OBJECTIVES: This paper aims to determine the length of time before a cochlear implantee would reach aided hearing threshold of < 45 dBHL at 5 frequencies (target threshold) and whether there is a difference depending on age of implantation and sex.
METHODS: From January 2009 to February 2011, the aided earing thresholds of 41 prelingually deaf children with cochlear implants after switch on were reviewed.
RESULTS: There were 21 males and 20 females. Majority of children 7 years old reached it at < 1 month. The probability that a female would reach the target threshold on or before 6 months was 90% but this was not statistically significant.
CONCLUSION: Sixty-six percent of the children with cochlear nplants reached the target threshold within the first 3 months post fitting and 80% within the first 6 months post fitting. More of the older children reached target threshold earlier than the younger children. There was a trend that more females reached the target threshold earlier than the males but this was not statistically significant.

Human ; Male ; Female ; Child ; Child Preschool ; Infant ; Infant Newborn ; Cochlear Implants ; Cochlear Implantation ; Hearing Aids ; Cochlea

Objective: To compare the results of auditory steady-state response (ASSR) and click auditory brainstem response (click ABR) among infants and young children tested at the Ear Unit of a Tertiary General Hospital. Methods: Design: Cross-sectional Study Setting: Tertiary General Hospital Population: Within-subject comparisons of click auditory brainstem response (click ABR) thresholds and auditory steady-state response (ASSR) thresholds among 55 infants and young children, 2 months to 35 months of age referred to the Ear Unit for electrophysiologic hearing assessment. Results: Click ABR showed strong positive correlation to all frequencies and averages of ASSR. Highest correlation was noted with the average of 1-4 kHz ASSR results with Pearson r = 0.89 (Spearman r=0.80), the average of 2-4 kHz had strong positive correlation r = 0.88 (0.79). Correlation was consistently strong through all ASSR frequencies (0.5 kHz at r=0.86 (0.74), 1 kHz at r=0.88 (0.78), 2 kHz at r=0. 87 (0.79), 4 kHz at r=0.85 (0.76)). Average differences of click ABR and ASSR thresholds were 8.2±12.9dB at 0.5 kHz, 8.6±12.6dB at 1 kHz, 5.3±11.8dB at 2 kHz and 7.8±13.4dB at 4 kHz. Among patients with no demonstrable waveforms by click ABR with maximal click stimulus, a large percentage presented with ASSR thresholds. Of these, 80.5% (33 of 41) had measurable results at 0.5 kHz with an average of 107.3±11.1dB, 85.4% (35 of 41) at 1 kHz with an average of 110.5±11.8dB, 73.2% (30 of 41) at 2 kHz with an average of 111.2±11.1dB and 63.4% (26 of 41) at 4 kHz with average of 112.2±8.21dB. Auditory steady-state response results were comparable to auditory brainstem response results in normal to severe hearing loss and provided additional information necessary for complete audiologic assessment especially among patients with severe to profound hearing loss wherein click ABR showed no responses. Up to 85.4% of patients that would have been noted to have no waveforms by click ABR still demonstrated measurable thresholds by ASSR. Conclusion: Our study suggests that ASSR may be the best available tool for assessing children with severe to profound hearing loss, and is a comparably effective tool in overall hearing assessment for patients requiring electrophysiological testing. The advantages of ASSR over click ABR include: 1) detection of frequency-specific thresholds and; 2) the detection of hearing loss thresholds beyond the limits of click ABR.

Objective:To report a case of fractured tracheotomy tube ingestion in a pediatric patient, discussing the clinical presentation, complications and management of tracheobronchial tree versus upper digestive tract foreign bodies. Methods: Design: Case Report Setting: Tertiary Private Hospital Patient: One Result: A 4-year-old male child with unusual hypersensitivity to routine tracheotomy suctioning was discovered to have a fractured tracheotomy tube. Emergency radiographs localized the cannula in the abdomen and bronchoscopy was deferred. The foreign body was eventually passed out after four days. Conclusion: Due diligence in diagnostics prior to bronchoscopy led to the avoidance of an unnecessary and sometimes complicated procedure. In developing countries with poor access to health care, the importance of regular tracheotomy follow-ups and periodic replacement cannot be overemphasized. A search of the English literature using Pubmed and Ovid search engines with keywords tracheostomy, foreign bodies and pediatrics confirms that this is the first reported accidental ingestion of a fractured tracheotomy tube in a pediatric patient.

