鼻内镜下导管法咽鼓管吹张及鼓室给药治疗非化脓性中耳炎

目的 观察鼻内镜下导管法咽鼓管吹张及鼓室给药治疗非化脓性中耳炎的疗效。方法 30例由咽鼓管功能不良引起的、以鼓膜内陷为主要表现的慢性分泌性中耳炎患者，在鼻内镜引导下行导管法咽鼓管吹张，并经导管吹人泼尼松龙和玻璃酸钠混合液体2ml，隔日1次，共7～lO次，检查咽鼓管功能及鼓膜形态，检测听力．评估耳鸣及耳闭塞感变化。结果30例咽鼓管功能明显改善或恢复正常，鼓膜内陷不同程度缓解，无粘连发生。纯音听阈（0．5，1．0，2．0，4．0kHz平均听阈）下降10-30dB28例，无变化2例；耳鸣消失19例，减轻7例，无效4例：耳闭塞感消失26例，明显减轻4例。结论 鼻内镜下导管法咽鼓管吹张及鼓室给药治疗由咽鼓管功能不良引起的、以鼓膜内陷为主要表现的慢性分泌性中耳炎，能改善听力，缓解耳鸣及耳闭塞感症状。其操作简单，患者痛苦小，易于接受。     

鼻内镜下咽鼓管扩张导管治疗慢性分泌性中耳炎13例分析

目的 探讨鼻内镜下咽鼓管扩张导管治疗慢性分泌性中耳炎的方法和疗效。方法 对13例(15耳)慢性分泌性中耳炎患者采用经鼻内镜下插入咽鼓管扩张导管至其峡部,加压并持续扩张其球囊2min,然后经外耳道行鼓膜穿刺抽液,用地塞米松冲洗鼓室,再用含丝裂霉素C明胶海绵涂擦鼓膜穿刺部5min。结果 全部病例均一次插管成功,随访4~5个月,11例(11耳)疗效满意,耳闷胀感消失,声阻抗提示鼓室图由“B”型恢复为“A”型,纯音听阈测试提示听力提高10~20dB,内镜检查鼓室无积液,无感染、出血、鼓膜穿孔等并发症。2例伴有过敏性鼻炎患者(4耳)于术后3个月又出现闷胀感,轻度听力下降,但无鼓室积液,经抗炎和抗过敏治疗后症状消失。结论 鼻内镜下咽鼓管扩张导管治疗分泌性中耳炎操作简便、微创,疗效好。     

Middle ear ventilation tubes

Twenty years have now passed since the first tube was placed through the tympanic membrane for middle ear ventilation. In this relatively short period of time, many different ideas for tube design have emerged and are presented. The types of middle ear fluid formation and the relationship of this formation to impaired eustachian tube function are discussed. The main indication for indwelling tubes is chronic secretory otitis media with effusion which fails to respond to conservative treatment; however, indications have been expanded with continued experience. The complications associated with the use of middle ear ventilation tubes are presented. Five years' experience using ventilation tubes in 1,460 ears is reported. Conclusions are based on data compiled from this study.     

Clearance by the mucociliary system in 'simple chronic otitis media'.

This is a study of the rate of middle ear clearance in chronic otitis media and atelectatic ears. The clearance rate was measured with the aid of non-soluble saccharin, introduced into the middle ear through an existing perforation in 'chronic ears', or through a ventilating tube in atelectatic ears. Cholesteatomatous ears were excluded. Altogether 122 ears were examined and about two-thirds of the subjects felt the sweet taste in their mouths thereafter. The average time it took for the saccharin to be transported from the middle ear to the taste buds was 33' 22" minutes in non-infected (i.e. dry) chronic ears (38 patients or 66 per cent). Wet or infected ears with chronic otitis media (30 patients, or 58 per cent) showed a slower transport rate, averaging 54' 22" minutes--the difference was significant at the 0.01 level. 8 (63 per cent) of the atelectatic ears transported the saccharin at an average rate of 50' 25". This study demonstrated that most ears with 'simple' chronic otitis media and atelectatic ears have a patent eustachian tube and that their mucociliary system can transport foreign particles through it. When the ear is infected, transport tends to be slowed down.     

