Paramedics can use “LEMON” to predict a difficult airway and intubation. Use the "LEMON" method, not a real LEMON! The authors of a study from Scotland developed an airway assessment score based on this method and determined the score's utility in predicting difficult airways.
L = Look externally (facial trauma, large incisors, beard or moustache, and large tongue).
E = Evaluate the 3-3-2 rule (using fingers, see below)
M = Mallampati Class 1 to 4 (see below).
O = Obstruction (presence of any condition that could cause an obstructed airway).
N = Neck mobility (limited neck mobility).
Disclaimer: The information in this document has been taken from various sources and includes knowledge from registered paramedics, it does not replace formal training. The skills mentioned in this article may be taught and assessed differently as they are described here and should not be used in practice unless correct methods have been taught, assessed and the clinician or student is working within their scope of practice. The details in this article could be subject to change at any time without prior notice. Any feedback is always welcome Contact Us