Table 3.
Differences in complications due to differences in shunt treatment method (ventriculoperitoneal shunt vs. lumboperitoneal shunt).
| VP shunt (n = 417) | Number | (%) | LP shunt (n = 540) | Number | (%) | p-value |
|---|---|---|---|---|---|---|
| Chronic subdural hematoma effusion (included acute subdural hematoma) | 15 (1) | 3.5 | Chronic subdural hematoma | 21 | 3.8 | 0.783 |
| Shunt malfunction | 11 | 2.6 | Shunt malfunction | 19 | 3.5 | 0.418 |
| Infection | 6 | 1.4 | Hypotension headache | 13 | 2.4 | 0.164 |
| Hypotension headache | 5 | 1.2 | Low back·leg pain | 12 | 2.2 | 0.302 |
| Intracranial hematoma | 2 | 0.5 | Infection | 4 | 0.7 | 0.445 |
| Subcortical hematoma | 1 | 0.2 | Subcortical hematoma | 3 | 0.5 | 0.862 |
| Cerebral infarction | 1 | 0.2 | Cerebral thrombosis | 1 | 0.2 | 0.862 |
| Pneumothorax | 1 | 0.2 | Epigastric hernia | 1 | 0.2 | |
| Epigastric hernia | 1 | 0.2 | Silicon allergy | 1 | 0.2 | |
| Seizure | 1 | 0.2 | ||||
| Difficulty elevating the shoulders | 1 | 0.2 | ||||
| 43 | 10.0% | 77 | 14.1% | 0.074 |
iNPH, idiopathic normal pressure hydrocephalus; VP, ventriculoperitoneal; LP, lumboperitoneal. Data represent the number and percentage. Ventriculoperitoneal shunt malfunction: deviation at the abdominal side of the shunt tube; lumboperitoneal shunt malfunction (n = 19): obstruction of the shunt tube at the lumbar spine side (n = 10) and at the abdominal side (n = 8); under-drainage (n = 1). We examined subjects to compare the complications using Pearson chi-square tests.