共查询到20条相似文献,搜索用时 468 毫秒
1.
脑干听觉诱发电位对脑外伤后持续植物状态评价的意义 总被引:2,自引:0,他引:2
目的:通过脑干听觉诱发电位(brainstem auditory evoked potential, BAEP)评估颅脑外伤后持续植物状态(persistent vegetative state, PVS)患者的脑干功能。方法:对25例(50耳)PVS患者行BAEP检测,并与对照组行单因素方差分析。结果:PVS患者的BAEP异常率为80%。其改变复杂多样,主要表现为Ⅰ V各波的异常或分化不良,甚至波形缺如;Ⅰ、Ⅲ、Ⅴ波潜伏期(peak latency, PL)延长,I V波间潜伏期(Interpeak latency, IPL)延长,双侧V波潜伏期的耳间差(inter aural latency difference, ILD)增大;Ⅲ V与Ⅰ Ⅲ波IPL之比大于1。结论:PVS患者的BAEP结果呈多样性改变,反映了患者植物状态下存在不同程度的脑干损害,为其诊疗及预后判断提供了可靠的依据。 相似文献
2.
目的探讨气、骨导ABR测试在儿童分泌性中耳炎诊疗中的应用价值。方法回顾性分析151例(246耳)分泌性中耳炎(OME组)和60例(120耳)正常儿童(正常对照组)气、骨导ABR检测结果。结果①OME组气导ABR波V反应阈正常59耳(23.98%),轻度异常96耳(39.02%),中度异常91耳(36.99%);ABR波Ⅰ、Ⅲ、Ⅴ潜伏期正常22耳(8.94%),各波潜伏期延长224耳(91.06%),Ⅰ-Ⅴ波间期无明显改变156耳(63.41%),Ⅰ-Ⅴ波间期缩短90耳(36.59%);波Ⅴ反应阈正常和轻度异常组Ⅰ-Ⅴ波间期无明显改变,中度异常组Ⅰ-Ⅴ波间期缩短,差异有统计学意义(P<0.05)。②OME组骨导ABR波V反应阈及35dB nHL刺激强度下各波潜伏期与对照组比较,反应阈正常195耳(79.27%),异常51耳(20.73%),反应阈异常者波Ⅰ、Ⅲ、Ⅴ潜伏期也较正常组及反应阈正常者明显延长(P<0.05)。结论大多数分泌性中耳炎儿童的气导ABR反应阈轻、中度异常但骨导ABR反应阈正常,少数患儿气导ABR反应阈中度异常且骨导ABR反应阈轻度异常。 相似文献
3.
目的 观察正常青年女性月经周期听性脑干反应各参数变化情况。方法 采用日本三荣7S11-A型信号处理机,对20名正常女性月经前期、行经期、月经中期与对照组之间听性脑干反应波Ⅰ、Ⅲ、Ⅴ潜伏期及Ⅰ—Ⅴ波间期进行分析。结果 女性月经前期、行经期、月经中期与男性对照组之间听性脑干反应波Ⅰ、Ⅲ、Ⅴ潜伏期及Ⅰ—Ⅴ波间期差异均有统计学意义,女性ABR波Ⅰ、Ⅲ、Ⅴ潜伏期在月经前期比行经期和中期分别缩短。结论 女性月经周期内分泌的变化可以导致ABRⅢ、Ⅴ波潜伏期及Ⅰ—Ⅴ波间期的变化。 相似文献
4.
正常青年人气骨导听性脑干反应的比较研究 总被引:1,自引:0,他引:1
目的 比较气、骨导听性脑干反应(ABR)测试结果的差异,为骨导听性脑干反应的临床应用提供参考依据。方法 利用Nicolet spirit诱发电位仪,TDH-39P和Radioear B-71换能器,对一组听力正常青年人(男31耳,女30耳)进行短声气,骨导测试。结果 在阈值及阈上强度下,骨导ABR波形与气导类似,但各波引出率较气导低。听力正常青年男女之骨导短声ABR阈值间无差异(P>0.05);阈上60dB三声刺激下Ⅰ、Ⅲ、Ⅴ波潜伏期及Ⅰ-Ⅴ波间期亦无差异(P>0.05)。骨导短声ABR与气导短声ABR比较显示:前者阈值高于后者(P<0.01),两者间呈显著的正相关(r=0.7740);短声阈上60dB强度刺激下,前者Ⅰ、Ⅲ、Ⅴ波潜伏期均大于后者(P<0.01),但两者Ⅰ-Ⅲ,Ⅲ-Ⅴ,Ⅰ-Ⅴ波间期无差异(P>0.05)。结论 骨导听性脑干反应测试的应用具有一定的局限性,但对部份不适于气导ABR检测的患者,仍有其临床使用价值。 相似文献
5.
