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Ventricular catheter placement grading scale, adapted to include failed procedures.[11]
| Grade | Description |
|---|---|
| 1 | Appropriately placed catheter in the ipsilateral frontal horn including tip of the 3rd ventricle |
| 2 | Suboptimal placement in the contralateral frontal horn, corpus callosum or interhemispheric fissure |
| 3 | Suboptimal placement in other brain parenchyma or other fluid filled spaces |
| 4 | Failed procedure |