Background: Certain indigenous populations have been noted by the World Health Organization (WHO) to havethe highest prevalence ratesforchronicsuppurativeotitis media (CSOM), including the Australian Aborigines (28-43%), Greenlanders (2-10%) and Alaskan Eskimos (2-10%). Objectives: To determine the prevalence of common ear problems, particularly CSOM, among the indigenous Ati or Aeta community in Bolabog, Boracay, and to determine their hearing sensitivity using screening audiometry. Methods: Study Design - Descriptive cross-sectional study. Setting - A small Ati community in Bolabog, Boracay. Population - A total of 63 adults and children underwent medical interview and otoscopy. Additionally 24 had their hearing screened by audiometry. Results: About a quarter of the population participated in the study, including 41 children (40 percent of all children) and 22 adults (18 percent of all adults). Forty-six percent of children and 23 percent of adults who were examined had previous history of ear discharge, while 22 percent of children and 45 percent of adults who were examined had history of hearing loss. Seventeen percent of children had history of hearing loss in the family. CSOM was found in 18 (43.90 percent) children and 8 (36.36 percent) adults. Impacted cerumen was found in 17.1 percent of children. Eleven female children underwent screening audiometry. Of these, eight had normal hearing and three had abnormal findings. Thirteen adults were also tested, five of whom were male and had normal hearing bilaterally. Four of eight female adults had abnormal hearing, of which three were unilateral. Conclusions: The Ati population in Bolabog, Boracay belongs to a group with the highest prevalence rates for CSOM (27.0 percent). A bigger sample for screening audiometry is required for proper estimation of hearing loss prevalence. Both environmental and genetic factors may have increased the prevalence of CSOM in the Ati population of Boracay. (Author)
HEARING LOSS OTITIS MEDIA OTITIS MEDIA ; SUPPURATIVE

Objective. The purpose of this study is to identify the incidence rate of 'refer' result in neonates born to diabetic mothers and to determine the association of maternal diabetes and the initial 'refer' result. Methods. This was a retrospective cross-sectional study which included neonates who had hearing screening test using transient-evoked otoacoustic emissions test (TEOAE) on both ears at the Philippine General Hospital Ear unit during three weeks. We obtained the demographic characteristics, presence/absence of maternal diabetes, and OAE results. Results. Among the 150 neonates, ten were born to diabetic mothers, with an age range of 2-8 days old. Forty percent of neonates of diabetic mothers had an initial 'refer' result compared with 7.9% of nondiabetic mothers' neonates. After logistic regression analysis, there is a significant association between maternal diabetes and initial 'refer' result in OAE with a p-value <0.05. If the mother is diagnosed with diabetes (gestational/pre-gestational), the odds of having an initial 'refer' result in the hearing screening is 2x higher. The odds can range from 2-43 times. Conclusion. The incidence rate of an initial 'refer' result in neonates of diabetic mothers is 40%. There is a significant association between maternal diabetes and the initial 'refer' result in the OAE test.
Infant, Newborn ; Humans ; Mothers ; Diabetes, Gestational ; Hearing Loss ; Mass Screening ; Risk Factors ; Hearing

OBJECTIVE: To explore the effects of pesticide exposure on the auditory system, specifically on hearing status based on auditory brainstem responses.

METHODS: A cohort of pregnant women was identified in several communities in a rural area from April 2002 to February 2003 and followed up until delivery. Mother-infant dyads were assessed for exposure to pesticides. Maternal and fetal exposures to environmental toxic products were determined by measuring levels in maternal hair and blood, and infant cord blood, hair, and meconium, respectively. Hearing status was measured using otoacoustic emissions (OAE) and confirmed by diagnostic auditory brainstem responses (ABR) measured at 80, 60, and 40 decibels. Waves I, III, V were identified and absolute latencies measured, including inter-peak latencies from waves 11III, I-V, and III-V. Pesticide exposure was then correlated with latencies of Waves I, III, V, and interpeak latencies of waves I-III, IIV, and III-V. Hearing loss and pesticide exposures were correlated with Griffiths Mental Development Scores (GMDS).