Direct measurement of middle ear pressure through the eustachian tube

Summary We report a method for measuring middle ear pressure through the eustachian tube. We used a 1-mm-diameter micro-tip catheter pressure transducer (Mikro-tip) and inserted this into the tympanic cavity through the eustachian tube. In preliminary studies, we measured four normal ears, two ears with tubal dysfunction, one ear with a dry perforation and 13 ears with otitis media with effusion (OME). Among those ears with OME, three showed negative middle ear pressure, three slight positive pressure and one normal pressure. These findings suggest that our transtubal method is reliable and useful for measuring middle ear pressure.     

Eustachian tube function and the middle ear

Eustachian tube dysfunction has been linked to causing middle ear pathology. One of the sequelae seen is tympanic membrane retraction. Concern occurs when this physiological state becomes chronic, leading to adhesive otitis media followed by debris collection and fulminate cholesteatoma. This chapter explores the role the eustachian tube plays in regulating middle ear and mastoid aeration, the causes of eustachian tube dysfunction, and the treatment of this disorder.     

Direct measurement of middle ear pressure through the eustachian tube

We report a method for measuring middle ear pressure through the eustachian tube. We used a 1-mm-diameter micro-tip catheter pressure transducer (Mikro-tip) and inserted this into the tympanic cavity through the eustachian tube. In preliminary studies, we measured four normal ears, two ears with tubal dysfunction, one ear with a dry perforation and 13 ears with otitis media with effusion (OME). Among those ears with OME, three showed negative middle ear pressure, three slight positive pressure and one normal pressure. These findings suggest that our transtubal method is reliable and useful for measuring middle ear pressure.     

建立大鼠分泌性中耳炎模型

目的采用SD大鼠建立分泌性中耳炎动物模型,运用于科研工作。方法34只SD大鼠,一侧耳为实验耳,对侧耳为对照耳,经软腭入路采用三氯醋酸化学烧灼咽口,耳内镜、声导抗和听性脑干反应（auditory brainstem response,ABR）检测建模情况,观察HE染色光镜下咽鼓管及鼓室黏膜组织形态变化。结果34耳中有28耳鼓膜内表面黏附黏稠分泌物,光锥消失,声导抗示造模后第2～6天峰压值明显改变,造模后第6天反应阈有所升高,打开听泡可见鼓室积液,黏膜水肿,光镜下见多量炎性细胞浸润。结论采用咽鼓管咽口化学烧灼法模拟咽鼓管功能不良建立分泌性中耳炎动物模型切实可行。     

Spontaneous hemotympanum associated with chronic middle ear effusion.

Idiopathic or spontaneous hemotympanum (SH) is an uncommon disorder characterized by a black-blue tympanic membrane discoloration as a result of recurrent hemorrhage in the middle ear or mastoid in the presence of eustachian tube obstruction. Initial evaluation of a blue middle ear mass includes an audiogram and computed tomography (CT) scan with intravenous contrast. CT may identify congenital vascular malformation or bone erosion due to chronic otitis media or tumors. A magnetic resonance imaging (MRI) scan is useful in distinguishing hemotympanum from a vascular tumor and avoiding angiography, which is associated with significant morbidity. Evidence suggests that secretory otitis media and SH are different phases of the same disease process.     

中耳炎颞骨咽鼓管峡部粘-软骨膜的组织病理学观察

目的：了解中耳炎性病咽鼓管峡部粘－软骨膜的影响。方法：用光镜对３２耳各型中耳炎颞骨（中耳炎组）与５０耳正常颞骨（正常组）标本连续切片的咽这峡部粘－软骨膜，中耳腔鼓岬粘骨组织病理学比较观察。结果：中耳炎组和正常组颞骨标本咽鼓管峡部均无病理性阻塞；中耳炎组峡部粘－软骨膜厚度测量和病理观察，未见有明显炎症改变，与正常组比较无明显差异；而其中耳腔粘骨膜均明显炎症病变。这种炎症截然不同反应的界限恰好在咽这的     

Structural changes in the rat middle ear mucosa due to endotoxin and eustachian tube obstruction

