Neck circumference to thyromental distance ratio: a new predictor of difficult intubation in obese patients W.H. Kim, H.J. Ahn, C.J. Lee, B.S. Shin,

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Neck circumference to thyromental distance ratio: a new predictor of difficult intubation in obese patients W.H. Kim, H.J. Ahn, C.J. Lee, B.S. Shin, J.S. Ko, S.J. Choi, S.A. Ryu British Journal of Anaesthesia Volume 106, Issue 5, Pages 743-748 (May 2011) DOI: 10.1093/bja/aer024 Copyright © 2011 The Author(s) Terms and Conditions

Fig 1 ROC curve analysis of six different bedside screening tests for difficult intubation. Each receiver characteristic curve is expressed as a solid line. AUC, area under the curve; NC/TM ratio, the ratio of the neck circumference to thyromental distance; NC/SM ratio, the ratio of the neck circumference to sternomental distance. British Journal of Anaesthesia 2011 106, 743-748DOI: (10.1093/bja/aer024) Copyright © 2011 The Author(s) Terms and Conditions