Investigations and management (annualised data).
| Investigation | 1995–6 | 2008–9 | 2014 |
|---|---|---|---|
| CT | 104 | 74 | 64 |
| MRI | 39 | 122 | 182 |
| EEG | 29 | 18 | 12 |
| VEP | 16 | 1 | 4 |
| EMG/NCS | 9 | 15 | 56 |
| CSF | 25 | 12 | 26 |
| MRA | 8 | 9 | 12 |
| Carotid doppler | 6 | 4 | 12 |
| Angiogram | 2 | 0 | 0 |
| Blood tests | 85 | 60 | 126 |
| No investigations | 69 | 105 | 78 |
| Action taken | |||
| Admit within one week | 45 | 15 | 8 |
| Admit as routine | 12 | 3 | 2 |
| Follow up | 138 | 104 | 138 |
| Treatment and discharge | 23 | 29 | 82 |
| Discharge no treatment | 69 | 33 | 164 |
| Refer to specialty | 29 | 20 | 62 |
CSF = cerebrospinal fluid; CT = computerised tomography; EEG = electroencephalography; EMG = electromyography; MRA = magnetic resonance angiography; MRI = magnetic resonance imaging; NCS = nerve conduction study; VEP = visual evoked potential.