Accuracy of airway ultrasound parameters to predict difficult airway using the LEMON criteria as a reference: A cross-sectional diagnostic accuracy study.

Objectives: Ultrasound (US) airway indexes were frequently compared with other scoring systems such as Mallampati score and Cormack - Lehane classification system, but to the best of our knowledge never with LEMON. Here, in this study, we evaluated the accuracy of some recommended airway US parameters in terms of screening difficult airway using the LEMON criteria as a reference.

Methods: This was a cross-sectional diagnostic accuracy study in which people with at least 18 years old coming to the emergency departments for any reason who had consent for participation, were enrolled with the simple random sampling method.

Value of Canadian C-spine rule versus the NEXUS criteria in ruling out clinically important cervical spine injuries: derivation of modified Canadian C-spine rule.

Purpose: Although, Canadian C-spine rule and the National Emergency X-Radiography Utilization Study (NEXUS) criteria in ruling out clinically important cervical spine injuries have been validated using large prospective studies, no consensus exist as to which rule should be endorsed. Therefore, the aim of the present study was to compare the accuracy of the Canadian C-spine and NEXUS criteria in ruling out clinically important cervical spine injuries in trauma patients. Finally, we introduced the modified Canadian C-spine rule.

Three-component Synthesis of Novel Highly Functionalized 2,6-dihydropyrimido[2,1-a]isoindole Derivatives.

Three-component reaction of dialkyl acetylenedicarboxylates, isocyanides and 1,3- diimino isoindoline affords highly functionalized 2,6-dihydropyrimido[2,1-a]isoindole derivatives in good yields under catalyst free and mild reaction conditions.