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%)
Table 2: Spinal anesthesia related parameters of the study participants in GUH from February 25-April 10, 2013.