The middle ears of 48 rats were used to examine the effects of endotoxin injection, eustachian tube obstruction or a combination of eustachian tube obstruction and endotoxin injection. Animals were killed after 1, 2, 4, or 12 weeks and the middle ears processed for light and scanning electron microscopy. Compared to the normal middle ear mucosa, the epithelial layer was more pseudostratified, cuboidal or cylindrical after endotoxin injection or obstruction of the eustachian tube. In the early phase, numerous ciliated cells occurred in areas originally almost devoid of these cells. At 3 months, degeneration of ciliated cells was observed. The combination of eustachian tube obstruction and endotoxin injection also induced a more pseudostratified, cuboidal or cylindrical epithelium with an increased number of goblet cells. However, an early decrease occurred in the number of ciliated cells in the tympanic orifice of the eustachian tube. Furthermore, inflammatory cells, mainly PMNs, macrophages and lymphocytes, invaded the subepithelial layer after eustachian tube obstruction and endotoxin injection. These structural changes resulted in an impairment of the mucociliary transport system for clearance of the middle ear cavity. For this reason we believe that both endotoxin and eustachian tube obstruction or dysfunction play an important role in inducing persistent mucosal changes in the middle ear cavity, thereby prolonging otitis media with effusion. Received: 13 February 1998 / Accepted: 4 August 1998     

咽鼓管冠脉球囊扩张联合鼓膜置管治疗复发性分泌性中耳炎

目的观察咽鼓管冠脉球囊扩张联合鼓膜置管治疗复发性分泌性中耳炎的疗效。方法将49例（65耳）复发性分泌性中耳炎患者随机分为A、B、C组,A组为试验组,接受咽鼓管球囊扩张联合鼓膜置管治疗,共16例（22耳）,B和C组是对照组,B组单纯接受咽鼓管球囊扩张治疗,共16例（21耳）,C组单纯接受鼓膜置管治疗,共17例（22耳）。所有球囊扩张器械使用冠状动脉球囊。患者术后1、3、6个月定期随访。术后通过咽鼓管功能障碍7项问卷评分（the seven item eustachian tube dysfunction questionair,ETDQ 7）、咽鼓管评分量表（eustachian tube score,ETS）及声导抗进行疗效评价。结果3组患者术后1、3、6个月咽鼓管功能均有提高。鼓膜愈合后复查,A型鼓室图逐渐增多。A组术后3、6个月ETDQ 7评分均较B组和C组低,对照组C组较B组低。术后3、6个月ETS得分A组均高于B、C组,对照组之间C组较B组高。 结论对于复发性分泌性中耳炎的患者咽鼓管球囊扩张联合鼓膜置管能显著改善患者咽鼓管功能,提高分泌性中耳炎的治疗效果。冠状动脉球囊价格较常规咽鼓管球囊便宜,用于治疗分泌性中耳炎取得了同样好的疗效。     

Diagnosis and management of eustachian tube malfunction

The eustachian tube is an essential part of the pressure regulating system of the middle ear. The physiologic function of the tube is to equalize the middle ear pressure with that of the atmosphere, and at the same time make the middle ear independent of the nasopharyngeal environment with its loud sounds, extensive respiratory pressure changes, and potentially harmful bacterial flora. Thus, the protective closing action is essential in the normal physiology of the eustachian tube, and lack of protection is central in tubal malfunction. We have come to consider eustachian tube closing failure and the subsequent induction of negative middle ear pressure as an important causative factor in the development of chronic ear disease, for example, persistent middle ear effusion and manifest retraction of the tympanic membrane. Here, the patient's behavior may be of more importance than the simple tubal mechanics. In the presence of tubal closing failure, if the patient sniffs habitually, the middle ear cavity will be evacuated repeatedly. This constitutes a repetitive barotrauma which may have secondary effects. As a result of the negative pressure the tympanic membrane retracts, and increased transudation and secretion of fluid may give rise to effusion. Tubal closing failure also implies reduced protection against ascending infection with increased susceptibility to acute otitis media. Repeated sniff-induced barotrauma and repeated purulent infection may together be responsible for the development of manifest structural lesions seen in chronic ear disease. Is it possible to determine the function of the eustachian tube? This question is crucial since it is difficult or impossible to give normative values for tubal function tests. The variability of tubal responses with time has been found to be considerable. Thus, the result of a test represents only one specific moment in time, having little prognostic value. Tubal function is a continuous and composite variable that cannot be "determined" according to a static scheme. Our knowledge of eustachian tube physiology is still fragmentary, and continued study is necessary in order to learn more. Presently, tubal function tests have little value from the clinical viewpoint. When a tympanoplastic procedure is considered, the need for surgery should be determined by the clinical judgment based on the otomicroscopic findings and the hearing. In the case of a central perforation of the eardrum the prognosis for hearing is good, irrespective of results obtained in tubal function tests.(ABSTRACT TRUNCATED AT 400 WORDS)     

