Sclerosis of the mastoid air cells as an indicator of undiagnosed otitis media in children with Down's syndrome

Barriers to timely tympanostomy tube placement in trisomy 21

OBJECTIVES

Trisomy 21 is the most common chromosomal abnormality in the United States with an incidence of 1 in 700 in live-born children. Children with trisomy 21 are at increased risk for chronic ear disease, as well as other medical issues that may complicate healthcare access. In this study, we investigate whether children with trisomy 21 experience delays in tympanostomy tube insertion, and if there are any factors that contribute to a delay in care.

METHODS

We performed a retrospective analysis on patients with trisomy 21 undergoing tympanostomy tube insertion at Boston Medical Center between 2005 and 2019 by analyzing the electronic medical record. This cohort was matched to patients without trisomy 21 by age, gender, surgery date and surgeon. The primary outcome was time elapsed between surgery decision date and date of tympanostomy tube insertion.

RESULTS

A total of 20 patients with trisomy 21 underwent tympanostomy tube insertion at Boston Medical Center between 2005 and 2019. The trisomy 21 cohort was matched to 39 patients in the general population. The average time elapsed from decision to undergo surgery to tympanostomy tube insertion was 43.1 days in the general population and 119.0 days in the trisomy 21 cohort (p < .01).

CONCLUSION

Patients with trisomy 21 experience greater delays in tympanostomy tube insertion than the general population, which may be due to the increased burden of comorbid conditions in people with trisomy 21.

Hearing loss in Down Syndrome revisited - 15 years later

OBJECTIVE

In 2001, the senior authors published a study investigating hearing loss in young children (ages 11 months to 3.8 years) with Down Syndrome (DS). We re-visit this same study population to review current audiologic status, the incidence of pressure equalization tube (PET) placement(s), and rate of tympanic membrane (TM) perforations. We aim to better understand the natural history of ear disease and hearing loss in DS and assess potential complications.

METHODS

This retrospective chart review included 57 children with DS who previously completed in 2006, a 5 year, longitudinal study investigating otolaryngologic problems in DS. Updated audiologic data was available for 54. Audiograms, age of ear specific testing, PET placement(s), and tympanic membrane(TM) descriptions were reviewed.

RESULTS

Ages ranged from 14 to 18 years (mean 16.34 years). PET placement occurred in 88.8%, with mean of 3.5 procedures. 30% of PET's were placed after age 6. Ear specific testing was obtained in 92.5% (mean age 4.54 years). Normal hearing was present in 44% (right ear) and 38% (left ear). "Functional" hearing levels, defined as normal or mild hearing loss and speech reception threshold ≤ 30 dB, occurred in 83.3%. Sensorineural/mixed hearing loss was present in 11% (right ear) and 9% (left ear). TM perforations rate was 17%. No cholesteatomas were found.

CONCLUSION

Chronic otitis media and indications for PET's persist as children with DS age. Although functional hearing occurred in 83.3%, there was an overall decrease in hearing levels as the children aged. Tympanic membrane perforations occurred in 17%. Continued surveillance of otologic and audiologic status in patients with Down syndrome is recommended.

A general review of the otolaryngologic manifestations of Down Syndrome

OBJECTIVE

Down Syndrome (DS) is the most common chromosome abnormality in liveborn children. Otolaryngologists frequently encounter these patients in their practice; in one survey, 50% of DS patients had been seen by Otolaryngology at least once. As such, it is essential that the practicing Otolaryngologist is aware of the otologic, rhinologic, and laryngologic manifestations of this complex disease and comfortable in the management and treatment of these unique patients. Our goal was to provide this information in a concise and definitive document.

METHODS

A comprehensive literature review using PubMed was completed. The terms "Otolaryngology", "Head and neck", "Ear, nose, throat", "Down Syndrome", and "Trisomy 21" were searched in various combinations. Applicable articles that discussed the Otolaryngologic manifestations of Down Syndrome were included.

RESULTS

In total, fifty articles were included for review. The Down Syndrome child tends to have smaller external ear canals, have higher rates of chronic ear disease, and may present with conductive, sensorineural, or mixed hearing loss. As such, DS patients should receive behaviouralaudiological testing every 6 monthsand annually after the age of three in addition to closer follow-up by an Otolaryngologist if tympanic membranes cannot be visualized or if the external auditory canals are significantly stenosed. Management should involve close follow-up and a low threshold for PE tube placement to reduce the risks for speech and language delay. Chronic rhinitis in the Down Syndrome patient is common. Retrognathia, hypotonia, and macroglossia can all cause obstructive sleep apnea (OSA) in this population and therefore each DS patient should get an overnight polysomnograph. Subglottic stenosis, vocal cord paralysis and laryngomalacia are not infrequently seen in the Down Syndrome patient. To reduce acquired subglottic stenosis, endotracheal tubes that are at least two sizes smaller than what is appropriate for the patient's age should be used.

