The etiology and clinical course of bullous myringitis

Acute Otitis Media

A typical case of acute otitis media in a pediatric patient is presented. The pathophysiology of the disorder, as well as its incidence, etiology, complications, and sequelae are discussed. Past treatment methods and current therapeutic recommendations pertaining to antibiotics and other adjuncts are included.

Diagnosis and management of acute otitis media

This evidence-based clinical practice guideline provides recommendations to primary care clinicians for the management of children from 2 months through 12 years of age with uncomplicated acute otitis media (AOM). The American Academy of Pediatrics and American Academy of Family Physicians convened a committee composed of primary care physicians and experts in the fields of otolaryngology, epidemiology, and infectious disease. The subcommittee partnered with the Agency for Healthcare Research and Quality and the Southern California Evidence-Based Practice Center to develop a comprehensive review of the evidence-based literature related to AOM. The resulting evidence report and other sources of data were used to formulate the practice guideline recommendations. The focus of this practice guideline is the appropriate diagnosis and initial treatment of a child presenting with AOM. The guideline provides a specific definition of AOM. It addresses pain management, initial observation versus antibacterial treatment, appropriate choices of antibacterials, and preventive measures. Decisions were made based on a systematic grading of the quality of evidence and strength of recommendations, as well as expert consensus when definitive data were not available. The practice guideline underwent comprehensive peer review before formal approval by the partnering organizations. This clinical practice guideline is not intended as a sole source of guidance in the management of children with AOM. Rather, it is intended to assist primary care clinicians by providing a framework for clinical decision-making. It is not intended to replace clinical judgment or establish a protocol for all children with this condition. These recommendations may not provide the only appropriate approach to the management of this problem.

No evidence of Mycoplasma pneumoniae in acute myringitis

Our aim was to discover Mycoplasma pneumoniae in bullous and hemorrhagic myringitis in children <2 years of age. Middle ear fluid samples (n = 37) and samples taken from the blisters of the tympanic membranes (n = 12) studied by polymerase chain reaction for M. pneumoniae were negative. This study does not support an important role for M. pneumoniae as an etiologic agent in acute myringitis.

Vestibular involvement in myringitis bullosa

OBJECTIVE

Cochlear involvement manifested by sensorineural or mixed-type hearing loss (HL) has been reported to occur in 30-67% of patients suffering from myringitis bullosa (MB). The goal of this study was to investigate the incidence and nature of vestibular involvement in MB.

MATERIAL AND METHODS

All adult patients presenting to Hadassah University Hospital with MB between 2000 and 2002 were evaluated for inner ear involvement. Audiometry, tympanometry and electronystagmography (ENG) were performed within the first 48 h after presentation. The affected ears were examined on a regular basis and audiometric studies were repeated every other day. ENG was not repeated but a detailed questionnaire was administered and a thorough physical examination performed to rule out persistent vestibular dysfunction.

RESULTS

Thirteen patients (17 ears) were diagnosed as suffering from MB. All 13 patients reported HL in the affected ears and 7 (54%) reported a sensation of vertigo at presentation. Audiometric tests revealed HL in all 17 affected ears: sensorineural HL in 2, mixed-type HL in 12 and conductive HL in 3. ENG was normal in only two cases, both of whom did not suffer from vertigo. Four patients with no vestibular symptoms whatsoever had an abnormal electronystagmogram. All seven patients who complained of vertigo had an abnormal electronystagmogram and recovered fully after treatment. All but two patients recovered their auditory function.

CONCLUSIONS

Not only is the cochlear part of the inner ear affected in patients suffering from MB, but the vestibular part as well. Sensorineural HL and vestibular abnormalities should both be considered as manifestations of MB.

Bullous myringitis: a case-control study

Prior studies have shown that bullous myringitis (BM) accounts for <10% of acute otitis media (AOM) cases, and that the distribution of viral and bacterial pathogens in BM is similar to that in AOM without BM, except for a relative increase in the proportion of Streptococcus pneumoniae in BM. We studied 518 cases of AOM in children aged 6 months to 12 years. Using tele-otoscopy to assist the diagnosis, we identified 41 cases (7.9%) with BM. Children who had AOM with BM were older than AOM patients without BM (median age: 4.3 years vs 18 months). We compared 41 cases of AOM with BM to 41 control cases of age-, race-, and gender-matched AOM patients without BM. When compared with this matched control group, children with BM had more severe symptoms at the time of diagnosis and were more likely to have bulging of the tympanic membrane in the quadrants that were not obscured by the bulla. Children with AOM and BM may require aggressive pain management. Although parents and clinicians may agree that a watchful waiting approach is appropriate for older children with mild AOM, children experiencing painful AOM with BM may not be successful candidates for a watchful-waiting approach, because parents may resist postponement of antibiotic therapy in children who are more symptomatic.

The symptoms and clinical course of acute bullous myringitis in children less than two years of age

OBJECTIVE

the most characteristic symptom of acute bullous myringitis (inflammation of the tympanic membrane) is a sudden onset of severe ear pain. However, in infants and young children a precise symptom history is more difficult to obtain and the symptoms may be less specific. Our objective was to determine the occurrence of different symptoms, signs and the recovery of symptoms during the course of acute bullous myringitis in children less than 2 years. We also evaluated whether there were any specific features in bullous myringitis in comparison with acute otitis media (AOM).

