Supplemental Interscalene Blockade to General Anesthesia for Shoulder Arthroscopy: Effects on Fast Track Capability, Analgesic Quality, and Lung Function
Table 4
Lung function measurements.
CINB
GA
value
FVC preop % of normal
95 (SD 15)
94 (SD 16)
n.s.
FVC % T0 h
56 (SD 18)
73 (SD 18)
<0.0001
FVC % T0.5 h
61 (SD 17)
80 (SD 16)
<0.0001
FVC % T1 h
64 (SD 18)
78 (SD 19)
<0.0001
FVC % T2 h
67 (SD 17)
85 (SD 17)
<0.0001
Patients with >25% decline in FVC at T0 h ()
63
26
0.0002
Patients with >25% decline in FVC at T0.5 h ()
71
19
<0.0001
Patients with >25% decline in FVC at T1 h ()
67
22
<0.0001
Patients with >25% decline in FVC at T2 h ()
54
11
<0.0001
FEV1 preop % of normal
93 (SD 16)
91 (SD 19)
n.s.
FEV1 % T0 h
54 (SD 18)
67 (SD 18)
<0.0001
FEV1 % T0.5 h
59 (SD 18)
76 (SD 17)
<0.0001
FEV1 % T1 h
63 (SD 19)
79 (SD 22)
<0.0001
FEV1 % T2 h
64 (SD 18)
85 (SD 17)
<0.0001
PEF preop % of normal
87 (SD 25)
82 (SD 22)
n.s.
PEF % T0 h
51 (SD 19)
59 (SD 20)
0.0184
PEF % T0.5 h
55 (SD 20)
67 (SD 20)
0.0002
PEF % T1 h
59 (SD 20)
72 (SD 27)
0.0011
PEF % T2 h
61 (SD 22)
82 (SD 26)
<0.0001
MEF25–75 preop % of normal
90 (SD 19)
86 (SD 22)
n.s.
MEF25–75 T0 h
55 (SD 33)
65 (SD 31)
0.0211
MEF25–75 T0.5 h
58 (SD 23)
74 (SD 25)
<0.0001
MEF25–75 T1 h
61 (SD 25)
79 (SD 28)
<0.0001
MEF25–75 T2 h
63 (SD 24)
85 (SD 22)
<0.0001
Data are presented as absolute values (mean ± standard deviation). Statistical analysis between groups was performed with relative changes compared to corresponding preoperative baseline values. For abbreviations, see Table 2. FVC, forced vital capacity. FEV1, 1-second expiratory volume. PEF, peak expiratory flow. MEF25–75, midexpiratory flow (25–75).
