The findings of the present study reveal that APACHE II scores do not have any role as an indicator in determining the risk of unplanned extubation. Epstein et al17 and Chang et al14 reported that they did not find any statistically significant difference in terms of APACHE II scores between the self-extubated group and the control group in their study. Moons et al3 measured the acute physiological state of the patients in the research through SAPS (Simplified Acute Physiology Score) and could not find any significant difference in terms of this variable between the self-extubated group and the control group. The study results reveal that acute physiological and chronic health states of the individuals who are intubated in ICUs are not risk factors for unplanned extubation. The present study found a statistically significantdifference in terms of GCS scores between the unplanned extubation group and the control group. However, because average scores of both groups were between 8 and 12 (scores between 8 and 12 indicate precoma state in evaluation of GCS), it would be noteworthy to investigate these results in further studies. Moons et al3 found the average GCS score of the control group as 4 and of the self-extubated group as 7. They suggested that high scores indicate risk of self-extubation. Chang et al14 stated that GCS scores of the patients in the unplanned extubation group were higher than those in the control group. Moreover, Jarachovic et al16 specified that there was no statistically significant difference in terms of GCS scores between the unplanned extubation group and the control groups. Accordingly, it could be suggested that the literature related to the impact of the individual’s coma state on unplanned extubation in ICUs results in conflicting results and that further studies should be undertaken.