Chronisch obstruktive Tubenfunktionsstörung des Erwachsenen

Patulous Eustachian Tube Dysfunction Symptoms Following Balloon Dilation

OBJECTIVE

Clinicians increasingly perform balloon dilation of the Eustachian tube (BDET) to treat obstructive Eustachian tube dysfunction (OETD) refractory to medical management. Reported complications have been limited and include patulous Eustachian tube dysfunction (PETD). This multicenter study investigates the incidence of PETD and associated factors.

METHODS

Consecutive patients at three academic centers undergoing BDET (January 2014-November 2019) for OETD refractory to medical therapy were included. PETD was diagnosed by patient-reported symptoms of autophony of voice and/or breathing. Associated factors studied include age, sex, comorbidities, balloon size, duration of inflation, repeat BDET, and adjunctive procedures.

RESULTS

BDET procedures (n = 295 Eustachian tubes) were performed on 182 patients. Mean age was 38.4 years (SD 21.0; range 7-78) and 41.2% were female. Twenty cases of PETD (6.8% of procedures; 9.3% of patients) occurred following BDET. Risk of PETD did not vary by institution, comorbidities, or adjunctive procedure. Age ≤18 years (adjusted risk ratio [RR] = 3.26; 95% confidence interval [CI]: 1.24, 8.54; p = 0.02), repeat BDET (RR = 3.26; 95% CI: 2.15, 4.96; p < 0.001), and severe preoperative Eustachian tube inflammation (RR = 2.83; 95% CI: 1.10, 7.28; p = 0.03) were associated with increased risk of developing PETD in the multivariable model. Most symptoms were reported as mild or intermittent.

CONCLUSION

BDET caused PETD symptoms in approximately 7% of dilated Eustachian tubes in this study with increased risk for younger patients and those with severe inflammation or undergoing repeat dilations. Although most cases were self-limited, symptoms can persist. Awareness of risk factors may aid clinicians in limiting this complication.

LEVEL OF EVIDENCE

4 Laryngoscope, 133:3152-3157, 2023.

Development of an In Vivo Model for Eustachian Tube Dysfunction

Otitis media is often connected to Eustachian tube dysfunction (ETD). Until now, there was no large animal model available for the examination of new treatment methods such as stents for the Eustachian tube (ET). Thus, the aim of the study was to develop a method to reproducibly induce ETD by injection of fillers and without permanent closure of the ET. Tools for safe injection of hyaluronic acid (HA) in the surrounding of the ET were developed. In ex vivo experiments, HA mixed with Imeron® was injected close to the nasopharyngeal orifice of the ET of blackface sheep. The established depot was visualized using cone beam computer tomography and magnetic resonance imaging, and stents could be placed into the ET. A reliable position of the HA depot was achieved. This method was transferred to in vivo, and middle ear ventilation was investigated by tympanometry. ETD was achieved with amounts of 2.5 mL HA or higher. None of the animals showed any sign of discomfort or complications. The induced ETD lasted for 3 to 13 (maximum observation period) weeks and was also combined with middle ear effusion. A model of ETD based on injection of HA next to the ET was successfully established and is now available to test novel treatment options for ET functionality.

[Two-year experience in the balloon dilatation treatment of children with persistent auditory tube dysfunction]

OBJECTIVE

Is to study the effectiveness of the of balloon dilatation of the auditory tube in children with persistent dysfunction of the auditory tube. Examination and treatment of 28 children aged 5 to 16 years with persistent dysfunction of the auditory tube was performed. To diagnose and objectify the results of the treatment, taking of complaints and medical history of the patient, examination of ENT organs, endoscopic examination of the nose, nasopharynx and otoendoscopy, functional multispiral computed tomography of the auditory tubes, audiological examination (tympanometry, tonal threshold audiometry) were performed. Treatment included balloon dilatation of the auditory tubes. In 25 (89.3%) children, upon repeated examination after 2, 6, 12 months, the clinical, radiological, and audiological parameters were normal.