目的探讨中耳功能异常婴儿的听性脑干反应(ABR)特点及临床应用价值。方法分析比较85例(170耳)中耳功能异常、ABR反应阈≤60dB nHL的婴儿(A组)和83例(166耳)中耳功能正常、ABR反应阈40~60dB HL的婴儿(B组)以及41例(82耳)正常婴儿(C组)的ABR波Ⅰ、Ⅲ、Ⅴ潜伏期、波间期和波Ⅴ反应阈值。结果 A组中24耳(14.11%)为ABR反应阈≤30dB nHL、73耳(42.94%)为40dB nHL、54耳(31.76%)为50dBnHL、19耳(11.18%)为60dB nHL;B组中83耳(50%)ABR反应阈为40dB nHL、52耳(31.33%)为50dB nHL、31耳(18.67%)为60dB nHL;C组婴儿ABR反应阈均≤30dB nHL。刺激声为80dB nHL时三组间波Ⅰ、Ⅲ、Ⅴ潜伏期的关系分别为:A组波Ⅰ、Ⅲ、Ⅴ潜伏期明显长于B组和C组(P<0.01),而Ⅰ-Ⅲ、Ⅰ-Ⅴ波间期则较B组和C组短(P<0.01),Ⅲ-Ⅴ波间期则与B组和C组差异无统计学意义(P>0.05);B组各波潜伏期、波间期与C组比较差异均无统计学意义(P>0.05)。三组中反应阈相同者波潜伏期比较:A组波Ⅰ、Ⅲ、Ⅴ潜伏期仍明显长于B组和C组(P<0.05)。结论婴儿中耳功能异常时大部分ABR反应阈升高,以轻中度异常为主,均有波Ⅰ潜伏期延长;波Ⅰ潜伏期明显延长对判断婴儿中耳功能异常有意义。 相似文献
6.
经鼻持续正压通气对OSAHS患者ABR的影响 总被引:1,自引:0,他引:1
目的 研究经鼻持续正压通气(continuouspositiveairwaypressurethroughthenares,nCPAP)治疗前后阻塞性睡眠呼吸暂停低通气综合征(obstructivesleepapnea/hypopneasyndrom ,OSAHS)患者听性脑干反应(ABR)各波潜伏期及波间期的变化,探讨OSAHS患者脑干电生理变化的解剖学及病理生理学基础。方法 对4 5例( 90耳)OSAHS患者及16例( 32耳)正常对照者行ABR测试及多导睡眠监测(polysomnography ,PSG) ,对其中34例( 6 8耳)OSAHS患者行nCPAP治疗前后ABR测试对比。结果 OSAHS患者的波Ⅲ、Ⅴ潜伏期及Ⅰ-Ⅲ、Ⅲ-Ⅴ、Ⅰ-Ⅴ波间期比正常对照组明显延长(P <0 .0 5 )。nCPAP治疗后波Ⅲ潜伏期较治疗前缩短,Ⅰ-Ⅲ波间期较治疗前缩短,Ⅲ-Ⅴ波间期较治疗前延长;nCPAP治疗后OSAHS患者呼吸紊乱指数及减血氧次数较治疗前明显下降(P <0 .0 5 )。结论 OS AHS患者的脑干听觉传导通路受损,与其高碳酸-低氧血症有密切关系。nCPAP治疗可以改善脑干听觉传导功能。 相似文献
7.
目的探讨听神经瘤病人听觉脑干诱发电位(ABR)波形改变的意义。方法对手术证实为听神经瘤的23例病人ABR的潜伏期、波形进行回顾性分析。结果在23例病人中,11例潜伏期延长,Ⅰ~Ⅴ波间期耳间差(IPL)大于0.4 ms;2例潜伏期延长,但Ⅰ~Ⅴ波间期耳间差小于0.4 ms;2例V波缺失;8例无波形反应。全部患侧波形均异常、重复性差,2例出现对侧波形异常。结论ABR波形变化在听神经瘤诊断中有重大意义;波形异常、重复性差可作为判断ABR异常的辅助指标。 相似文献
8.
主观性耳鸣患者听性脑干反应测试 总被引:2,自引:0,他引:2
对60例听力正常的主观性耳鸣患者进行听性脑干反应测试,结果表现为波I潜伏明显延长,波Ⅲ,Ⅴ潜伏期的相应延长及部分消失。Ⅰ-Ⅲ波间期较对照组缩短,Ⅲ-Ⅴ,Ⅰ-Ⅴ波间期与对照组相比较无显著性差异,提示耳鸣主要为耳呐为体,本组病例未见影响脑干通道 相似文献
9.
