Table 2.
Summary of characteristics of the 6 patients with SVAD treated conservatively.
| Patient | Sex | Age | HT | FHS | DM | Signs/symptoms | SVAD location | VA dominance | Devel of con-VA | NIHSS | mRS | Follow-up (months) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | f | 37 | − | − | − | N/H | V3(L)/DoVA(−) | + | + | 0 | 0 | 30 |
| 2 | m | 39 | + | − | − | N | V2(R) | − | + | 0 | 0 | 24 |
| 3 | f | 46 | + | − | − | N/T | V2(L) | − | + | 0 | 0 | 36 |
| 4 | f | 27 | − | − | − | P/H | V2(R) | − | + | 0 | 0 | 12 |
| 5 | f | 23 | − | − | − | N/T | V2(R) | − | + | 0 | 0 | 11 |
| 6 | m | 38 | + | + | − | P | V2(L) | − | + | 0 | 0 | 12 |
N: nystagmus; T: tinnitus; H: headache; P: neck pain; m: male; f: female; SVAD: spontaneous vertebral artery dissection; VA: vertebral artery; Devel of con-VA: development of contralateral vertebral artery distal to the orifice of PICA (posterior inferior cerebellar artery); NIHSS: National Institute of Health stroke scale; mRS: modified Rankin score; V3: the third segment of vertebral artery; V2: the second segment of vertebral artery; L: left; R: right; DoVA(−): dissection on the nondominant vertebral artery; HT: hypertension; FHS: family history of stroke; DM: diabetes mellitus.