View clinical trials related to Cerebral Oxygenation.
Filter by:The brain is a very vulnerable organ, especially in premature babies, newborns and infants. However, during anesthesia, the oxygenation of the brain can only be monitored indirectly and insufficiently. Near-infrared spectroscopy (NIRS) is an established monitoring method in other areas (e.g., neonatology, cardiac anesthesia), which provides non-invasive information about the regional oxygen supply of the brain. The integration of this monitoring device into the anaesthesiological care for neonates and infants could reduce the risk of cerebral hypoxia. The planned study investigates whether the use of NIRS in anesthetized children up to 6 months can prevent or influence the occurrence of cerebral hypoxia.
Ageing is accompanied by a cognitive decline altering gait and increasing the risk of falling. Physical activity could reduce this cognitive decline by an improvement in the oxygen supply to the brain. At the moment, the effect of physical activity on brain oxygenation during walking in elderly has never been described. Moreover, the increase in cognitive request during a dual task could lead to an increase in the risk of falling. In this context, the investigators of Orleans's hospital want to examine the effect of the physical activity level of elderly on their brain oxygenation during walking and during a dual task. Moreover, Parkinson' patients could display an impairment of gait and cognitive function. Attentional task and dual task situation are particularly impaired in this pathology. This is why the investigators of Orleans's hospital want to also examine cerebral activation of these patients during walking and during a dual task. The hemodynamic cerebral activation will be studied using the near infrared spectroscopy at the level of the prefrontal cortex. This non-invasive technic allows the evaluation of the regional oxyhemoglobin and deoxyhemoglobin variations induced by cerebral activation.
The proper management of brain oxygenation is an essential component of all anesthesiologic procedures. Nevertheless, the brain remains one of the least monitored organs in the perioperative phase and intensive care therapy. In the current study the effects of continuous positive airway pressure (CPAP) with different ventilation parameters (FiO2 21% - 50% - 100%) on cerebral and peripheral oxygenation (rSO2) will be examined. The INVOS Brain oximeter (IBO) is a reliable trend monitor for changes in regional cerebral oxygenation (rSO2). Therefore rSO2 will be measured on the forehead and the arm. In a randomised way the rSO2 will be monitored for 30 minutes (3x10min) with different FiO2 settings. The randomisation refers to the order of the applied FiO2, each patient is therefore its own control. Additionally vital parameters (heart rate, blood pressure, SpO2) will be recorded and blood gas analysis will be performed.
Sudden cardiac death is one of the main causes of morbidity and mortality worldwide. Cardiac arrest requires prompt intervention by cardiopulmonary resuscitation (CPR). The resuscitation guidelines are the current recommendations for CPR and are revised by expert panels such as the "European Resuscitation Council (ERC)". Up to now, a parameter for assessing the quality of CPR is missing and further monitoring methods are urgently needed. Near-infrared spectroscopy (NIRS) is a portable method for measuring regional oxygen levels in the brain. Recent clinical trials suggest that cerebral oxygenation measured by NIRS may correlate with survival and outcome after cardiac arrest. The investigators propose that NIRS technology may not only be suitable to determine or predict the outcome of the patients, but could also be a useful tool to guide the CPR providers to optimize the CPR techniques and guide the individual treatments/interventions. The present study was therefore designed to determine if NIRS guided CPR with the aim to optimize NIRS values is superior compared to the current standard practice according to published CPR guidelines (return of spontaneous circulation [ROSC] rate, short and long-term cerebral performance).
The main goal of this project is to investigate how low intensity cycling exercise (1.5W/kg, for 6 minutes) influences cerebral functions, such as: Cerebral blood flow, oxygenation, and other physiological variables in different normobaric and hypobaric hypoxic conditions.
The purpose of this study is to determine whether cerebral blood flow and cerebral tissue oxygenation is most dependent on cardiac output or on mean arterial pressure in patients undergoing cardiac surgery with the use of cardiopulmonary bypass.
Aim oft he study is to compare two different devices for cerebral oximetry (FORE-SIGHTTM Monitor (CAS Medical Systems, Branford, Connecticut, USA and INVOSTM Somanetics, Troy, Michigan, USA) in patients undergoing surgical carotid thrombendarterectomy (cTEA) with crossclamped internal carotid artery (ACI). All procedures will be performed in regional anesthesia, therefore the patients will be awake and direct neurological examination during the procedure will be possible, giving information how the drop in cerebral saturation (measured with INVOS and FORESIGHT both on the same patient) correlates with any clinical symptoms. We expect to see a difference in the total drop and in the delay of the drop of cerebral oxygen saturation, making it possible to detect varieties in specificity and sensitivity of both devices compared to neurologic examination in the awake patient.
- Due to the increased risk of brain damage, continuous monitoring of the cerebral oxygenation is interesting. We will evaluate the capability of the INVOS Oximeter to detect induced changes in the cerebral regional saturation. - The purpose of the study is to investigate our hypothesis that a particular CPAP flow pressure optimizes the regional cerebral oxygenation.
The aim of the study is to compare the values of cerebral tissue oxygenation measured simultaneously using laser light (FORE-SIGHT) and LED (INVOS) cerebral oximeters.
Near infrared spectrophotometry (NIRS) offers the possibility of noninvasive and continuous bedside investigation of cerebral , renal, mesenteric and peripheric oxygenation and hemodynamics, and changes in newborn period.The aim of the present study is to investigate cerebral oxygenation with NIRS method in polycythaemic infants who underwent partial exchange transfusion.