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Table 4 Patients presenting with at least one potential predictor for difficult intubation

From: Endotracheal intubation using the C-MAC® video laryngoscope or the Macintosh laryngoscope: A prospective, comparative study in the ICU

  Macintosh laryngoscopy (n= 39) C-MAC® video laryngoscope (n= 43) P value
Success rate at first attempt 22 (56%) 34 (79%) 0.03
Cormack & Lehane grade 2 (1 to 3); 1 to 4 1 (1 to 2); 1 to 4 0.003
Grade I 10 26  
Grade II 14 9  
Grade III 7 4  
Grade IV 8 4  
Percentage of glottic opening 42 ± 36 76 ± 32 < 0.001
  1. Data presented as n (%), median (interquartile range); range or mean ± standard deviation.