[Evaluation of standardized questionnaires for diagnosis and differentiation of obstructive and patulous Eustachian tube dysfunction]

Hintergrund

Eine klaffende Tube kann insbesondere durch Autophonie, Druckgefühl und gestörten Höreindruck zu einer Einschränkung der Lebensqualität führen. Bei fehlenden spezifischen Symptomen kann die Diagnose der klaffenden Tube schwierig sein. Insbesondere die Abgrenzung zur chronisch obstruktiven Tubenfunktionsstörung stellt eine Herausforderung dar. Da derzeit kaum standardisierte Diagnostik- und Therapieoptionen zur Verfügung stehen, ist eine strukturierte Untersuchung zur sicheren Diagnostik und wissenschaftlichen Aufarbeitung dieser Erkrankung erforderlich. Für die Diagnostik der chronisch obstruktiven Tubenfunktionsstörung wurde 2012 bereits der „Eustachian Tube Dysfunction Questionnaire“ (ETDQ-7-Fragebogen) nach McCoul entwickelt. Für die klaffende Tube existiert seit 2017 der PHI-10-Fragebogen („patulous Eustachian tube handicap inventory“) nach Kobayashi.

Material und Methoden

Der PHI-10-Fragebogen wurde ins Deutsche übersetzt und an 41 Gesunden, 13 Patienten mit Tinnitus auris, 11 Patienten mit klaffender Tube und 18 Patienten mit chronisch obstruktiver Tubenventilationsstörung getestet. Zusätzlich erfolgte im Vergleich die Auswertung des ETDQ‑7 nach McCoul.

Ergebnisse

Es erfolgt die Präsentation der deutschen Übersetzung des PHI-10 und der Ergebnisse von PHI-10 und ETDQ‑7 in allen Patientengruppen. Der ETDQ‑7 hat das Risiko falsch-positiver Ergebnisse bei Patienten mit klaffender Tube und der PHI-10 bei Patienten mit obstruktiver Tubenfunktionsstörung. Beide untersuchten Fragebögen sind falsch-positiv bei Tinnituspatienten.

Schlussfolgerung

Der PHI-10 (deutsch) und ETDQ‑7 (deutsch) sind eine nützliche Unterstützung der Anamnese bezüglich Tubenfunktionsstörungen. Sie unterscheiden jedoch nur unzureichend zwischen klaffenden und obstruktiven Tubenfunktionsstörungen und eignen sich nicht für Patienten mit Tinnitus. Die Stärke der Fragebögen ist in der Verlaufskontrolle und dem Monitoring von Therapieergebnissen zu sehen.

Endoscopy Guided Eustachian Tube Balloon Dilation: Our Experiences

Introduction:

Eustachian tube (ET) dysfunction is a common clinical entity but its treatment is still challenging to Otorhinolaryngologists. This study is done to know the effectiveness of transnasal endoscopic balloon dilatation of eustachian tube for treatment of chronic eustachian tube dysfunction.

Materials and Methods:

It is a retrospective observational study conducted between May 2018 to June 2019 at IMS and SUM Hospital, Siksha 'O' Anusandhan University, Bhubaneswar, Odisha, India. Twenty one patients were identified with diagnosis of ET dysfunction and assigned to this study. The transnasal endoscopic procedure was done to dilate the cartilaginous part of the eustachian tube with a balloon catheter. Preoperative computed tomography was done in all cases. All patients were post-operatively assessed in 1^st, 2^nd and 8^th weeks after the procedure.

Result:

Balloon dilatation of the eustachian tube was easily performed in all cases of this study. No abnormality including carotid canal was seen before this procedure. All except 2 cases revealed significant improvement in the ET functions. There was no damage to any vital structures like internal carotid artery in this study.

Conclusion:

The majority of the patients participated in this study showed positive outcome after balloon dilation of eustachian tube. It is a feasible and safe procedure for dilating the eustachian tube. This treatment is a very promising and requires more research on this aspect.

Subjective and Objective Effectiveness of Eustachian Tube Balloon Dilatation for Patients With Eustachian Tube Dysfunction-Evaluation in a Pressure Chamber

INTRODUCTION

The Eustachian tube plays a crucial role in pressure equalization between the middle ear and ambient pressure for fast and large pressure differences. In patients with chronic Eustachian tube dysfunction, Eustachian tube balloon dilatation is increasingly used as surgical therapy. Subjectively, many patients report an improvement of the symptoms postoperatively. Hence, there is a need to objectively measure this effect.

METHODS

The objectivity of Eustachian tube balloon dilatation was evaluated using a precise method of measuring Eustachian tube function. In a hypo/hyperbaric pressure chamber, 23 ears in 13 patients were exposed to a standardized profile of compression and decompression before Eustachian tube balloon dilatation and 4 weeks afterwards. Standardized parameters of Eustachian tube function were determined and statistically compared before and 4 weeks after intervention. In addition, an Eustachian Tube Dysfunction Questionnaire-7 (ETDQ7) questionnaire was completed beforehand and 4 weeks postoperatively to determine subjective surgical success.

