Viswanathan Narayanan, Vidler Michael, Richard Bruce
Breoomfield Hospital, St. Andrews Centre for Burns and Plastic Surgery, Chelmsford, UK.
Cleft Palate Craniofac J. 2008 Mar;45(2):187-92. doi: 10.1597/06-078.1.
To objectively estimate the extent of hearing loss in infants with cleft palate and to measure the incidence of hearing loss.
Retrospective consecutive case note review.
Tertiary institutional regional referral center for cleft lip and palate.
PATIENTS, PARTICIPANTS: Consecutive cases of 90 infants with cleft palate who underwent auditory brain stem response (ABR) threshold estimation.
ABR threshold estimation during natural sleep in infants with cleft palate under 2 months of age.
Hearing level thresholds as estimated by auditory brain stem response and categorized as normal (< 25 < or = 35 dB nHL) , mild (> 35 < or = 45 dB nHL), moderate (> 45 < or = 65 dB nHL), severe (> 65 < or = 90 dB nHL), and profound (> 90 dB nHL) hearing loss.
Hearing loss was present in 82% of the infants tested. Most of the hearing loss was conductive (89%), mild (86%), and bilateral (84%). Average age of ABR threshold estimation was 48.5 days. In 22% of infants there was an associated syndrome. The mean air conduction thresholds for the right and left ear were 40 and 39.7, respectively.
The incidence of hearing loss in a cohort of cleft palate infants has been objectively estimated by auditory brain stem response thresholds and was found to be very high (82%).
客观评估腭裂婴儿的听力损失程度，并测量听力损失的发生率。
回顾性连续病例记录审查。
三级机构性唇腭裂区域转诊中心。
患者、参与者：90例接受听性脑干反应（ABR）阈值评估的腭裂婴儿连续病例。
对2个月以下腭裂婴儿在自然睡眠状态下进行ABR阈值评估。
通过听性脑干反应估计的听力水平阈值，分为正常（<25<或=35 dB nHL）、轻度（>35<或=45 dB nHL）、中度（>45<或=65 dB nHL）、重度（>65<或=90 dB nHL）和极重度（>90 dB nHL）听力损失。
在接受测试的婴儿中，82%存在听力损失。大多数听力损失为传导性（89%）、轻度（86%）和双侧（84%）。ABR阈值评估的平均年龄为48.5天。22%的婴儿伴有综合征。右耳和左耳的平均气导阈值分别为40和39.7。
通过听性脑干反应阈值客观评估了一组腭裂婴儿的听力损失发生率，发现其非常高（82%）。
