Comparison among three methods of intracranial pressure recording.

Fluid-coupled recording systems are the most popular method of recording intracranial pressure (ICP), but they can be prone to blockage and infection. A series of 378 recordings of ICP was analyzed to identify complications and cases in which recording had to be discontinued prematurely because of catheter blockage. Three different methods of ICP recording were used: a ventricular catheter, a Richmond screw, and a subdural catheter. Richmond screws became blocked more often (16%) than subdural catheters (2.7%) or ventricular catheters (2.5%). Complications of infection and intracerebral hemorrhage were observed mostly in the ventricular catheter patients. Of these three methods, a subdural catheter is the preferred method of recording ICP.