RESULTS: Significant delays in the ABR wave latencies were noted in the group with exposure to pesticides. Propoxur was the most common toxic product detected in infants and meconium the best substrate for its detection. There was a 1.4% risk of hearing loss with exposure to propoxur (RR=0.52 (0.12-2.30), p = 0.06), a 6.25% risk with cypermethrin exposure (RR= 4.53 (0.61133.64), P = 0.10) and 6.25% risk with pretilachlor exposure (3.13 (0.44-22.30), p = 0.07). Griffith's Mental Developmental Scale scores (GMDS- hearing and speech subscale and general quotient scores) were not significantly different between exposed and unexposed groups. However, three infants with positive exposures and hearing loss had below average, or low to average scores using this scale.

CONCLUSION: Maternal exposure to environmental toxic products may affect the auditory pathway in infants at birth. Pregnant women should limit their exposure to such toxic products in order to avoid neurodevelopmental effects particularly on hearing because this is very important in the critical stage of language and speech development.

Human ; Male ; Female ; Infant Newborn ; Auditory Pathways ; Maternal Exposure ; Meconium ; Speech ; Otoacoustic Emissions, Spontaneous ; Hearing Loss ; Deafness ; Hearing Tests ; Acetanilides ; Pesticides ; Hair

Background: The Philippine National Ear Institute (PNEI) was created to promote health of hearing and balance among Filipinos. Over the years, it has provided audiologic services to thousands of patients annually and has published relevant hearing and balance research. Objective: To describe the patients served by the PNEI in terms of age, region of origin, occupation, pretest diagnosis, and audiologic results. Methods: Study Design - Cross-sectional study Setting - National tertiary care center Population - All records of patients referred for audiologic testing at PNEI in 2006 were reviewed and encoded into analyzable format. Results: A total of 1,756 patients had audiologic records for review. Median age was 32.5 years, with the age distribution presented according to sex, type of tests done including common reasons for referral, and median threshold levels by frequency. Coverage was national in scope, with most patients coming from the National Capital Region and from Regions III and IVa. Occupation was indicated in 37.8 percent of the working age group, most of whom were unemployed. The most common pretest diagnosis was chronic otitis media (26.6 percent), followed by hearing loss of unknown etiology (13.0 percent) and tinnitus (9.3 percent). Severity of hearing impairment based on pure tone audiometry was variable, and was presented according to common diagnoses. About 39 percent of hearing impairment cases were sensorineural, 36 percent conductive and 25 percent due to mixed defect. Bilateral Type A ears were found in 45.4 percent of patients by tympanometry, while 29.3 percent were bilateral Type B. For otoacoustic emissions, 69.0 percent were labeled as "refer" in at least one ear. Conclusion: The PNEI is a major national referral center for audiology that holds much promise in developing programs for national surveillance of the hearing status of different sectors in Philippine society. (Author)
HEARING AUDIOLOGY ACOUSTIC IMPEDANCE TESTS OTITIS MEDIA

OBJECTIVES: This study aims to determine the maternal reactions and emotions towards an initial "refer" result in the newborn hearing screening test and to determine the proportion of mothers who fully comprehended the test results of the newborn hearing screening test.
METHODS: In this study, mothers of newborns with a "refer" result in the Universal Newborn Hearing Screening (UNHS) are given questionnaires which cover their understanding of the hearing screening test, the emotions they felt and attitude towards the results.
RESULTS: Our findings showed that the UNHS program protocol was properly understood by almost all the respondent mothers. Of the emotions listed from the questionnaire, being "worried" was the most persistently felt emotion.
CONCLUSION: It is important that the results of the newborn hearing screening test be properly understood by the mothers. Mothers who experienced negative emotions brought about by the hearing screening test still believed that the newborn hearing screening test was important, were glad that their child underwent the newborn hearing screening test and will request it for their future offspring.

Anxiety