孤独症儿童脑干听觉诱发电位及耳声发射研究 总被引:1,自引:0,他引:1
目的探讨孤独症对听觉系统功能的影响,为临床诊治提供理论依据。方法对20例孤独症患儿进行听觉脑干诱发电位(auditory brainstem response,ABR)及畸变产物耳声发射(distortion Product otoacoustic emission,DPOAE)测试,设立同年龄段正常组进行对照研究。结果①孤独症组ABR双耳Ⅴ波潜伏期、右耳Ⅰ~Ⅴ波间期、Ⅲ~Ⅴ波间期延长,与对照组比较有显著性差异(P〈0.05);②孤独症组DPOAE异常率增高,1kHz及1.5kHz平均幅值及1kHz引出率降低,与对照组比较有显著性差异(P〈0.05)。结论孤独症儿童ABR潜伏期延长,DPOAE测试异常率增高,提示脑干听觉通路传导异常,可能是引起孤独症儿童广泛感觉系统发育障碍,使言语、认知、社会等方面异常发育的原因之一。 相似文献
10.
目的研究高刺激率听觉脑干反应(Auditory brainstem response,ABR)检测对青年急性耳鸣的临床意义。方法选取青年急性耳鸣58耳与正常青年44耳,分别进行高、低刺激率ABR检测,比较波Ⅰ、Ⅲ、Ⅴ的潜伏期(peaklatency,PL)和Ⅰ~Ⅲ、Ⅲ~Ⅴ和Ⅰ~Ⅴ峰间潜伏期(interpeak latency,IPL)及两种刺激速率PL差值(ΔPL)、IPL差值(ΔIPL)。结果采用51.1次/s与11.1次/s的波PL及IPL的差值作为分析参数:耳鸣组波ⅠPL差值较正常组缩短,有统计学意义(P〈0.05);Ⅰ~ⅤIPL差值较正常组延长,差异具有显著性(P〈0.01)。正常组与耳鸣组高、低刺激率ABRⅠ~ⅤIPL差值〉0.272ms的耳数分别为1耳和28耳。结论高刺激率ABR较常规ABR对青年急性耳鸣的检测更为敏感,可作为耳鸣患者的一种临床检查方法。 相似文献
11.
The expression of vascular endothelial growth factor (VEGF) and VEGF‐C in early laryngeal cancer: relationship with radioresistance Angiogenesis is essential for tumour growth and invasion. Vascular endothelial growth factor (VEGF) is a prime mediator of tumour angiogenesis. VEGF‐C is a closely related protein that effects lymphatic endothelial cells and may be important in the process of lymphatic metastasis. The purpose of this study was to evaluate the expression of these cytokines in patients with T1 and T2a glottic, squamous cell carcinoma, in comparison with normal epithelial control tissue, to ascertain any association with radioresistance. Twenty‐two tumours treated by radiotherapy (13 radiosensitive, nine radioresistant) and seven normal control tissues were studied. The minimum follow‐up was 2 years after radiotherapy. Expression of VEGF and VEGF‐C was evaluated by immunohistochemistry of formalin‐fixed, paraffin‐embedded biopsy specimens. Analysis was carried out using a quantitative computer image analyser. Both VEGF and VEGF‐C were detectable in tumour and normal control specimens. There was increased expression in tumour specimens of both VEGF (P = 0.03) and VEGF‐C (P < 0.001). In addition, the expression of VEGF‐C was associated with tumours of higher histological grade (P = 0.021). There was, however, no difference in VEGF and VEGF‐C expression between radioresistant and radiosensitive tumours. The expression of VEGF and VEGF‐C is increased in early laryngeal squamous cell carcinoma (SCC). However, measuring the expression of these proteins cannot predict radioresistance in this tumour group. 相似文献
12.
《Acta oto-laryngologica》2012,132(4):15-19
The conventional therapeutic regimen for maxillary sinus carcinoma consists of dissection of the maxilla, full-dose irradiation and extensive chemotherapy. However, the results obtained with this treatment are often poor. Even when patients recover, their quality of life is significantly reduced as a result of deformity of facial structures and swallowing and articulation dysfunctions. A retrospective analysis of 68 patients with maxillary sinus carcinoma treated with the Kitasato modality between 1975 and 1999 was conducted. All patients underwent pergingival maxillary sinus surgery combined with pre- and postoperative irradiation therapy with standardized total doses of 16 Gy; the postoperative irradiation was given in combination with regional intra-arterial infusion chemotherapy administered via the superficial temporal artery. All visible tumor lesions were removed where possible in order to preserve or facilitate cellular immunity after surgery. The cumulative 5-year survival rates were 85.7% for Stage II patients, 88.1% for Stage III, 76.6% for Stage IVA and 75.0% for Stage IVB. 相似文献
13.
