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Values of the head extension and laryngoscope blade levering motion angles during conventional and balloon laryngoscopy |
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| Conventional Macintosh blade |
Modified Macintosh blade |
P |
|
|
|
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| Angle of head extension |
8.29 ± 1.57 |
4.91 ± 1.42 |
< 0.001 |
| Angle of laryngoscope blade levering motion |
10.76 ± 1.75 |
5.53 ± 2.13 |
< 0.001 |
|
Values are expressed as mean ± standard deviation in degrees. P values were obtained by using the paired t-test. | |||
Mentzelopoulos et al. Critical Care 2000 4:40 doi:10.1186/cc648 |
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