitals NHS Foundation Trust | N/A |
| Completed | Perioperative Hemodynamic Optimization Using the NICOM Device NCT01217151 | Hospital Universitario La Paz | N/A |
| Completed | Continuous Central Venous Oxygen Saturation Assisted Intraoperative Hemodynamic Management NCT02337010 | Domonkos Trásy | N/A |
| Completed | Albumin Kinetics in Generalized Inflammation NCT01194492 | Karolinska Institutet | Phase 4 |
| Completed | Arterial Pressure Based Cardiac Output for Goal-Directed Therapy in Abdominal Surgery NCT00549419 | Klinikum Ludwigshafen | Phase 4 |
| Completed | Immunonutrition Versus Standard Enteral Nutrition Before Major Surgery NCT00512213 | University of Lausanne Hospitals | N/A |
| Completed | Nutritional and Metabolic Evaluation of a Tube Feeding Immune Enhancing Diet in ICU Patients NCT00560157 | Société des Produits Nestlé (SPN) | Phase 4 |