Table 3 Results of the spirometry outcomes at baseline (T0) and 30 min after the interscalene block (T30) comparing the anterior and the posterior puncture approaches
Spirometry variable | Puncture approach | T0 | T30 | ||||
|---|---|---|---|---|---|---|---|
Median (Q1, Q3) | Median differenceanterior-posterior (95 % CI) | p-value (two-sided) | Median (Q1, Q3) | Median differenceanterior-posterior (95 % CI) | p-value (two-sided) | ||
VC [l] | anterior | 5.09 (3.98, 5.58) | 0.38 (−0.15, 0.88) | 0.167 | 3.98 (3.31, 4.67) | 0.40 (−0.08, 0.88) | 0.088 |
posterior | 4.46 (3.90, 5.37) | 3.46 (2.90, 4.34) | |||||
FEV1 [l/s] | anterior | 3.80 (3.34, 4.33) | 0.25 (−0.16, 0.63) | 0.174 | 3.05 (2.41, 3.44) | 0.34 (−0.09, 0.72) | 0.103 |
posterior | 3.57 (3.01, 4.11) | 2.58 (2.05, 3.22) | |||||
Sniff PmaxPeak [kPa] | anterior | 6.24 (4.84, 7.67) | −0.24 (−1.24, 0.83) | 0.655 | 5.13 (4.21, 7.22) | −0.23 (−1.04, 0.56) | 0.582 |
posterior | 6.25 (5.09, 8.63) | 5.70 (4.54, 6.83) |