CONCLUSION

Down Syndrome is common and there are many Otolaryngologic manifestations. We recommend that this patient population visit an Otolaryngologist on a regular basis and that the practicing Otolaryngologist is comfortable with the management and treatment of the unique challenges faced with these children.

Outcomes of tympanostomy tube placement in children with Down syndrome--a retrospective review

OBJECTIVES

Tympanostomy tubes are commonly used for treatment of chronic otitis media with effusion (COME) or recurrent acute otitis media (RAOM) in patients with Down syndrome, but hearing outcomes in this population have been mixed, and complications appear to be common. We aim to characterize outcomes and complications associated with tympanostomy tube placement in this population.

METHODS

Retrospective review. All patients with Down syndrome presenting to a tertiary academic pediatric otolaryngology practice over a ten year period from 2002 to 2012 who received tympanostomy tubes for COME, RAOM, or hearing loss were reviewed.

RESULTS

Long term follow up data was obtained in 102 patients, with average follow up 4.7 years. COME was the primary indication for tube placement in 100/102 (98%). Less than half of these patients (44%) initially failed their newborn hearing screen. Post operative hearing was found to be normal or near normal for the better hearing ear in 85/99 (85.9%), and normal to near normal in bilateral ears in 71/99 (71%). A majority (63.7%) of patients required two or more sets of tubes during the follow up period. Long term complications were common and were significantly increased if the patient required three or more sets of tubes, including chronic perforation (36.6% vs 8.2%, p<0.001), atelectasis (29.3% vs 1.6%, p<0.0001), and cholesteatoma (14.6% vs 0%, p=0.003).

CONCLUSIONS

COME is a frequent problem in Down syndrome, and the majority of patients will require two or more sets of tubes during their childhood and achieve normal postoperative hearing. Long term complications of otitis media appear to be more common in this population and appear to correlate with increasing number of tubes placed. More investigation is required to determine optimal treatment strategies for COME in patients with Down syndrome.

Surveying the Down syndrome mouse model resource identifies critical regions responsible for chronic otitis media

Chronic otitis media (OM) is common in Down syndrome (DS), but underlying aetiology is unclear. We analysed the entire available mouse resource of partial trisomy models of DS looking for histological evidence of chronic middle-ear inflammation. We found a highly penetrant OM in the Dp(16)1Yey mouse, which carries a complete trisomy of MMU16. No OM was found in the Dp(17)1Yey mouse or the Dp(10)1Yey mouse, suggesting disease loci are located only on MMU16. The Ts1Cje, Ts1RhR, Ts2Yah, and Ts65Dn trisomies and the transchomosomic Tc1 mouse did not develop OM. On the basis of these findings, we propose a two-locus model for chronic middle-ear inflammation in DS, based upon epistasis of the regions of HSA21 not in trisomy in the Tc1 mouse. We also conclude that environmental factors likely play an important role in disease onset.

The Promise of Service Learning in a Pediatric Audiology Course on Clinical Training With the Pediatric Population

Purpose

This study investigated the effectiveness of service learning (SL) and its impact on students’ clinical competency, interest in pediatric audiology as a career, and levels of community engagement, as well as its impact on the community.

Method

Forty-eight students enrolled in an SL pediatric audiology course providing hearing and middle ear testing to 292 children, ages 6 months to 5 years. Another 10 non-SL students served as a control group. SL surveys were administered to students before and after the SL experience and post hoc to the non-SL group to assess their perceived readiness for evaluating children and their interest in pediatric audiology. Parents and community partner staff members completed another survey to provide feedback about their experience with the SL activity.

Results

The students’ ratings were higher post-SL than pre-SL, and their learning gain was positively ranked post-SL compared with the non-SL group. Also, 71% of the SL students expressed positive interest in pediatric audiology post-SL compared with 37% of the non-SL group. Responses from community partners were also positive.

Conclusions

Embedding SL into a pediatric audiology course increased student interest in pediatric audiology as a career and enhanced readiness to evaluate young children.

Down syndrome: Common otolaryngologic manifestations

Otolaryngologic or ear, nose, and throat (ENT) problems are common in children with Down Syndrome (DS). This includes problems with chronic ear infections and chronic middle ear effusions with associated hearing loss, airway obstruction, and sleep apnea, as well as problems with chronic rhinitis and sinusitis. In addition, many of these ENT problems require surgical interventions, and there are special anesthesia considerations that need to be addressed in children with DS. These include subglottic stenosis, post-operative airway obstruction, and cervical spine concerns. As the care of children with DS has become more consistent and proactive, outcomes from the treatment of these ENT manifestations have improved. Aggressive interventions, both medical and surgical, have led to a decreased incidence of hearing loss, good control of the chronic rhinitis, and a better awareness of the incidence of sleep apnea and sleep-disordered breathing in individuals with DS. These common otolaryngologic manifestations of DS are reviewed with recommendations for ongoing care and monitoring.