METHODS

2028 children (aged 7-24 months) at primary care level in a prospective longitudinal cohort study in the Finnish Otitis Media Vaccine Trial.

RESULTS

during the follow-up there were 86 office visits with bullous myringitis in 92 ears and 1876 office visits with acute otitis media in 2683 ears. Middle ear fluid developed in 97% of cases of bullous myringitis during the course of disease. Earache was present in 58% and fever (>or=38 degrees C) in 62% of cases of bullous myringitis. The symptoms of upper respiratory tract infection (rhinitis in 93% and cough in 73% of events) were present in a majority of cases. Earache, fever, rubbing of the ear, restless sleeping, excessive crying and poor appetite were present more often in bullous myringitis than in acute otitis media. The symptoms were relieved in 1-2 days in a majority of cases. There were no recognized cases of bullous myringitis in ears with patent tympanostomy tubes.

CONCLUSIONS

acute bullous myringitis in children represents a special form of AOM with more severe symptoms. Earache and fever were more common in bullous myringitis than in AOM. However, the condition resolved rapidly and the short-term outcome was good.

Evaluation of the role of respiratory viruses in acute myringitis in children less than two years of age

BACKGROUND

The etiology of acute myringitis remains controversial although it is usually encountered in connection with acute otitis media (AOM). In most cases of acute myringitis a bacterial pathogen has been detected in the middle ear fluid, but the role of respiratory viruses has remained unclear. Our objective was to investigate the etiologic role of viruses in the pathogenesis of acute bullous and hemorrhagic myringitis in children <2 years of age.

METHODS

A prospective longitudinal cohort study of 2028 children ages 7 to 24 months in primary care in the Finnish Otitis Media Vaccine Trial. Nasopharyngeal aspirate (NPA) and middle ear fluid (MEF) samples taken at the time of the diagnosis were examined by a time-resolved fluoroimmunoassay for antigen detection of adenoviruses; influenza viruses A and B; parainfluenza viruses 1, 2 and 3; and respiratory syncytial virus and by reverse transcription polymerase chain reaction for human rhinovirus and human enterovirus.

RESULTS

Eighty-two children with bullous myringitis and 37 children with hemorrhagic myringitis were diagnosed during the 18-month follow-up period. In bullous myringitis a respiratory virus was detected in 70% of NPA samples and in 27% of MEF samples. In hemorrhagic myringitis 57% of NPA samples and 28% of MEF samples were virus-positive. The viral distribution was similar to that of AOM (virus positive 64% of NPA and 37% of MEF).

CONCLUSIONS

We could not confirm any specific respiratory virus to be the etiologic agent in acute myringitis. The etiology of acute myringitis is similar to that of AOM in children <2 years of age.

Bacterial etiology of acute myringitis in children less than two years of age

BACKGROUND

Acute myringitis is an inflammation of the tympanic membrane that occurs alone or in association with external otitis or otitis media. The two clinical entities, based on physical examination, are bullous myringitis and hemorrhagic myringitis.

OBJECTIVES

To investigate the association of concomitant middle ear disease with acute myringitis and to analyze the bacteriologic findings of the middle ear fluid in children with acute myringitis.

METHODS

A prospective longitudinal cohort study of 2028 children age 7 to 24 months at primary care level in the Finnish Otitis Media Vaccine Trial. Matched case-control design for analysis of bacterial pathogen distribution.

RESULTS

There were 82 children in whom 92 ears were diagnosed with acute bullous myringitis and 37 children in whom 40 ears were diagnosed with hemorrhagic myringitis during the follow-up. Middle ear disease was associated with bullous myringitis in 97% of ears and with hemorrhagic myringitis in 82% of ears. Bacterial pathogen distribution was similar to that of acute otitis media, although a higher proportion of Streptococcus pneumoniae was detected in both bullous and hemorrhagic acute myringitis.

CONCLUSIONS

Middle ear fluid was present in vast majority of ears with acute myringitis in young children. The same etiologic bacteria were found in acute myringitis as in acute otitis media, but S. pneumoniae was the major pathogen. Acute bullous myringitis should be treated as acute otitis media in children <2 years of age.

Clinical features of acute otitis media among children

The anamnestic and clinical data on all of the 2254 attacks of acute otitis media (AOM) registered among 14200 children (less than 16 years) at risk during a one-year period were analysed. On the basis of otoscopic findings AOM was classified into three grades: 25.0% of the cases were considered mild, 39.0% moderate and 36.0% severe. Spontaneous perforation was found in 4.6% of the cases. 76.2% of the attacks were preceded by a respiratory infection, but only 1.4% were sequelae of some epidemic childhood disease. Earache was present in 73.5% of the attacks; in 81.0% of these it had lasted less than 24 hours. 39.4% of all the attacks were bilateral; during the first 2 years of life the proportion was 53.7%, decreasing thereafter with increasing age, and being only 18.7% among those 10-15 years old. In unilateral attacks the right ear was affected slightly, but not significantly, more often.

Bullous myringitis with sensorineural hearing loss

Bullous myringitis is manifested by moderately severe otalgia associated with vesicles on the tympanic membrane and medial external auditory canal wall. This disease occurs mainly in young adults, most commonly in winter, and is usually preceded or accompanied by an upper respiratory infection. A reversible sensorineural loss developed in three of 22 patients. Complement fixation antibody studies performed on ten patients failed to implicate Mycoplasma pneumoniae, influenza virus types A or B, or adenovirus as the causal agent.