Buschle Mauricio, Hamerschmidt Rogerio, Matias Jorge Eduardo Fouto, Zanini Otavio Pereira Lima, Coelho Luiz Otavio de Mattos, Polanski Jose Fernando
Universidade Federal do Paraná, Curitiba, PR, Brazil.
Hospital Iguaçu, Curitiba, PR, Brazil.
Int Arch Otorhinolaryngol. 2024 Jun 7;28(3):e387-e393. doi: 10.1055/s-0044-1786827. eCollection 2024 Jul.
One of the paths in the investigation of congenital sensorineural hearing loss (CSNHL) is to try to characterize its etiology through the inner ear evaluation using high resolution computer tomography (CT) scans. With minor malformation, it is not always possible for a simple visual inspection to recognize if the structure in the inner ear is normal or not. To verify if measurements of the inner ear are predictive of sensorineural hearing loss (SNHL) and suggest cutoff points of size limits. Retrospective cross-sectional study of inner ear CT scan measurements of 214 patients, 50 with congenital SNHL (CSNHL) and 164 acquired SNHL (ASNHL) (control group). In the CSNHL group, central bony island (CBI) were 0.48 mm smaller ( < 0.001), cochlear nerve aperture was (CNA) 0.10 mm smaller ( < 0.001), and cochlea height was (CH) 0.15 mm smaller ( < 0.001). Vestibular aqueduct (VA) and cochlea width (CW) were similar between groups (0.70 vs 0.72, = 0.19, and 7.20 vs 7.15 = 0.23). The predictive cutoff points for CSNHL were CBI = 3.6 mm, CAN = 1.4 mm, CH = 3.4 mm, CW = 7.0 mm, and VA = 0.9 mm. Congenital sensorineural hearing loss determined a decrease in CBI, opening of the cochlear nerve (OCN), and CW. Thus, these measures, at the cutoff points indicated, should make us aware of the diagnosis of congenital hearing loss.
先天性感音神经性听力损失（CSNHL）研究的其中一条途径是通过使用高分辨率计算机断层扫描（CT）对内耳进行评估，试图确定其病因。对于轻微畸形，仅通过简单的目视检查并不总是能够识别内耳结构是否正常。 为了验证内耳测量值是否可预测感音神经性听力损失（SNHL）并提出尺寸限制的临界点。 对214例患者的内耳CT扫描测量进行回顾性横断面研究，其中50例为先天性SNHL（CSNHL）患者，164例为获得性SNHL（ASNHL）患者（对照组）。 在CSNHL组中，中央骨岛（CBI）小0.48毫米（<0.001），蜗神经孔（CNA）小0.10毫米（<0.001），耳蜗高度（CH）小0.15毫米（<0.001）。两组之间的前庭导水管（VA）和耳蜗宽度（CW）相似（0.70对0.72，=0.19，以及7.20对7.15 =0.23）。CSNHL的预测临界点为CBI =3.6毫米，CAN =1.4毫米，CH =3.4毫米，CW =7.0毫米，VA =0.9毫米。 先天性感音神经性听力损失导致CBI、蜗神经开口（OCN）和CW减小。因此，在所示的临界点处，这些测量值应使我们意识到先天性听力损失的诊断。
