Table 3.
Shunt Complications
| Variable | Level | N | %* |
|---|---|---|---|
| Shunt Complications (N=190) | None | 150 | 79 |
| Wound infection/Meningitis/Sepsis | 9 | 5 | |
| Subdural hygroma/hematoma | 25 | 13 | |
| Shunt malfunction | 9 | 5 | |
| Shunt Interventions (N=190) | Externalization | 3 | 2 |
| Removal | 5 | 3 | |
| Revision/Repair | 9 | 5 | |
| Number of Shunt Adjustments (N=190) | 0 | 130 | 68 |
| 1 | 40 | 21 | |
| 2 | 16 | 8 | |
| 3 | 3 | 2 | |
| 4 | 1 | 1 | |
| Any symptoms referrable to subdural collection (N=25) | No | 13 | 52 |
| Yes | 12 | 48 | |
| Specific symptoms potentially referrable to subdural (N=12): | Headache | 3 | 25 |
| AMS | 5 | 42 | |
| Gait | 2 | 17 | |
| Seizure | 2 | 17 | |
| Intervention for Subdural (N=25) | None | 4 | 16 |
| Shunt program adjustment + Burr-hole Drainage | 1 | 4 | |
| Shunt program adjustment alone | 17 | 68 | |
| Shunt program adjustment + Externalization + removal | 2 | 8 | |
| Externalization + removal | 1 | 4 | |
| Indication for Shunt Externalization/Removal/Revision (N=25) | Proximal valve failure alone | 1 | 7 |
| Proximal valve and Distal failure/migration | 3 | 20 | |
| Distal failure/migration of distal catheter alone | 5 | 33 | |
| Subdural hematoma | 3 | 20 | |
| Infection | 3 | 20 |
*
Percentages may not total to 100% due to rounding.
Abbreviations: AMS=Altered mental status