RESULTS

The results from the ETDQ7 questionnaire showed a significant improvement in symptoms after Eustachian tube balloon dilatation (p = 0.0002). Objective measurements results showed a significant reduction of the Eustachian tube opening pressure during pressure decrease 4 weeks after intervention (p = 0.0012).

CONCLUSION

Eustachian tube balloon dilatation significantly reduced Eustachian tube opening pressure, in addition to subjective improvement of symptoms determined by ETDQ7.

A Novel Surgery Classification for Endoscopic Approaches to Middle Ear Cholesteatoma

This study aimed to develop a novel surgery classification for an endoscopic approach to middle ear cholesteatoma. We retrospectively analyzed the surgical approaches and outcomes of patients with middle ear cholesteatoma. Middle ear cholesteatoma surgeries were divided into four types and two special types as follows: type I, attic retraction pocket, which only requires tympanostomy tube placement or retraction pocket resection and cartilage reconstruction; type II, cholesteatoma which is limited to the attic or in which endoscopy can confirm complete removal of mastoid cholesteatoma lesions, including type II a, requiring only use of a curette, and type II b, requiring use of an electric drill or chisel; type III, cholesteatoma not limited to the attic, in which endoscopy cannot confirm complete removal of mastoid cholesteatoma lesions, requiring the combined use of endoscope and microscope to perform endoscopic tympanoplasty and "Canal Wall Up" mastoidectomy; type IV, extensive involvement of mastoid cavity cholesteatoma lesions and/or cases with a potential risk of complications, removal of which can only be performed under a microscope for "Canal Wall Down" mastoidectomy. In addition, there were two special types: "difficult external auditory canal" and congenital cholesteatoma in children. In our system, type I and type II middle ear cholesteatoma surgery was completely performed under an endoscope alone. However, estimating the extent of the lesions, determining the choice of mastoid opening and reestablishing ventilation are the key points for an endoscopic approach to middle ear cholesteatoma. The classification of endoscopic middle ear cholesteatoma surgery may benefit the selection of surgical indications.

Effect of balloon dilation eustachian tuboplasty combined with tympanic tube insertion in the treatment of chronic recurrent secretory otitis media

PURPOSE

To investigate the long-term clinical effect of balloon dilation eustachian tuboplasty (BET) combined with tympanic tube insertion (TTI) in the treatment of chronic recurrent secretory otitis media (CRSOM).

MATERIALS AND METHODS

A retrospective study of 30 cases of CRSOM treated with BET combined with TTI under general anesthesia between August 2014 and September 2016. Thirty cases of CRSOM treated with TTI in the same period were taken as the control group. All cases were followed over 24 months. The scores of eustachian tube (ET) function preoperation, 1 month, 6 months, 12 months, and 24 months postoperation were collected and analyzed, respectively. A satisfaction questionnaire was used to evaluate the therapy at 24-months postoperation.

RESULTS

The symptoms were significantly improved and the ET score was obviously increased postsurgery in most cases treated with BET plus TTI compared with those treated with TTI alone. The highest ET score was obtained at 6 months post BET. Five (14%) cases (6 ears) of CRSOM recurred. The 24-month postoperation follow-up questionnaire showed that 84.6% of the patients were satisfied with the treatment, while ten cases (25%) in the TTI group recurred.

CONCLUSION

BET combined with TTI surgery is an effective therapy for patients with CRSOM.

Consensus on treatment of obstructive Eustachian tube dysfunction with balloon Eustachian tuboplasty

OBJECTIVE

There is a great variability in diagnosis of obstructive Eustachian tube dysfunction and its treatment by balloon Eustachian tuboplasty (BET). The aim of this paper was to present a consensus on indications, contraindications, methodology, complications and results after BET.

MATERIAL AND METHODS

We obtained a consensus on BET, after a systematic review of the literature on BET from 1966 to November 2018, using MESH terms «Eustachian tube and (dilation or dysfunction)», including a total of 1.943 papers in Spanish, English, German and French. We selected 139 papers with a relevant abstract, including two international consensuses, seven systematic revisions, and two randomised control trials on BET.

