|   | 
        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. |