Introduction: One of the most common problems during laryngoscopy involves sympathetic system stimulation and the subsequent hemodynamic changes. It is a key measure to maintain the hemodynamic stability of patients with cardiovascular diseases during induction of anesthesia. This study attempted to compare the hemodynamic effects of laryngeal mask airway and combitube. Methods: This prospec...

THE MULTIFUNCTIONAL UPPER AIRWAY, its mechanical properties, and the muscles that control its shape and size are complex (Fig. 1). As highlighted by Fregosi and Ludlow (7) in their mini-review on activation of upper airway muscles during breathing and swallowing, precise coordination of the upper airway is essential for efficient swallowing. Sleep and the supine posture place additional demands...

introduction: this study aims at examining the difference of pharyngeal airways in patients with different occlusion postures, hoping to im prove diagnostic methods and provide a stable treatment plan for orthodontic patients. materials and methods: the data were ga-thered through cbct radiographies of patients from a specialized center for radiology. in each occlusion group according to the pe...

the impulse oscillation system (ios) measures respiratory impedance (zrs) in terms of resistance (rrs) and reactance (xrs) at multiples of 5 hz. these measurements can be used clinically to help diagnose and monitor respiratory disorders, independent of effort. there is, as yet, no information on reference values for ios in iranian adolescents. the predictive equation for resistance and impedan...

introdouction: the aim of this study was to compare information regarding pharyngeal airway sizes in adolescent subjects with different malocclusion classes obtained from lateral cephalograms and 3–dimensional (3d) cone-beam computed tomography (cbct) scans. materials and methods: in this prospective cross-sectional study, cbct scans and lateral cephalograms of 35 subjects, taken within one wee...

Aim: Evaluate the impact of difficult airway traning on Korean paramedic students' performance during manikin-based airway management simulations. Methods: 40 Korean paramedic students with previous training in airway management and endotracheal intubation were randomly assigned to an intervention or control group. Students in the intervention group completed 16 additional hours of training usi...