RESULTS

The indications for BET are barotrauma, serous otitis media, adhesive otitis, atelectatic middle ear and failure after tympanoplasty, once obstructive Eustachian tube dysfunction is confirmed. BET is more effective in barotrauma and serous otitis media. There are high- evidence reports on BET showing good results that persist long-term, as compared to conservative medical treatment.

CONCLUSIONS

BET is a surgical, minimally invasive treatment that has shown its effectiveness and safety in obstructive Eustachian tube dysfunction in adults and children. It is most effective in barotrauma and serous otitis media.

Balloon dilation of Eustachian tube combined with tympanostomy tube insertion and middle ear pressure equalization therapy for recurrent secretory otitis media

Objective to report outcomes of balloon dilation Eustachian tuboplasty combined with tympanostomy tube insertion and middle ear pressure equalization therapy in treatment of recurrent secretory otitis media. Methods Fifty one patients with recurrent secretory otitis media (62 ears) underwent balloon dilation of Eustachian tube and tympanic tube insertion under general anesthesia, followed by long term middle ear pressure equalization therapies. The Eustachian tube score (ETS) and Eustachian tube function questionnaire (ETDQ-7) were used for pre- and postoperative (up to 12 months) evaluation of Eustachian tube functions. Results The mean ETS score was 2.34 ± 0.97 preoperatively, and 6.17 ± 1.54, 7.23 ± 1.62, 8.24 ± 1.97, and 7.63 ± 1.86 at 1, 3, 6 and 12 months postoperatively, respectively (P < 0.05). The ETDQ-7 score was 4.82 ± 1.07 preoperatively, and 2.20 ± 0.54, 2.32 ± 0.68, 2.53 ± 0.79, and 2.67 ± 0.76 at 1, 3, 6 and 12 months postoperatively, respectively (P < 0.05). Conclusion Balloon dilation of Eustachian tube combined with tympanostomy and catheterization resulted in significant improvement of subjective symptoms and objective evaluation of Eustachian tube functions in most patients with recurrent secretory otitis media, as indicated by the ETS and ETDQ-7 scores, demonstrating high levels of efficacy and patient satisfaction.

Eustachian tube balloon dilation in treatment of equalization problems of freediving spearfishermen

BACKGROUND

Eustachian tube balloon dilation is a minimally invasive surgical procedure used to treat Eustachian tube dysfunction which is not responsive to conventional therapies.

METHODS

In this cohort intervention series we report the results of balloon dilation in treating refractory equalization problems in 20 freediving spearfishermen; in 19 cases the problem was unilateral and in one case bilateral. All the patients had already received medical and insufflation therapy and four patients had also had nasal surgery. None of these treatments or procedures had achieved improvement. We used a 20 mm x 3 mm disposable balloon catheter inserted through a 70-degree guide catheter and inflated up to 12 ATM three times at three different depths of insertion within the Eustachian tube. Every inflation lasted 120 seconds.

RESULTS

Fifteen out of 20 patients improved. Ten patients reported a complete resolution of equalization problems, five showed improvement with persistence of a slight equalization delay on the treated side. Five patients did not report any improvement. Two complications occurred: subcutaneous emphysema of the parotid region in one case; and a mild high frequency (4-8 KHz) sensorineural hearing loss in another patient.

CONCLUSION

Balloon dilation of the Eustachian tube is an effective therapy in the treatment of equalization problems with a good success rate.

Presentation and eustachian tube function test results in children evaluated at a specialty clinic

OBJECTIVES/HYPOTHESIS

Interest in eustachian tube (ET) dysfunction (ETD) has increased with the recent Food and Drug Administration approval of a new device for balloon dilation of the ET (BDET) in adults. However, children have been receiving BDET treatment with ET-specific or sinus balloons around the world and off-label in the United States for years. It is important, therefore, to understand the manifestations of and methods to verify ETD in children.

STUDY DESIGN

Retrospective cross-sectional study.

METHODS

This is a retrospective study of clinical presentations and results of ET function (ETF) tests in children referred to the ETD clinic. An otorhinolaryngology exam, nasopharyngeal videoendoscopy of the ET orifices during swallow and maneuvers, and ETF tests, including inflation deflation, forced response test, and pressure chamber tests, were performed as applicable.

