• Betul Basaran, Ayse Ilksen Egilmez, Necat Alatas, Aysun Ankay Yilbas, and Mehmet Sargin.
• Department of Anesthesiology, Konya Training and Research Hospital, Meram Yeni Yol Street, 42090, Konya, Turkey. betulbasaran1@yahoo.com.
• J Anesth. 2018 Oct 1; 32 (5): 768-773.

AbstractAccurate identification of the cricothyroid membrane (CTM) has paramount importance in the event of a 'cannot intubate, cannot oxygenate' scenario. We sought to determine the ability of anesthesiologists to correctly identify the CTM in obese and non-obese children. Anesthesiologists were asked to mark the entry point of the cricothyroidotomy device with an ultraviolet invisible pen on obese and non-obese (BMI < 95th percentile for age and sex) children aged 7-12 years. A correct estimation was defined as a mark made between the upper and lower borders of the CTM and within the 3-mm midline. Twenty anesthesiologists palpated 30 obese and 50 non-obese children. The CTM was accurately identified with digital palpation in a total 55% of children, and there were no differences inaccurate identification rates of the CTM between obese and non-obese children [57 vs. 54%, respectively; median difference 3%; 95% confidence interval (- 20 to 25%); p = 0.82]. Accuracy was not correlated with any demographic or morphometric features of the children. Percutaneous identification of the CTM in children aged 7-12 years was poor and not significantly different for obese and non-obese children. Pre-procedural ultrasonography may help to identify the landmarks for cricothyroidotomy.

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