Search Results (5)

One of the most common reasons a patient would see an otolaryngologist is for nasal obstruction. This article provides an overview of the physical principles related to nasal airflow as well as the critical role that the internal nasal valve plays in regulating airflow resistance. Common treatment options for internal nasal valve obstruction are discussed as well as an in-depth tutorial on an alternate lateral nasal suspension suture technique for internal nasal valve collapse. Full article

Previous reports showed that prolonged operative time increases the risk of surgical site infection rates, prolonged hospital stays, and potentially higher rates of revision surgeries. In the context of rhinoplasty, the type of nasal deformity may complicate the surgical procedure and increase the operative time. We aimed to investigate the association between the type of nasal deformity and operative time in rhinoplasty patients. This retrospective chart review studies 349 patients who underwent primary and secondary rhinoplasty procedures due to various nasal deformities in King Saud University-Medical City. The primary outcome of the present study was the association between operative time, defined as the time from the initial incision to the completion of skin closure, and the type of nasal deformity. The association between the type of deformity and operative time was assessed using one-way ANOVA and Bonferroni post hoc analysis. There was a statistically significant association between the type of nasal deformity and operative time (p < 0.001). Patients with dorsal, alar base, and tip deformities had significantly longer operative times than patients with isolated dorsal deformities (208.01 ± 57.73 min) (p < 0.001). The analysis also showed that the presence of crooked nose deformities (p < 0.001), an inverted V deformity (p = 0.01), internal nasal valve collapse (p = 0.025), axis deviation (p = 0.003), over-projection, and under-projection significantly increased surgical duration. The complexity of nasal deformities significantly impacts the operative time in rhinoplasty surgeries; more complex deformities that require extensive surgical procedures are associated with a longer operative time. Further research is warranted to corroborate these findings and investigate other potential influencing factors. Full article

Nose-to-brain delivery is a promising way to improve the treatment of central nervous system disorders, as it allows the bypassing of the blood–brain barrier. However, it is still largely unknown how the anatomy of the nose can influence the treatment outcome. In this work, we used 3D printing to produce nasal replicas based on 11 different CT scans presenting various anatomical features. Then, for each anatomy and using the Design of Experiments methodology, we characterised the amount of a powder deposited in the olfactory region of the replica as a function of multiple parameters (choice of the nostril, device, orientation angle, and the presence or not of a concomitant inspiration flow). We found that, for each anatomy, the maximum amount of powder that can be deposited in the olfactory region is directly proportional to the total area of this region. More precisely, the results show that, whatever the instillation strategy, if the total area of the olfactory region is below 1500 mm², no more than 25% of an instilled powder can reach this region. On the other hand, if the total area of the olfactory region is above 3000 mm², the deposition efficiency reaches 50% with the optimal choice of parameters, whatever the other anatomical characteristics of the nasal cavity. Finally, if the relative difference between the areas of the two sides of the internal nasal valve is larger than 20%, it becomes important to carefully choose the side of instillation. This work, by predicting the amount of powder reaching the olfactory region, provides a tool to evaluate the adequacy of nose-to-brain treatment for a given patient. While the conclusions should be confirmed via in vivo studies, it is a first step towards personalised treatment of neurological pathologies. Full article

High dorsal deviation of the septum can cause nasal obstruction due to internal nasal valve (INV) stenosis. We have developed a new technique using a modified mattress suture on the bony-cartilaginous junction to correct high dorsal septal deviation. This study focused on the effect of this suturing technique on the modification of the INV. We enrolled 40 patients who underwent septoplasty using a modified mattress suture technique. We retrospectively analyzed the data of the preoperative and postoperative INV angles and cross-sectional areas (CSAs), which were measured using computed tomography. In addition, we compared the patients’ subjective nasal symptoms, which were measured with the preoperative and postoperative Nasal Obstruction Symptom Evaluation (NOSE) instrument. Postoperative increases in the narrow side INV angle and CSA were achieved. Additionally, the wide side INV angle and CSA were significantly decreased postoperatively. The INV and CSA ratio (wide/narrow) were also decreased postoperatively and were brought closer to 1. The subjective nasal symptoms also exhibited significantly reduced NOSE values. In this study, we confirmed the effects of septoplasty using a modified mattress suture technique for INV modification through the comparison of the preoperative and postoperative INV angles and CSAs. Full article

Developing cartilage constructs with injectability, appropriate matrix composition, and persistent cartilaginous phenotype remains an enduring challenge in cartilage repair. Fourteen patients with minor contour deformity were treated with fluid cartilage filler gently injected as autologous fluid graft in deep planes of defect of the nose that were close to the bone or the cartilage. A computerized tomographic scan control was performed after 12 months. Pearson’s Chi-square test was used to investigate differences in cartilage density between native and newly formed cartilages. The endpoints were the possibility of using fluid cartilage as filler with aesthetic and functional improvement and versatility. Patients were followed up for two years. The constructs of fluid cartilage graft that were injected in the deep plane resulted in a persistent cartilage tissue with appropriate morphology, adequate central nutritional perfusion without central necrosis or ossification, and further augmented nasal dorsum without obvious contraction and deformation. This report demonstrated that fluid cartilage grafts are useful for cartilage regeneration in patients with outcomes of rhinoplasty, internal nasal valve collapse, and minor congenital nose aesthetics deformity. Full article