RESULTS

Data for 30 children aged 6.2 to 17.3 years (mean = 12.9 ± 2.8 years) were analyzed. Of 60 ears, 19 (31.7%) had an intact tympanic membrane (TM), 16 (26.7%) had a patent and two had a blocked ventilation tube, and 23 (38.3%) had a TM perforation. Endoscopy of the nasopharynx revealed a large amount of secretions in 19/45 (42.2%); ET orifices and mucosal inflammation in 22/45 (48.8%); a large amount of adenoid tissue in the fossa of Rosenmuller was noted in 21/45 (46.7%). ETF tests revealed abnormal active function in 43/54 ears (79.6%) and abnormal passive function in 40/54 ears (74.1%).

CONCLUSIONS

ETD in children is often associated with residual or regrowth of adenoids and inflammation. Caution should be taken assigning a uniform phenotype and treatment prior to thorough evaluation and testing.

LEVEL OF EVIDENCE

4 Laryngoscope, 129:1218-1228, 2019.

Balloon dilation of the Eustachian tube: clinical experience in the management of 126 children

Balloon dilation of the Eustachian tube has been recently introduced as a novel and minimally invasive method for treating chronic obstructive Eustachian tube dysfunction. For the first time worldwide, we assessed the role of this technique in the treatment of children with Eustachian tube dysfunction who did not respond to other treatments. We retrospectively analysed the medical records of 60 children (mean age: 6.3 years, range: 28 months to 12 years) who underwent balloon dilation of the Eustachian tube using the Bielefeld balloon catheter. In addition, the parents of a further 66 children who underwent balloon dilation (mean age: 8 years, range: 4 to 13 years) were asked to complete a standardised written questionnaire and were interviewed by telephone about the postoperative course of their children. There were no complications during surgery. Clinical symptoms improved in more than 80% of patients. No patient reported a deterioration of symptoms. Of the participating parents, 81.3% were very satisfied or satisfied with the outcome of treatment. Balloon dilation is a rapid, simple and safe method for the treatment of both adults and children with Eustachian tube dysfunction that does not respond to other treatments. Further studies, ideally multicentre studies, are required in order to optimise the definition of existing and potential new indications for this treatment approach and to establish this treatment in the management of children with refractory chronic Eustachian tube dysfunction.

Eustachian Tube Balloon Dilation: Emerging Practice Patterns for a Novel Procedure

OBJECTIVES

To review the role of eustachian tube balloon dilation (ETBD) in the setting of chronic Eustachian tube dysfunction (ETD) and ascertain how ETBD is currently being used in practice today.

METHODS

An online survey included 20 questions designed by 3 investigators to examine how otolaryngologists utilize ETBD in the management of ETD. The survey was distributed to the members of the American Rhinologic Society (ARS), American Otological Society (AOS), and American Neurotology Society (ANS) in their respective annual electronic mailings in April and May of 2017.

RESULTS

A total of 1105 and 633 surveys were sent to ARS and AOS/ANS members, respectively. Of those, 157 surveys were returned (126 from ARS and 31 from AOS/ANS). Of those returning the survey, 72 (50%) had not performed ETBD and were excluded from subsequent analysis. Forty-four (66%) respondents consider ETBD after failure of medical management; conversely, 18 (27%) and 26 (39%) consider ETBD after failure of 1 or more trial of myringotomy tube placement. Routine testing for ETBD includes audiogram with tympanometry 64 (96%) and preoperative computer tomography (CT) 38 (57%). Fifty-three (80%) practitioners only perform ETBD in adults 18 years and older. Thirty-four (53%) respondents describe ETBD as "great" or "good," while 27 (42%) were unsure, and only 3 (5%) did not like ETBD.

CONCLUSIONS

Eustachian tube balloon dilation is a novel technique for the treatment of chronic ETD, and its role continues to evolve and develop. Current practice patterns demonstrate wide variability in the assessment of ETD, heterogeneity in the timing of ETBD, and controversy in preoperative CT screening.

[Diagnosis and treatment of Eustachian tube dysfunction]

The Eustachian tube protects against secretion, germs and sound pressure from the nasopharynx, it acts as a drain, and serves pressure equalization in both directions so that the ear drum and sound-conducting apparatus can vibrate optimally. The incidence of Eustachian tube dysfunction in adults is about 1%, in children almost 40%. Symptoms are often unspecific. For diagnosis, the Eustachian tube score (ETS-5) can be used in patients with a perforated ear drum, and the ETS-7 score in patients with intact ear drum. Adenoid hypertrophy is a frequent cause of obstructive tube dysfunction in children. Treatment of obstructive dysfunction includes steroid nasal sprays and regular performance of the Valsalva maneuver, as well as tube dilation with the Bielefelder balloon catheter. The patulous Eustachian tube is treated with saline nasal irrigation, estrogen-nasal ointment, and craniocervical manual therapy; causal treatments are evaluated.

