Table 3 Mean spread of the sensory block of the operative side at timed intervals following local anaesthetic injection in groups
Moderately high altitude group | Sea level group | |
|---|---|---|
(n = 70) | (n = 70) | |
15th min | T10 (T4-T12)* | T8 (T4-T12) |
30th min | T10 (T4-T12)* | T8 (T5-T12) |
45th min | T11 (T4-T12)* | T9 (T6-T12) |
60th min | T12 (T6-L4)* | T11 (T6-L2) |
75th min | L1 (T7-S2)* | T12 (T6-L3) |
90th min | L2 (T7-S4)* | T12 (T6-L5) |
120th min | L4 (T10-S4)* | L2 (T7-S2) |
150th min | S1 (T10-S4)** | L5 (T2-S4) |