From: Risk factors for epidural anesthesia blockade failure in cesarean section: a retrospective study
Variable | Univariate analysis | Multivariable analysis | |||
---|---|---|---|---|---|
Crude OR (95% CI) | P value | Adjusted OR (95% CI) | P value | ||
Age, years | 0.94 (0.89–0.98) | 0.004 | 0.91 (0.86–0.95) | < 0.001 | |
Body mass index, kg/m2 | 0.96 (0.91–1.01) | 0.092 | 0.96 (0.90–1.01) | 0.112 | |
Previous epidural analgesia | 2.62 (1.66–4.13) | < 0.001 | 2.61 (1.38–4.94) | 0.003 | |
Puncture site | |||||
L2-3 | 1.00 | ||||
L3-4 | 0.71 (0.38–1.33) | 0.287 | |||
L4-5 | 1.27 (0.43–3.79) | 0.667 | |||
Loss of resistance methods (Saline vs. Air) | 1.05 (0.56–1.96) | 0.885 | |||
Catheter depth, cm | 1.16 (0.82–1.64) | 0.392 | |||
Experience of anesthesia provider (Obstetric anesthesiologist vs. Resident) | 1.11 (0.62–1.99) | 0.725 | |||
Emergency surgery | 0.71 (0.45–1.14) | 0.153 | 0.83 (0.50–1.35) | 0.446 | |
Rupture of membrane | 0.76 (0.39–1.51) | 0.440 | |||
Parity (Parous vs. Nulliparous) | 2.14 (1.31–3.49) | 0.002 | 1.44 (0.73–2.84) | 0.289 | |
Waiting time | 0.92 (0.87–0.97) | 0.002 | 0.91 (0.87–0.97) | 0.002 |