分泌性中耳炎咽鼓管及鼓室黏膜的光镜及电镜观察

目的：探讨分泌性中耳炎的发病原因，为临床治疗提供理论依据。方法：通过微波烧灼双侧咽鼓管口，建立分泌性中耳炎动物模型。光镜观察比较咽鼓管管腔及黏一软骨膜和鼓室黏膜变化。电镜观察咽鼓管鼓室段暗颗粒分泌细胞及其表面活性物质样板层体的变化。结果：各组咽鼓管管腔通畅，咽鼓管黏一软骨膜不易受炎症浸润及负压影响。鼓室黏膜水肿、增生、炎性细胞浸润明显，暗颗粒细胞分泌功能受损，表面活性物质板层体结构明显减少或消失。结论：咽鼓管黏一软骨膜在分泌性中耳炎发病过程中起重要作用。表面活性物质减少与分泌性中耳炎的发生密切相关。     

Scintigraphic evaluation of nasal mucociliary activity in unilateral chronic otitis media

Mucociliary clearance is a key defence mechanism in human upper and lower airways. Although mucociliary activity is present in both ears of the patients, most cases of chronic otitis media are unilateral.In this study, we aim to evaluate the difference between nasal mucociliary activity of the affected and non-affected sides in patients with unilateral chronic otitis media. Both nasal transport times of 36 patients with unilateral chronic otitis media were compared statistically with each other and with the control group by independent samples t-test. The nasal mucociliary transport times of the nasal cavity at the same side as the affected ear and as the non-affected ear are significantly different, in the same patients. Our study shows that impaired or decreased nasal mucociliary activity may result in dysfunction of the eustachian tube and middle-ear ciliary activity, which plays an important role in the aetiopathogenesis of chronic otitis media.     

First forty-eight hours of developing otitis media: an experimental study

The early inflammatory changes in the tympanic membrane were explored in 2 rat models. Acute otitis media was induced by instillation of Streptococcus pneumoniae type 3 into the middle ear cavity, and otitis media with effusion was induced by blockage of the eustachian tube. Otomicroscopic examination was performed before the rats were painlessly sacrificed at 3, 6, 9, 12, 18, 24, or 48 hours after initiation of the otitis media conditions. The tympanic membrane was studied by light and electron microscopy. Both acute otitis media and otitis media with effusion caused early inflammatory changes of the tympanic membrane, and the pars flaccida was the portion that reacted first. The inflammatory alterations were most pronounced in the acute otitis media model. The course of inflammation showed a bimodal pattern with an early deposition of a filamentous material with a band pattern, typical of fibrin. Despite a fluid-filled middle ear cavity, the inflammatory changes in the otitis media with effusion model were moderate, as was consistent with the clinical appearance of the tympanic membrane.     

