EVD/Ventric draining vs monitoring


So can you monitor accurately and drain at the same time? Does it depend on a brand? I was always told it was one or the other but this place swears you can do both.

MaxAttack, BSN, RN

Specializes in Trauma/surgical/neuro critical care. Has 7 years experience. 396 Posts

No. You'll get a number but it won't be accurate. ICP monitoring works by transmitting the actual pulsations to the transducer. If the drain is open then the tubing terminates in a chamber filled with air which would allow some of the pressure to be expelled. Think of pressure inside a hose when you put your thumb over it vs when it's open.

Pressure monitoring and air don't mix, whether it's in the tubing or at the end of it.



19 Posts

Thanks! They also apparently had zeroed the EVD wrong too since they were discussing it