An exterior ventricular drain (EVD) is a tool used to empty cerebrospinal fluid (CSF) from the ventricles of the mind. It’s usually applied to handle intracranial strain (ICP) in sufferers with circumstances corresponding to hydrocephalus, traumatic mind harm, or subarachnoid hemorrhage. Previous to repositioning a affected person with an EVD, the drain is usually clamped. This includes quickly stopping the movement of CSF by the drainage system.
Cessation of drainage gives a number of advantages. It prevents potential siphoning, a phenomenon the place gravity causes extreme drainage of CSF, doubtlessly resulting in issues corresponding to subdural hematoma or ventricular collapse. Clamping helps to take care of a extra secure intracranial strain throughout motion, minimizing abrupt fluctuations. This follow aligns with established medical protocols aimed toward affected person security and optimum administration of neurological circumstances.
