Ventricular a. : Of or pertaining to a ventricle; bellied.

Example:
What does a symptomatic supra Ventricular rhythem disturbance mean?

Taxonomy
ventricles, ventricular system, lateral ventricles, fourth ventricle, the brain, spinal cord, third ventricle, cerebrospinal fluid, neural canal, right and left, free encyclopedia, cerebral ventricles, foramina, cerebral aqueduct, Apertures, central canal, brainstem, subarachnoid space.

Defination from the web:
ventricular system is a set of structures containing cerebrospinal fluid in the brain. It is continuous with the central ... Nowadays, magnetic resonance imaging (MRI) has superseded the use of CAT in research into the role of ventricular abnormalities in psychiatric illness. ...