RESUMEN
Background: Dorsal preservation rhinoplasty (DPR) has shown promise in Western populations for nasal hump reduction, but its feasibility and long-term outcomes in Asian individuals remain unexplored. Objective: To measure the feasibility, as well as the functional and aesthetic outcomes, of DPR in Asian hump noses and to determine its effectiveness in adaptation to the unique characteristics of the Asian demographic. Methods: A retrospective review analyzed patients who underwent primary DPR between April 2019 and November 2022 with a follow-up period of over 12 months. The study included patients whose photographs met the criteria. Surgical techniques, aesthetic measurements using anthropometric factors, and subjective outcomes were evaluated. Results: Of the 17 patients (11/17, 64.7% female), the mean age was 22.53 years (standard deviation [SD] 5.22 years). The median follow-up period was 36.90 months (range 13-61 months). Measurements from pre- and postoperative photographs showed a significant reduction in both nasofacial angle (7.76°, SD 4.30°) and rhinion angle (0.85°, SD 0.69°) (p < 0.0001). Patient-reported outcome scores with the Nasal Obstruction Symptom Evaluation scale decreased from 61.00 (SD 26.96) to 15.50 (SD 11.65), and Standardized Cosmesis and Health Nasal Outcomes Survey scores postoperatively were 10.90 (SD 7.71) overall, with the functional component at 3.50 (SD 2.64) and the aesthetic component at 7.40 (SD 6.24). No residual hump, recurrence of the hump, or complications were observed. Conclusion: In this study, the use of DPR techniques was effective and may support further development of the inclusion and exclusion criteria for its use in correcting the dorsal hump in Asian patients. Careful patient selection will be imperative to determine the ultimate indications for this technique.
RESUMEN
Objective: Supine sleep position and rapid eye movement (REM) stage are widely known to aggravate the severity of obstructive sleep apnea (OSA). In general, position-dependent OSA is defined as an apnea-hypopnea index (AHI) at least twice as high in the supine position as in other sleep positions, but it can be misdiagnosed if a certain sleep stage, REM or NREM, is dominant in a specific sleep position. In this study, we investigated the influences of the sleep stages on positional dependency. Methods: The polysomnographic data from 111 OSA patients aged ≥ 18 years (AHI > five events/hour) who slept in both supine and non-supine positions (each ≥ 5% of the total sleep time) were retrospectively analyzed. The overall ratio of non-supine AHI/supine AHI (NS/S AHI ratio) during the entire sleep was compared between specific sleep stages, i.e., REM or NREM sleep. Additionally, the weighted NS/S AHI ratio reflecting the proportion of each sleep time was created and compared with the original NS/S AHI ratio. Results: The mean value of the NS/S AHI ratio did not differ between the entire sleep and the specific sleep stages. However, those ratios in the individual patients showed poor agreement of the NS/S AHI ratios between the entire sleep and the specific sleep stages. The weighted NS/S AHI ratio also demonstrated poor agreement with the original NS/S AHI ratio, mainly due to the discrepancy in mild to moderate OSA patients. Conclusion: The weighted NS/S AHI ratio might help assess precise positional dependency.