《Acta oto-laryngologica》2012,132(5):531-536
In recent years a considerable effort has been made to establish the use of different surgical techniques for the treatment of obstructive sleep apnea syndrome (OSAS). Nevertheless, treatment of hypopharyngeal obstruction due to tongue base hypertrophy remains in many ways an unsolved problem. The aim of this study was to evaluate the safety and efficacy of tongue base reduction with temperature-controlled radiofrequency volumetric tissue reduction in the treatment of OSAS. Twenty patients with OSAS and tongue base hypertrophy were treated with radiofrequency tissue ablation. An intensified treatment protocol was used, delivering 2,800 J per treatment session under local anesthesia. Two nights of polysomnography testing were performed before and after treatment. Daytime sleepiness, snoring and postoperative morbidity were assessed using questionnaires. Mean respiratory disturbance index (RDI) was reduced from 32.1 to 24.9/h after a mean of 3.4 treatment sessions. Six patients (33%) were cured after the procedure (reduction in RDI of S 50% and a postoperative RDI of <15/h) and ten (55%) showed an improvement of >20% in their RDI. Daytime sleepiness and snoring improved significantly. Peri- and postoperative morbidity was low; one severe complication occurred (tongue base abscess). We were able to achieve similar cure and responder rates to those reported in a recently published pilot study but with a reduced number of treatment sessions. We believe that this technique may improve patient acceptance and have beneficial cost implications. 相似文献
14.
《Acta oto-laryngologica》2012,132(6):607-612
We studied click-evoked potentials in the anterior horn of the spinal cord in 17 cats. A concentric needle electrode was inserted into the anterior horn of the spinal cord at levels C3-C6. Potentials evoked with 105 dB SPL clicks were recorded with a peak latency of 4.89-5.10 ms only at the C3 level. These responses were observed 45-60 dB SPL above the auditory brainstem response (ABR) threshold, and no potentials were evoked by stimulation of the contralateral ear. Average was performed 100 times with changes in stimulation frequency of 1-20 Hz. The amplitude of the potentials decreased with increasing stimulus frequency, but there were no changes in ABRs. The responses disappeared after destruction of the medial vestibulospinal tract at the obex level, but ABRs were still recorded. The spinal nucleus of the accessory nerves was located in the anterior horn of the spinal cord at levels C1-C6, and the sternocleidomastoid muscle motoneurons were found at levels C1-C3. The click-evoked potentials recorded in this study reflect responses of the spinal nucleus of accessory nerves through the vestibulospinal tract to click stimulation. The responses have the same characteristics as vestibular-evoked myogenic potentials that can be recorded using surface electrodes over the sternocleidomastoid muscles of humans. 相似文献
15.
16.
17.
18.
19.
One hundred and nine congenital nasal masses which presented to two children's hospitals over a 20 year period are reviewed. The diagnosis of the nasal mass is discussed with respect to age, mode of presentation, and site of the lesion, and a management protocol is advocated. 相似文献
20.
Obstructive sleep apnea syndrome (OSAS) is characterized by snoring and apnea during sleep leading to decreased oxygen saturation and disturbed sleep, excessive daytime sleepiness and neuropsychological disturbances. This study investigates cognitive neuropsychological abilities in a group of 53 OSAS patients before and after treatment with uvulopalatopharyngoplasty. General intellectual ability, verbal learning and memory as well as executive functioning were measured at baseline and 6 months postoperatively. After surgery there were significant improvements in verbal learning and memory (mean change - 39, SD 57.3, p <0.001), recall (mean change - 24.3, SD 39.3, p <0.001) and executive functioning (as assessed by percentage of errors on the Wisconsin Card Sorting Test; mean change-9.1, SD 15.7, p <0.001). These improvements were in accordance with improvements in the degree of sleep apnea, the oxygen desaturation index (mean change -9.7, SD 15.9, p <0.001) and arterial minimum oxygen saturation (mean change 4.5%, SD 10.2%, p <0.01). Surgical treatment seems to improve verbal learning, memory and recall and executive functions in parallel with better oxygenation in OSAS. 相似文献