| |
Double-lumen tube (n=20) |
Bronchial blocker (n=19) |
p-value |
| Mean arterial blood pressure (mmHg) |
|
|
|
| Before induction of anaesthesia |
96 ± 23 |
92 ± 12 |
0.588 |
| Prior to start of laryngoscopy |
86 ± 18 |
79 ± 12 |
0.230 |
| After passing vocal cords |
98 ± 27 |
92 ± 18 |
0.431 |
| Inflating bronchial cuffs |
113 ± 25 |
87 ± 12 |
0.008 |
| Highest value |
121 ± 17 |
105 ± 18 |
0.022 |
| Average maximum change |
28 ± 21 |
20 ± 16 |
0.376 |
| Heart rate (beats/min) |
|
|
|
| Before induction of anaesthesia |
68 ± 9 |
72 ± 11 |
0.220 |
| Prior to start of laryngoscopy |
70 ± 13 |
71 ± 12 |
0.765 |
| After passing vocal cords |
73 ± 12 |
81 ± 18 |
0.172 |
| Inflating bronchial cuffs |
85 ± 13 |
83 ± 14 |
0.695 |
| Highest value |
86 ± 11 |
87 ± 16 |
0.757 |
| Average maximum change |
19 ± 12 |
15 ± 11 |
0.381 |
| Norepinephrine (ng/l) |
|
|
|
| Before laryngoscopy |
224 ± 144 |
207 ± 101 |
0.669 |
| One minute after intubation |
223 ± 135 |
234 ± 120 |
0.633 |
| Epinephrine (ng/l) |
|
|
|
| Before laryngoscopy |
60 ± 52 |
43 ± 20 |
0.227 |
| One minute after intubation |
28 ± 25 |
30 ± 40 |
0.876 |
| Cortisol (μg/dl) |
|
|
|
| Before laryngoscopy |
13 ± 7 |
13 ± 8 |
0.998 |
| One minute after intubation |
12 ± 7 |
12 ± 8 |
0.946 |
Values are means ± SDs.