| Clinical signs | n | % |
| Edema (affronter et upper limb) | 38 | 52.7 |
| Headaches | 21 | 29.9 |
| Convulsions | 21 | 29.2 |
| Vertigo | 14 | 19.4 |
| Palpitations | 12 | 16.7 |
| Coma | 5 | 14 |
| Signs of left ventricular fealure | 6 | 8.3 |
| Agitations | 1 | 1.4 |