Panel 2: Anatomy (Eustachian Tube, Middle Ear, and Mastoid-Anatomy, Physiology, Pathophysiology, and Pathogenesis)

Objective In this report, we review the recent literature (ie, past 4 years) to identify advances in our understanding of the middle ear-mastoid-eustachian tube system. We use this review to determine whether the short-term goals elaborated in the last report were achieved, and we propose updated goals to guide future otitis media research. Data Sources PubMed, Web of Science, Medline. Review Methods The panel topic was subdivided, and each contributor performed a literature search within the given time frame. The keywords searched included middle ear, eustachian tube, and mastoid for their intersection with anatomy, physiology, pathophysiology, and pathology. Preliminary reports from each panel member were consolidated and discussed when the panel met on June 11, 2015. At that meeting, the progress was evaluated and new short-term goals proposed. Conclusions Progress was made on 13 of the 20 short-term goals proposed in 2011. Significant advances were made in the characterization of middle ear gas exchange pathways, modeling eustachian tube function, and preliminary testing of treatments for eustachian tube dysfunction. Implications for Practice In the future, imaging technologies should be developed to noninvasively assess middle ear/eustachian tube structure and physiology with respect to their role in otitis media pathogenesis. The new data derived from these structure/function experiments should be integrated into computational models that can then be used to develop specific hypotheses concerning otitis media pathogenesis and persistence. Finally, rigorous studies on medical or surgical treatments for eustachian tube dysfunction should be undertaken.

Balloon Eustachian Tuboplasty in children

Endonasal ballon dilatation of the Eustachian tube (BET) is a promising treatment for Eustachian tube dysfunction with encouraging results over the last years in adults. In addition, in children, single studies demonstrated promising results, but revealed the necessity for broader and additional studies. Our retrospective analysis presents outcomes with BET in children with chronic obstructive dysfunction of the Eustachian tube, showing resistance to the conventional therapy after adenotomy with paracentesis or grommets (ventilation tubes). The data of 52 children, having undergone BET from April 2011 to April 2016, were retrospectively evaluated. Most children in our study presented middle ear effusion (47%), adhesive (21%), chronic otitis media (13%), or recurrent acute otitis media (11%). In 24 (37%) children, we combined BET with a paracentesis, in 5 (8%) patients with a tympanoplasty type I and in 3 (5%) patients with a type III. All children were assessed using an audiogram, tympanometry, and tubomanometry (50 mbar) before and after BET. In addition, we evaluated the results of the Lübecker questionnaire, which we performed before and after BET. The childrens' ear-related and quality of life-related symptoms, such as pressure equalization, ear pressure, hearing loss, pain and limitation in daily life, and satisfaction pre- and postoperatively, were analyzed. In the majority of patients, we could see an improvement in the ear pressure, hearing loss, limitation in daily life, and satisfaction with recurrent inflammations, underlined by better outcomes in the tubomanometry and the tympanogram. BET in children is a safe, efficient, and promising method to treat chronic tube dysfunction, especially as a second line treatment, when adenotomy, paracentesis, or grommets failed before.

Balloon Eustachian tuboplasty under local anesthesia: Is it feasible?

OBJECTIVE

To study whether balloon Eustachian tuboplasty (BET) is a feasible and safe procedure under local anesthesia.

STUDY DESIGN

Prospective multicenter case-control study.

METHODS

Patients undergoing either BET (n = 13) or endoscopic sinus surgery (ESS) (n = 12) under local anesthesia, with the possibility of sedation and analgesia, were monitored during the procedure and recovery period for possible adverse effects. After the procedure, the patients responded to a questionnaire assessing their experience.

