Double-lumen tube (n=20) Bronchial blocker (n=19) P Value
Sex (m/f) 12; 8 8; 11  
Age (yr) 62 ± 14 54 ± 20 P=0.109
Weight (kg) 79 ± 19 74 ± 13 P=0.407
Height (cm) 173 ± 11 170 ± 9 P=0.409
ASA physical status (number)      
1 5 2  
2 9 10  
3 6 7  
Mallampati score      
1 2 4  
2 13 12  
3 5 3  
Cormack and Lehane      
1 13 14  
2 7 5  
Indications      
Lung biopsy 2 1  
Lobectomy 8 5  
Segmentectomy 6 7  
Pleural decortication 4 6  
Midazolam (total in mg) 3.2 ± 0.8 3.0 ± 0.5 P=0.422
Fentanyl (total in mg) 0.2 ± 0.4 0.2 ± 0.3 P=0.603
Rocuronium (total in mg) 47.6 ± 11.7 44.5 ± 8.1 P=0.439
Propofol (total in mg) 119 ± 29.2 111 ± 20.3 P=0.415
Values are means ± SDs or number of patients.
Figure 1: Difference between the mean induction doses of Propofol. Bar A is for Group K, Bar B is for Group M.