| Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values | 
| Removal of ventricular catheter with synchronous replacement | Is a | Replacement of ventricular catheter | true | Inferred relationship | Existential restriction modifier |  |  | 
| Removal of ventricular catheter with synchronous replacement | Is a | Removal of cerebral ventricular catheter | false | Inferred relationship | Existential restriction modifier |  |  | 
| Removal of ventricular catheter with synchronous replacement | Procedure site | Brain ventricle structure | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Removal of ventricular catheter with synchronous replacement | Method | Implantation - action | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Removal of ventricular catheter with synchronous replacement | Revision status | Revision - value | false | Inferred relationship | Existential restriction modifier |  |  | 
| Removal of ventricular catheter with synchronous replacement | Direct device | Catheter, device | false | Inferred relationship | Existential restriction modifier | 4 |  | 
| Removal of ventricular catheter with synchronous replacement | Procedure site | Structure of brain cerebrospinal fluid pathway | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Removal of ventricular catheter with synchronous replacement | Direct device | Appliance | false | Inferred relationship | Existential restriction modifier |  |  | 
| Removal of ventricular catheter with synchronous replacement | Method | Removal - action | false | Inferred relationship | Existential restriction modifier |  |  | 
| Removal of ventricular catheter with synchronous replacement | Method | Surgical action | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Removal of ventricular catheter with synchronous replacement | Direct device | Ventricular shunt | false | Inferred relationship | Existential restriction modifier |  |  | 
| Removal of ventricular catheter with synchronous replacement | Method | Reimplantation - action | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Removal of ventricular catheter with synchronous replacement | Using | Catheter, device | false | Inferred relationship | Existential restriction modifier |  |  | 
| Removal of ventricular catheter with synchronous replacement | Method | Replacement - action | true | Inferred relationship | Existential restriction modifier | 1 |  | 
| Removal of ventricular catheter with synchronous replacement | Procedure site | Brain ventricle structure | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Removal of ventricular catheter with synchronous replacement | Procedure site | Brain ventricle structure | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Removal of ventricular catheter with synchronous replacement | Procedure site | Brain ventricle structure | false | Inferred relationship | Existential restriction modifier | 3 |  | 
| Removal of ventricular catheter with synchronous replacement | Procedure site | Brain ventricle structure | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Removal of ventricular catheter with synchronous replacement | Procedure site | Brain ventricle structure | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Removal of ventricular catheter with synchronous replacement | Procedure site | Brain ventricle structure | false | Inferred relationship | Existential restriction modifier | 3 |  | 
| Removal of ventricular catheter with synchronous replacement | Procedure site | Brain ventricle structure | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Removal of ventricular catheter with synchronous replacement | Procedure site | Brain ventricle structure | false | Inferred relationship | Existential restriction modifier | 3 |  | 
| Removal of ventricular catheter with synchronous replacement | Is a | Removal of cerebral ventricular catheter | false | Inferred relationship | Existential restriction modifier |  |  | 
| Removal of ventricular catheter with synchronous replacement | Procedure site - Indirect | Brain ventricle structure | true | Inferred relationship | Existential restriction modifier | 1 |  | 
| Removal of ventricular catheter with synchronous replacement | Method | Removal - action | false | Inferred relationship | Existential restriction modifier | 3 |  | 
| Removal of ventricular catheter with synchronous replacement | Direct device | Catheter, device | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Removal of ventricular catheter with synchronous replacement | Direct device | Catheter, device | false | Inferred relationship | Existential restriction modifier | 3 |  | 
| Removal of ventricular catheter with synchronous replacement | Is a | Catheterization | false | Inferred relationship | Existential restriction modifier |  |  | 
| Removal of ventricular catheter with synchronous replacement | Is a | Brain implantation | false | Inferred relationship | Existential restriction modifier |  |  | 
| Removal of ventricular catheter with synchronous replacement | Method | Insertion - action | false | Inferred relationship | Existential restriction modifier |  |  | 
| Removal of ventricular catheter with synchronous replacement | Procedure site | Structure of brain cerebrospinal fluid pathway | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Removal of ventricular catheter with synchronous replacement | Direct device | Catheter, device | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Removal of ventricular catheter with synchronous replacement | Direct device | Catheter, device | false | Inferred relationship | Existential restriction modifier | 3 |  | 
| Removal of ventricular catheter with synchronous replacement | Direct device | Catheter, device | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Removal of ventricular catheter with synchronous replacement | Direct device | Catheter, device | false | Inferred relationship | Existential restriction modifier | 3 |  | 
| Removal of ventricular catheter with synchronous replacement | Direct device | Catheter, device | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Removal of ventricular catheter with synchronous replacement | Direct device | Catheter, device | false | Inferred relationship | Existential restriction modifier | 3 |  | 
| Removal of ventricular catheter with synchronous replacement | Direct device | Ventricular intracranial catheter, device | true | Inferred relationship | Existential restriction modifier | 1 |  | 
| Removal of ventricular catheter with synchronous replacement | Procedure site - Indirect | Brain ventricle structure | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Removal of ventricular catheter with synchronous replacement | Method | Surgical removal - action | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Removal of ventricular catheter with synchronous replacement | Direct device | Ventricular intracranial catheter, device | false | Inferred relationship | Existential restriction modifier | 2 |  |