RESULTS

No adverse effects were detected in the BET group. Patients in the BET group reported similar Visual Analog Scale scores for pain during the operation as the ESS group (5.0 ± 0.7 vs. 3.2 ± 0.7, mean ± standard error of the mean). However, patients in the BET group experienced more discomfort (4.2 ± 0.6 vs. 2.5 ± 0.3, respectively, P = 0.049). Seventy-seven and 92% of the patients in the BET and ESS groups, respectively, considered the anesthesia and pain relief to be sufficient. Patients from both the BET and ESS groups were almost devoid of pain 1 to 2 hours postoperatively (0.8 ± 0.2 and 1.4 ± 0.3, respectively). In total, 12 of 13 patients in the BET group, and all 12 patients in the ESS group, would choose local anesthesia with sedation and analgesia if they needed to undergo the same procedure again.

CONCLUSION

BET is a safe and feasible procedure under monitored anesthesia care, including local anesthesia along with sedation and analgesia. There is need for further methodological improvement to reduce pain and discomfort during the operation.

LEVEL OF EVIDENCE

4. Laryngoscope, 127:1021-1025, 2017.

Evidence and evidence gaps in the treatment of Eustachian tube dysfunction and otitis media

Evidence-based medicine is an approach to medical treatment intended to optimize patient-oriented decision-making on the basis of empirically proven effectiveness. For this purpose, a classification system has been established to categorize studies - and hence therapy options - in respect of associated evidence according to defined criteria. The Eustachian tube connects the nasopharynx with the middle ear cavity. Its key function is to ensure middle ear ventilation. Compromised ventilation results in inflammatory middle ear disorders. Numerous evidence-based therapy options are available for the treatment of impaired middle ear ventilation and otitis media, the main therapeutic approach being antibiotic treatment. More recent procedures such as balloon dilation of the Eustachian tube have also shown initial success but must undergo further evaluation with regard to evidence. There is, as yet, no evidence for some of the other long-established procedures. Owing to the multitude of variables, the classification of evidence levels for various treatment approaches calls for highly diversified assessment. Numerous evidence-based studies are therefore necessary in order to evaluate the evidence pertaining to existing and future therapy solutions for impaired middle ear ventilation and otitis media. If this need is addressed, a wealth of implications can be expected for therapeutic approaches in the years to come.

[Does balloon dilatation represent a breakthrough for Eustachian tube disorders – even in children?]

Balloon dilatation is a promising new treatment for Eustachian tube dysfunction which is becoming more and more popular in Germany. There are a number of single publications and even meta-analyses on this topic, which demonstrate good results but also reveal the need for better studies. Initially tube dilatation was applied only in adults with tube dysfunctions but recently some centers even recommend it for children with long-lasting or frequently recurring middle ear effusion, which is resistant to conventional therapy. This article provides a critical appraisal based on the current literature and emphasizes the need for controlled studies. Due to the poor definition of tube dysfunctions it may be difficult to establish informative studies but in terms of evidence-based medicine there is need for a precise definition of indications and inclusion criteria. Most important is that such studies must include control groups, which has so far not been the case. Moreover, there should be a consensus about the criteria for defining success. Although all publications claim that balloon tuboplasty is a safe method, the question whether or not preoperative computed tomography (CT) scans are needed should be considered in each individual case. Nevertheless, balloon dilatation is a very promising method offering a new approach to the problem of Eustachian tube dysfunction.

[Bacteriologic investigation of the Eustachian tube and the implications of perioperative antibiotics before balloon dilation]

BACKGROUND

Balloon Eustachian Tuboplasty (BET) is a new minimally invasive treatment for chronic Eustachian tube dysfunction (ETD). Initially, perioperative prophylactic antibiotic therapy with ciprofloxacin 2 × 500 mg p.o. for 5 days was administered. This study aimed to characterize the bacterial flora in the ET, nose, and pharynx in patients with chronic obstructive ETD. Additionally, we investigated the necessity of perioperative antibiotic prophylaxis in BET patients.

PATIENTS AND METHODS

We examined 40 patients undergoing BET: 20 patients with and 20 patients without perioperative antibiotic prophylaxis. All patients were followed-up for clinical signs and symptoms of local infection for at least 2 weeks after surgery. Following BET, the tips of 35 balloon catheters, as well as swabs from the nose and pharynx were sent for microbiologic analysis.

RESULTS

None of these 40 patients had postoperative signs of infection. Of the swabs of the balloon catheters, 46% were sterile and 23% showed standard flora. The remaining 31% of swaps revealed specific bacteria. However, none of the nasal or nasopharyngeal swaps were sterile.

CONCLUSION

Due to the lack of signs of postoperative infection in either investigated group, the authors no longer favor use of perioperative antibiotic prophylaxis in patients undergoing BET. The relevance of biofilms and pathogen colonization to ET function has recently been intensively discussed, and should be further investigated in future studies.