ENT and speech disorders in children with Down's syndrome: an overview of pathophysiology, clinical features, treatments, and current management

Down's syndrome is the most commonly occurring genetic abnormality, involving about 1 in 600 births. The increasing life expectancy of individuals with Down's syndrome has revealed the presence of several unexpected pathological processes. Among these, ENT disorders hold an important place because of their high incidence and severity. Accurate knowledge of the pathophysiology underlying ENT disorders (facial dysmorphism, ear abnormalities, upper airway abnormalities, and immunodeficiency) allow an understanding of the reasons for the development of the upper airway obstruction, obstructive sleep apnea syndrome, subglottic stenosis, deafness, speech delay, and ENT infections that occur frequently in these children. Early screening and specific treatment may allow some of the long-term sequelae to be avoided, or at least their prognosis to be improved. In order to help health care professionals in their daily practice, this review makes a series of recommendations to allow them to develop a master plan for the ENT management of children with Down's syndrome. In children with Down's syndrome, ENT disorders occur frequently and are often severe. They develop owing to craniofacial, functional, and immune system abnormalities. Early screening and treatment allow improvements in long-term outcomes.

Hearing loss in children with Down syndrome

OBJECTIVE

Previous studies report a 38-78% incidence of hearing loss in children with Down syndrome (DS). The purpose of this study was to establish more up to date information about hearing loss in children with DS.

METHODS

A 5-year longitudinal study following the otolaryngologic problems seen in children with DS was initiated in February, 1999 at the Children's Hospital Medical Center in Cincinnati, OH. Aggressive, 'state of the art' treatment, both medical and surgical, was provided to a group of children, (n=48), all of whom were entered into the study at an age under 2 years. Specific interventions and treatments were reviewed in regards to following and treating the children's chronic ear disease. Hearing level results at the end of the first year of the study were evaluated in this publication. This includes both pre-treatment and post-treatment audiologic results.

RESULTS

After treatment of easily reversible hearing loss from chronic otitis media, either with medical or surgical treatment with PET's, 98% of the children had normal hearing levels. Only two children had residual mild hearing losses after treatment interventions.

CONCLUSION

Aggressive, meticulous and compulsive diagnosis and treatment of chronic ear disease in children with DS, started soon after birth, provides significantly improved hearing levels than reported previously.

Ear and hearing in relation to genotype and growth in Turner syndrome

Hearing loss, auricular anomalies and middle ear infections are common findings in many genetic disorders, but the mechanisms have remained unknown. We studied ear and hearing problems in Turner's syndrome (TS) in relation to the degree of X chromosome loss (i.e. degree of mosaicism) and growth. One hundred and nineteen girls and women with TS were studied regarding audiometry, fluorescent in situ hybridisation, serum concentration of insulin-like growth factor-1 (IGF-1) and body height. It was found that sensorineural hearing loss and occurrence of auricular anomalies were significantly increased the greater the proportion of 45,X cells in a particular individual (P<0.05 and P<0.001, respectively). Middle ear infections and sensorineural hearing loss were negatively correlated with IGF-1 (P<0.05 and P<0.001, respectively). Hearing correlated positively with height (P<0.01) and IGF-1 independently of age (P<0.05). Height correlated positively with IGF-1 (P<0.001). Auricular malformations, middle ear infections and hearing impairment in TS were interpreted as due to growth disturbances during development. A new hypothesis on the pathophysiology of external, middle and inner ear disorders due to a delayed cell cycle caused by chromosomal aberrations per se and not only to the specific X chromosome deletion is presented.

Down syndrome: imaging of multiorgan involvement

Down syndrome (trisomy 21) has many manifestations that affect multiple organ systems, and we describe the wide array of imaging findings. Common cardiovascular and gastrointestinal entities are congenital heart disease (atrioventricular canal), bowel atresias (duodenal and anal), and Hirschsprungs disease. Children with Down syndrome have an 18-20 fold increased incidence of leukemia. Pulmonary hypoplasia, lung cysts, and pig bronchus (origin of the right upper lobe bronchus from the trachea) have been described. Neurologic findings include mineralizing vasculopathy of the basal ganglia, Moyamoya disease, and cerebellar/vermian hypoplasia. Musculoskeletal manifestations are numerous and include eleven ribs, hypersegmented sternum, abnormal pelvis, joint laxity/dislocations, and DDH (developmental dysplasia of the hip). Of special importance is the "triple jeopardy" of the upper cervical spine (atlanoaxial subluxation, hypoplastic posterior arch of C1, and atlantooccipital instability) and the resulting controversial cervical spine radiographic screening of children with Down syndrome. Knowledge of the many anomalies associated with Down syndrome can aid the clinician, not only in diagnosing abnormalities in these patients, but also in counseling families for potential problems that can occur in these children.