| Variable |
Frequency: n (%) |
| Previous SA |
Yes |
10 (8.6%) |
| No |
106 (91.4%) |
| Previous history of PDPH |
Yes |
3 (2.6%) |
| No |
113 (97.4%) |
| Position |
Sitting |
115 (99.1%) |
| Lateral |
1 (0.9%) |
| Number of attempts |
Single attempt |
64 (55.2%) |
| Twice attempt |
36 (31%) |
| >2 attempts |
16 (13.8%) |
| Size of SA needle |
18 Gauge |
11 (9.5%) |
| 20 Gauge |
49 (42.5%) |
| 22 Gauge |
29 (25%) |
| 24 Gauge |
15 (12.9%) |
| 25 Gauge |
1 (0.9%) |
| 26 Gauge |
5 (4.3%) |
| |
27 Gauge |
6 (5.2%) |
| A successful block |
Yes |
111 (95.7%) |
| No |
5 (4.3%) |
| Associated symptoms |
Neck stiffness |
34 (29.3%) |
| Tinnitus |
2 (1.7%) |
| Photophobia |
1 (0.9%) |
| Nausea |
10 (8.6%) |
| None |
69 (59.5%) |
|
