The advantages of a ventriculostomy reservoir with the Holter valve system.

The use of a Rickham ventriculostomy reservoir incorporated in the Holter valve system is advocated. In a retrospective study of 173 button tape, the clinical assessment of the valve was proved correct in 51% of occasions and in a prospective review of 100 taps the clinical findings were correct in 53%. The complication rate of tapping the reservoir is negligible.