For patients with hydrocephalus secondary to leptomeningeal disease, how do you determine what type of shunt device to place?

For my small part, please ask neuro-oncology if they plan to use intrathecal chemo (and need a hybrid with Ommaya).

I don't think one is especially better than another from a hydraulic point of view. The Certas Plus valve offers the "virtual off" setting so that IT chemotherapy can be allowed to circulate for a period of time before the shunt is "turned back on".