Quality os spinal block

BMI

Good block (%)

Insufficient block (%)

Spinal anaesthesia failure (%)

p = 0.575

Thinness

36 (97.29)

1 (2.71)

0 (0)

37 (100)

Normal

1014 (97.4)

11 (0.1)

16 (1.5)

1041 (100)

Overweight

604 (98.21)

6 (0.97)

5 (0.81)

615 (100)

Obesity

253 (96.93)

5 (1.91)

3 (1.14)

261 (100)

Arterial hypotension

p = 0.001

Uterine height

No (%)

Yes (%)

<30 cm

121 (85.81)

20 (14.18)

141 (100)

30 - 34 cm

860 (80.14)

213 (19.85)

1073 (100)

>34 cm

304 (73.07)

112 (26.92)

416 (100)