Active clinical trials for "Brain Death"

The objective of this study is to quantify the association between tissue oxygen saturation (StO2) during the donor management phase of the Death by Neurological Criteria (DNC) organ donor and the number of organs transplanted per donor.

RBC requirement ein DBD and DCD liver transplants

The investigators plan a secondary data analysis of an existing dataset to examine how individual decision-making differs from family decision-making in organ donation.

This study examines muscle movements of elecromyography in adults with brain death. Half of the participants will have brain death, the other half will be healthy volunteers.

Study hypothesize that ocular microcirculation is reflecting cerebral perfusion. The purpose of this study is to evaluate ocular microcirculation in brain dead patients using side dark field (SDF) videomicroscope and compare it with microcirculatory parameters of healthy volunteers.

In France the diagnosis of brain death relies on electroencephalography (EEG) or cerebral angiography. Concerning the latter a time of 6 hours is mandatory between the clinical diagnosis and the realization of the cerebral computed tomography (CT) angiography. Transcranial doppler (TCD) is not recommended in the french guidelines for the diagnosis of brain death. In other countries, some flow patterns allow to confirm the diagnosis of brain death. The hypothesis of our study is that TCD could shorten the time between the clinical diagnosis of brain death and the realization of the CT angiography.

There is currently a shortage of organ in France, for patients with chronic diseases who are on the waiting list for an organ. The first source of organ donor in France is patients with brain death. 58% of patients in brain death are patients with a severe stroke ( ischemic or hemorrhagic). In order to identify which patient with a severe stroke and with unfavorable prognosis who can evolve to brain death, we have conducted a retrospective study in Lorrain, in France, and we have built a predictive score of brain death in these patients. It is important to validate this predictive score in a prospective study on a greater scale than the first study.

At present, different countries have different standards for the diagnosis of brain death, but according to the classic brain death confirmation test, it needs to be combined with transcranial Doppler, EEG, evoked potential and apnea test in clinical practice. Some patients cannot undergo a complete clinical examination and apnea test due to certain factors, and the determination of brain death is limited. The American Academy of Neurology (AAN) guidelines regard cerebral angiography as an acceptable auxiliary examination and is widely regarded as the gold standard for cerebral blood flow evaluation. CT cerebrovascular angiography (CTA) is a noninvasive and widely used examination method that can identify missing or severely reduced cerebral blood flow. However, due to limited experience and lack of sufficient evidence to prove its reliability, it is not included in the AAN A recognized auxiliary examination; there are also a large number of domestic and foreign literature reports that CTA can be used as a new confirmation test for clinical judgment of brain death. This study aims to explore the value of CTA in the judgment of patients with brain death.

This study aims to evaluate brain death with optical probes. The changes of hemodynamic parameters including oxyhemoglobin (HbO2) and deoxyhemoglobin (Hb) were detected by near infrared spectroscopy probes attached on the forehead of patients. A multiple-phase protocol at varied fraction of inspired O2 were utilized during the assessment.

This study aims to assess brain death and deep coma with the self-made near infrared spectroscopy (NIRS) instrument. The investigators used the noninvasive method to monitor the Δ[HbO2] (the concentration changes in oxy-hemoglobin) and Δ[Hb] (the concentration changes in deoxy-hemoglobin) in the region around the forehead of medically evaluated participating patients and healthy subjects. A multiple-phase protocol at varied fraction of inspired O2 were utilized during the assessment.