Cartwright R D, Samelson C F
JAMA. 1982 Aug 13;248(6):705-9.
The tongue-retaining device (TRD) was designed to increase the unobstructed dimension of the nasal breathing passage during sleep. Twenty male patients with diagnoses of sleep apnea syndrome, primarily of the obstructive type, confirmed by clinical polysomnography, were fitted with the device. The TRD holds the tongue in a forward position by negative pressure. Fourteen patients have been tested before and after this treatment, and ten of these have also completed two follow-up recordings four to six months after being trained in the use of this device. There was significantly improved sleep and significantly fewer and shorter apneic events on all nights when the device was worn. On the first night of wearing the TRD for a half night only, there was a significant reduction in the number of obstructive and central apneic episodes. The mean apnea plus hypopnea index while wearing the TRD is comparable with the rate reported for patients who have been treated surgically by either tracheostomy or by uvulopalatopharyngoplasty, although the tracheostomy group contained more severe cases.
舌保持装置（TRD）旨在增加睡眠期间鼻腔呼吸通道的通畅尺寸。通过临床多导睡眠图确诊为睡眠呼吸暂停综合征（主要为阻塞型）的20名男性患者佩戴了该装置。TRD通过负压将舌头保持在向前位置。14名患者在该治疗前后进行了测试，其中10名患者在接受该装置使用培训四至六个月后还完成了两次随访记录。佩戴该装置的所有夜晚，睡眠均有显著改善，呼吸暂停事件显著减少且持续时间缩短。仅在佩戴TRD半晚的第一晚，阻塞性和中枢性呼吸暂停发作次数就显著减少。佩戴TRD时的平均呼吸暂停加低通气指数与接受气管切开术或悬雍垂腭咽成形术手术治疗的患者报告的比率相当，尽管气管切开术组包含更多重症病例。
