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. 2020 Dec 21;278(9):3479–3488. doi: 10.1007/s00405-020-06541-3

Fig. 3.

Fig. 3

Nomogram to predict the need for tracheostomy. Age, TBSA score and inhalation injury were significant factors in our model (a). Due to the strong interaction effect of age and TBSA, the nomogram provides the scores for TBSA values stratified by age. Depending on the patients’ age, different TBSA scales need to be used. The TBSA (age = 20) scale can be used for patients aged 15–24 years, while TBSA (age = 30) can be used for patients aged 25 and 34 years, etc. As exemplified, a 44-year old patient with a TBSA of 60% and presence of inhalation injury has a 90% risk of tracheostomy (b)