Balloon Eustachian Tuboplasty

Objective

A systematic review and meta-analysis of the evidence on balloon Eustachian tuboplasty (BET) as a treatment modality for Eustachian tube dysfunction (ETD). We followed the PRISMA guideline and registered with PROSPERO No. CRD42014009461.

Data Sources

We searched 12 databases including PubMed and Embase from January 1, 2010, to April 7, 2014, for studies of BET. Endpoints: change in symptoms, middle ear pathology, eardrum status, Eustachian tube function tests, hearing, adverse events, complications, and health-related quality of life.

Review Methods

Study quality was assessed using the modified Delphi technique quality appraisal tool for case series studies. Risk of bias was assessed using the Cochrane Collaboration’s tool for assessing risk of bias.

Results

Nine case series studies with 443 patients (642 tubes) were included. Population size n = 4 (7 tubes) to n = 210 (320 tubes). All studies were of poor quality and featured a high risk of bias. We found reduction of patient symptoms in ETD questionnaire ( P < .001), postoperative normalization of the tympanic membrane, conversion of type B or type C into type A tympanograms, reduced mucosal inflammation, increased number of positive Valsalva test and Swallowing tests, improvement in Eustachian tube score, reduction in Sino-Nasal Outcome Test (SNOT)-22 score ( P = .001), and increased quality of life ( P = .001). No serious adverse events were found.

Conclusion

The evidence of BET is poor and biased. No firm conclusions can be made to identify patients who will benefit from the procedure or to accurately predict surgical results. Randomized controlled trials or case-control trials are needed.

Treatment of middle ear ventilation disorders: sheep as animal model for stenting the human Eustachian tube--a cadaver study

Eustachian tube disorders can lead to chronic otitis media with consecutive conductive hearing loss. To improve treatment and to develop new types of implants such as stents, an adequate experimental animal model is required. As the middle ear of sheep is known to be comparable to the human middle ear, the dimensions of the Eustachian tube in two strains of sheep were investigated. The Eustachian tube and middle ear of half heads of heathland and blackface sheep were filled with silicone rubber, blended with barium sulfate to induce X-ray visibility. Images were taken by digital volume tomography. The tubes were segmented, and a three-dimensional model of every Eustachian tube was generated. The lengths, diameters and shapes were determined. Additionally, the feasibility of endoscopic stent implantation and fixation was tested in cadaver experiments. The length of the tube between ostium pharyngeum and the isthmus and the diameters were comparable to published values for the human tube. The tube was easily accessible through the nose, and then stents could be implanted and fixed at the isthmus. The sheep appears to be a promising model for testing new stent treatments for middle ear ventilation disorders.

Balloon Dilation of the Cartilaginous Portion of the Eustachian Tube

Objective

Studies of balloon Eustachian tuboplasty (BET) have shown encouraging results in small series with short follow-ups. Our pilot study suggested that patients with protracted otitis media with effusion (OME) or atelectasis of the tympanic membrane (TM) could benefit from BET.

Study Design

A prospective study where subjects act as their own controls. Patients from the pilot study and additional cases were enrolled in this cohort with long-term follow-up.

Setting

Regional Academic Center.

Subjects and Methods

Out of 80 patients who underwent BET, 41 consecutive Eustachian tube (ET) operations were included. Subjects’ inclusion criteria were OME and/or TM atelectasis, type B or C tympanograms, and inability to inflate their middle ears by Valsalva maneuver. All patients had longstanding ET dysfunction relieved only by repeated tympanostomies. Outcomes included ability to perform a Valsalva maneuver, audiometry, tympanometry, videoendoscopy of the ET with mucosal inflammation rating scores, and otomicroscopy.

Results

All cases were dilated successfully, without significant complications. Mean follow-up was 2.5 years (range, 1.5-4.2 years). Eighty percent (33/41) could do a Valsalva maneuver postoperatively; none of these ears required new tympanostomy tubes and subjective symptoms were relieved. Tympanometry results showed overall improvement. Nine patients had persistent perforations and 3 declined removal of the tube. Subjective symptoms were not relieved for 10% (4/41).

Conclusion

The results show that BET can effectively improve ET function in ears with OME or atelectasis. The procedure is well tolerated and without significant complications. The follow-up continues and we are investigating possible reasons for failures.