The 3D printed airway model is able to be accurately scaled to various sizes and simulate the mechanical properties of the desired age group. The 3D printed model provides an excellent alternative to animal models in terms of practicality, logistics of use, and anatomical accuracy.
Direct laryngoscopy is the most predominantly used technique in laryngology, with the fulcrum-based laryngoscope serving as the most popular instrument. The purpose of this study was to accurately calculate and measure the pressure acting on the laryngopharynx and the tongue base during microlaryngoscopy. The relationship between postoperative throat pain and the time and pressure applied during microlaryngoscopy were also investigated. Fifty patients undergoing microlaryngeal surgery were included in this prospective study. Parameters that may help predict difficult laryngeal exposure were measured in the patients before microlaryngoscopy. Using static equilibrium and the law of the lever, the pressure acting on the laryngopharynx and the tongue base were calculated and related parameters were then tested for their influence on pressure. The time and pressure applied during microlaryngoscopy of each patient were compared with postoperative throat pain grade. The mean pressure was 292 ± 109 mmHg and was significantly influenced by BMI, neck circumference and full mouth opening, whereas no gender-based differences of any kind were found. The pressure applied during microlaryngoscopy was extremely high in patients with difficult laryngeal exposure (376 ± 62 mmHg), serving as a possible reason for the presence of throat pain or complications present following surgery. However, it was found that the duration of suspension laryngoscopy, not the pressure, had the most significant correlation with postoperative throat pain.
To evaluate the value of 3D images based on multi-detect computer tomography (MDCT) for the diagnosis and management of patients with suspected foreign bodies aspiration, and report our experience about diagnosis and management of the aforementioned patients using the 3D images, as well as detail our protocol for the management of those patients. Forty-four patients (37 children, 7 adults) with suspected foreign bodies aspiration who accepted pre-surgical examination and bronchoscopy in our hospital were included in this study. All the patients' pre-surgical 3D images based on MDCT were reconstructed and analyzed. After that all the results were compared with observations in the surgeries. Among the 37 pediatrics, 34 patients were detected with FB in their tracheobronchial system by the 3D images based on MDCT, and 3 cases were detected negative. The sensitivity of 3D images is 100 %, and the specificity is 75 %.In the adult group, all the 7 cases of FB in the tracheobronchial tree were detected by 3D images and proved by bronchoscopy. 3D images based on MDCT were proved to be a valuable method for the diagnosis of the patients with suspected FB aspiration. In the diagnosis and management of those patients, we considered that both the typical FB aspiration history and the intractable symptoms of cough should be taken as the criteria and the first step for selecting those suspected patients; then 3D images based on MDCT could be taken as the second step and as the selective criteria for those patients who should accept the rigid bronchoscopy.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.