鼓室成形术后的咽鼓管功能检测及意义

目的探讨咽鼓管功能对慢性化脓性中耳炎鼓室成形术后疗效的影响。方法用咽鼓管鼓室-气流动态图(tube-tympanoaerodynamicgraphy,TTAG)法及音响法对53耳鼓室成形术后的咽鼓管功能进行检测,并分析鼓室成形术后咽鼓管功能正常耳与异常耳的鼓膜生长及听力变化情况;并用鼻窦镜观察咽鼓管咽口,分析咽鼓管咽口与咽鼓管功能的关系。结果53耳鼓室成形术后咽鼓管功能正常37耳,其中29耳鼓膜生长良好;咽鼓管功能异常16耳中,有4耳鼓膜生长良好,比较咽鼓管功能正常耳与异常耳鼓膜生长良好耳数,两者有显著性差异(P<0.05);53耳术后有9耳咽鼓管咽口充血肿胀,其中2耳咽鼓管功能正常,7耳咽鼓管功能不良,提示术后咽鼓管功能障碍与咽鼓管咽口病变有关。结论慢性化脓性中耳炎鼓室成形术后咽鼓管功能与疗效关系密切,术后咽鼓管功能障碍可能是导致手术失败的原因之一。     

Condition of the anterior part of the middle ear cleft in acquired cholesteatoma

CONCLUSION: The high rate of flogistic suffering of the controlateral ear seems to suggest a correlation between tubal dysfunction and acquired cholesteatoma but the low rate of pathological reports regarding the anterior mesotympanic region exclude a eustachian tube dysfunction (EDT) at the time of surgery. These observations support the hypothesis that ETD is not a factor that may influence the evolution of the cholesteatoma. OBJECTIVES: To evaluate the role of eustachian tube function in the middle ear secondary acquired cholesteatoma. PATIENTS AND METHODS: This was a case series study. The study group consisted of 72 patients submitted to tympanoplasty for middle ear secondary acquired cholesteatoma. RESULTS: The contralateral ear was normal in 37 subjects (51%) and affected by chronic otitis media in 35 (49%); the anterior part of middle ear cleft was normal in 53 patients (74%). There was no significant relationship between the contralateral ear condition and the status of the anterior region of middle ear (p>0.05). The site of retraction or the presence of tympanic perforation with skin migration was not related to the condition of the protympanum. Otorrhea, cholesteatoma extension, and ossicular chain lesions were not significantly related to the status of the anterior part of the middle ear cleft (p>0.05).     

Effect of formalin-fixed Hemophilus influenzae and Streptococcus pneumoniae on dye transport by the chinchilla eustachian tube

An in situ method for measuring the ability of the middle ear and eustachian tube ciliated epithelium to transport dye to the nasopharynx was used to assess the role endotoxin-containing killed bacteria have on the development of otitis media with effusion. In addition, electron microscopy was used to monitor histological changes induced by exposure to these organisms and the ability of the mucosa to recover. The results indicated that exposure to a killed gram-negative but not a gram-positive otitis media pathogen leads to early production of middle ear fluid, evidence of capillary leakage and significant slowing of mucociliary transport. The damage was, however, reversible with the epithelium returning to normal both functionally and histologically within 7 days of exposure.     

Transient evoked otoacoustic emissions in patients with middle ear disorders

The aim of this study is to investigate the middle ear dynamic characteristics and their influence on TEOAEs in patients with middle ear disorders. The middle ear dynamic characteristics and TEOAE findings were investigated in 89 patients with middle ear disorders using the sweep frequency impedance (SFI) meter and the ILO88 system, respectively. These patients were divided into six subcategories: tympanic membrane aberrations, otitis media with effusion, chronic otitis media, tympanic membrane perforation, otosclerosis, and ossicular chain dislocation. Details of the TEOAE frequency characteristics were compared with the individual's middle ear dynamic characteristics. TEOAE status as a function of hearing threshold and middle ear dynamic characteristics was also examined. The results showed that the middle ear dynamic characteristics in patients with middle ear disorders correlated with the TEOAE frequency characteristics and amplitudes. The hearing level and middle ear mobility were the controlling factors affecting TEOAE status. Using both non-linear and linear stimulus modes, larger TEOAE responses were obtained when the hearing level was better than 20 dB HL, and there was moderately good middle ear mobility. Moreover, TEOAEs were absent using the non-linear mode when the hearing level was worse than 30 dB HL, whereas with the linear mode. TEOAEs were recordable even with hearing losses of up to 40 dB HL in patients with middle ear disorders. A higher incidence of recordable TEOAEs was found in the subgroups with tympanic membrane abnormalities and secretory otitis media when compared with the other subgroups. No TEOAEs were recordable in patients with chronic otitis media.