View clinical trials related to Cerebral Ventriculitis.
Filter by:External ventricular drains (EVD) are small tubes used in neuro-critical care inserted to measure pressure and treat acute build-up of fluid in the brain by draining the cerebrospinal fluid (CSF) in the ventricles, often following an event of traumatic or spontaneous bleeding. While essential to the care of these patients, EVDs run the risk of introducing bacteria into the brain of the patient, causing an EVD associated infection (EVDI). EVDIs are feared complications that are difficult to identify and predict in an intensive care setting. In order to allow for early identification of these infections, CSF is routinely sampled from the EVDs and its constitution analyzed for signs of infection. However, the constitution of the CSF in neuro-critical care patients are often difficult to assess as it is frequently mixed with blood that often clouds clinical decision making. No fast parameter has been found to yet reliably predict or identify these infections, resulting in excessive treatment with broad-spectrum antibiotics in this patient group. EVDI diagnostics rely on mainly CSF analyses and cultures (growth of bacteria in the laboratory). Growing bacteria in the lab may take many days and can seldom guide early decision-making for these infections. Thus, EVDI diagnostics mainly rely on the analysis of the CSF constitution. Many diagnostic criteria rely on the relationship between white and red blood cells in the CSF, with red blood cells being introduced in the CSF following the brain bleed , and white blood cells being seen as a response to infection. These criteria assume that the blood is homogeneous in the CSF. However, from computed tomography (CT) imaging of these patients, it is seen that blood can settle in the brain ventricles. In this study we aim to test the assumption that blood is homogeneously distributed in the CSF by sampling from the CSF in patients. Two samples are serially drawn allocated to a period between where patients are planned for a clinical repositioning, or not. We hypothesise that a heterogeneous distribution of blood in the CSF (as seen on CT imaging) may allow for the CSF constitution to change in serially drawn CSF samples, and that these changes may be exacerbated in repositioned patients as it may disturb the blood that has settled at the bottom of the ventricles as a result of gravity sedimentation. We further believe that these changes may affect clinical decision making and further complicate EVDI diagnostics.
Therapeutic drug monitoring of antibiotics in critically ill patients is a present research topic of the last ten years. Research results have shown subtherapeutic blood concentrations in those patients. However, the amount of antibiotics in the cerebrospinal fluid (CSF) in patients with ventriculitis or meningitis is still unclear. This study is a prospective study to evaluate the concentration of different antibiotics in the CSF in patients with an external ventricular drainage compared to antibiotic blood concentration.