Clinical trials

Cognitive impairments such as memory impairments, word-finding difficulties, compromised orientation and perception are often observed in stroke patients. Low serum-mg-concentrations are associated with cognitive impairments in ischemic stroke patients one month after stroke onset. It is not clear, if cognitive impairments after stroke is caused by the mg-deficiency or by the stroke itself. Until now, no studies investigating the relationship between mg-concentration, stroke severity and cognition during treatment course are available. Thus, this study aimed to investigate the relationship between mg-concentration and cognition of stroke patients.

Accurately determining the level of consciousness in patients with severe brain injury is essential for treatment planning, prognosis, and ethical decision-making. Clinically, levels of consciousness are differentiated into coma, Unresponsive Wakefulness Syndrome (UWS), and Minimally Conscious State (MCS) based on behavioral signs. Although behavioral assessment is considered the clinical gold standard, it is prone to misclassification. Research has shown that a substantial proportion of patients initially diagnosed with UWS may actually show signs of minimal consciousness, which is associated with better cognitive abilities and a more favorable prognosis. The Coma Recovery Scale-Revised (CRS-R) is internationally recommended for diagnosing disorders of consciousness, but it is time-consuming and not free from diagnostic error. Repeated assessments can significantly improve diagnostic accuracy. To enhance feasibility in routine clinical practice, a shorter and more time-efficient assessment tool, the Simplified Evaluation of CONsciousness Disorders (SECONDs), was developed. This scale focuses on the behavioral signs most strongly associated with MCS and uses optimized testing procedures while maintaining high diagnostic accuracy. The aim of this study is to further evaluate diagnostic approaches for assessing consciousness in patients with severe brain injury and to improve the reliability and clinical applicability of these assessments.

This prospective observational study investigates whether electroencephalography (EEG) can improve the differentiation between unresponsive wakefulness syndrome (UWS) and minimally conscious state (MCS) in patients with severe acquired brain injury. The study further examines the association between EEG markers of auditory processing and long-term functional outcome at 12 months.

The study aims to identify factors that predict the medium and long-term outcome of patients with disorders of consciousness (DOC) undergoing early neurological rehabilitation. In this prospective, observational study, 130 DOC patients are going to be included (36 months). At study entry, different routine data, disease severity and functional status are documented for each patient. In addition, MRI, EEG and evoked potentials are measured within the first week. The level of consciousness is recorded with the Coma-Recovery-Scale-Revised and serves as the primary outcome parameter. Complications, comorbidities, functional status and leve of consciousness are assessed weekly. After eight weeks, the measurement of the MRI, the EEG and the evoked potentials are repeated. After 3, 6 and 12 months, the Glasgow Outcome Scale-Revised is used to followed up the current status of the patients.

It is known that even in patients with severe disorders of consciousness (DOC), the perception of known stimuli triggers emotional reactions that can be interpreted as an expression of a residual function of consciousness. Music therapy has a long tradition in neurological rehabilitation. Frequently, active therapies with own music making and singing are implemented in clinical settings. In DOC patients, it is more likely to use passive music listening. However, findings on effectiveness are limited, as only a few studies have systematically investigated the effects of music therapy in this population. Therefore, the investigators want to investigate the effectiveness of passive listening to preferred music on the level of consciousness.

Neuropsychological and functional long-term consequences of subarachnoid hemorrhages (SAH) represent a great challenge, since sometimes considerable cognitive deficits occur without evidence of substantial brain damage. In this study, we want to examine if the frequently observed memory deficits are associated with hippocampal atrophy.