Clinical Research Directory

Submental Tissue Oxygenation and Arterial Lactate in Major Surgery

During major surgical procedures performed under general anesthesia, changes in blood flow and oxygen delivery to tissues may occur due to blood loss, hemodynamic fluctuations, and anesthesia-related physiological effects. These changes can lead to impaired tissue perfusion, which is commonly reflected by increased arterial lactate levels. However, lactate measurements are intermittent and may not detect early perfusion abnormalities. This prospective observational study aims to investigate the relationship between submental tissue oxygenation measured by near-infrared spectroscopy (NIRS), microvascular reactivity assessed by the vascular occlusion test, and arterial lactate levels during major surgery. Adult patients undergoing major abdominal, neurosurgical, or orthopedic procedures will be monitored intraoperatively using non-invasive NIRS techniques, while arterial blood gas analyses will be performed as part of routine clinical care. The study does not involve any changes to standard anesthesia or surgical management. All treatments and clinical decisions will be made by the responsible care team according to routine practice. By evaluating non-invasive indicators of tissue oxygenation and microvascular function, this study aims to improve the understanding of early intraoperative tissue perfusion changes and their association with metabolic markers.

Morbidity and Mortality: Surgery and Standardized Transmission in Operating Room

The primary objective of the study is to evaluate the efficacy of standard handover with AnesList© between physician anesthesists in operating room, for a complete transmission for a patient, on the occurence of event as death, serious complications or rehospitalization in month of postoperative after major surgery.

LANdiolol to Avoid TAchycardia in Patients at Risk for Cardiovascular Events Undergoing Major Non-cardiac Surgery

Limiting perioperative tachycardia (aiming for a heart rate \<90 beats per minute throughout the perioperative period) using the ultra-short acting beta-blocker landiolol in patients with cardiovascular risk factors undergoing major surgery might lower the incidence of perioperative myocardial injury. Feasibility of the intervention needs to be proven prior to conduction of a larger trial.

The GUARDIAN Trial - Induction Agent Sub-Study

This is a sub-study of the overall GUARDIAN trial (NCT04884802) in which some GUARDIAN trial participants will be additionally randomized to etomidate vs propofol for anesthetic induction.

Prehabilitation in Oncological Patients Undergoing Major Gastrointestinal Surgery (PROGRESS)

The importance of postoperative rehabilitation on physical performance and recovery is well-recognized. However, the preoperative period constitutes a unique opportunity to address comorbidities and modifiable risk factors, improve functional capacity and address deficiencies in physiologic reserve, which might otherwise preclude surgery or significantly impede recovery. Therefore, the aim of this study is to evaluate the efficacy of a multimodal program of prehabilitation in patients undergoing major oncological gastrointestinal surgery. The hypothesis is that severe post-operative complications within 30 days will be reduced in the treatment group compared to the control group.

Analgesic Efficacy of Intravenous Ketamine as a Continuous Infusion vs PCA in the Management of Acute Postoperative Pain in Major Orthopedic Surgery.

The goal of this clinical trial is to determine whether treating pain after surgery with ketamine is more effective when administered intravenously as a continuous infusion or through a patient-controlled analgesia (PCA) pump. This study focuses on adult volunteers following major orthopedic surgery. We have two main questions to address: * Is a continuous intravenous infusion of ketamine as effective as ketamine administered through a PCA pump for managing pain after major orthopedic surgery. * Does a continuous intravenous infusion of ketamine result in lower opioid requirements compared to ketamine delivered through a PCA pump for pain management after major orthopedic surgery? Participants will be divided into two groups. One group will receive ketamine via continuous infusion, while the other will receive it through a PCA pump. Both groups will also receive a placebo (a substance that looks like the drug but contains no active ingredients), ensuring that neither group knows whether they are receiving ketamine through the PCA pump (which always contains a painkiller) or as a continuous infusion. Participants will be assigned to one of the two groups and will receive their assigned treatment for 48 hours while hospitalized. Researchers will visit participants during their first three days in the hospital to assess their pain levels and monitor for any side effects.

Multimodal Prehabilitation for Surgery in the Elderly: a Randomised, Prospective, Multicenter, Multidisciplinary Trial

This multicentric, randomised controlled trial is to the investigators knowledge the first implementation of a multimodal, multidisciplinary prehabilitation approach using knowledge from different specialties to lower complications and to increase cost effectiveness after major surgery in elderly, frail patients.