Publications by authors named "Marisa Frasson de Azevedo"
Background: This study examined the relationship between behavioural thresholds as measured by pure tone audiometry and electrophysiological thresholds measured by the Auditory Steady-State Response (ASSR) in children with normal hearing and sensorineural hearing loss.
Materials And Methods: After being assessed, 45 children of both sexes, ranging in age from 5 to 15, were split into four groups: 10 with moderate to moderately severe sensorineural hearing loss (G2M); 10 with steeply sloping sensorineural hearing loss (G2D); 10 with profound and severe sensorineural hearing loss (G2S); and 15 with normal hearing (G1). ASSR, tympanometry, acoustic reflex testing, pure tone audiometry, and speech audiometry (SRT and SDT) were performed.
Purpose: to determine the functioning of the efferent auditory system in premature newborns with intraventricular hemorrhage.
Method: the sample consisted of 44 newborns, divided into two groups. The study group was composed of 22 premature newborns with intraventricular hemorrhage/and the control group was composed of 22 newborns without intraventricular hemorrhage, matched to the study group for gestational age, correct gestational age and sex.
Purpose: This study aimed to identify whether the development of hearing abilities in the first year of life is related to the development of language in preterm neonates with chronological age between 18 and 36 months, verifying if the language performance varies according to the weight/gestational age ratio.
Methods: Retrospective and longitudinal study approved by the Institution's Ethics Committee. The sample consisted of 66 preterm infants of both sexes, aged 18-36 months, divided into two groups: AIG Group 39 neonates with weight appropriate to the gestational age, 26 with normal hearing and 13 with altered hearing; and PIG group 27 neonates small for gestational age, 18 with normal and 9 with altered hearing.
The mismatch negativity (MMN) is a negative long-latency auditory potential elicited by any discriminable change in a repetitive aspect of auditory stimulation. This evoked potential can provide cortical information about the sound processing, including in children who use cochlear implants. To identify MMN characteristics regarding latency, amplitude, and wave area in cochlear implanted children and to identify associations among language development, speech perception and family involvement.
View Article and Find Full Text PDFObjectives: To characterize the audiometric evaluation and acoustic immittance measures in different types of mucopolysaccharidosis.
Method: Fifty-three mucopolysaccharidosis patients were evaluated. The classification consisted of type I (Hurler syndrome, Hurler-Scheie and Scheie syndrome), type II (Hunter syndrome), type III (Sanfilippo syndrome), type IV (Morquio syndrome), and type VI (Maroteaux-Lamy syndrome).
Purpose: To verify the auditory processing abilities and occurrence of the suppression effect of Otoacoustic Emissions (OAE) in individuals who stutter.
Methods: The study sample comprised 15 adult individuals who stutter, aged 18-40 years, with stuttering severity ranging from mild to severe, paired according to gender, age, and schooling with individuals without speech complaint or disorder. All participants underwent conventional clinical evaluation, specific stuttering assessment, and basic (audiometry, imitanciometry, and measurement of acoustic reflexes) and specific (auditory processing evaluation and measurement of suppression effect of OAEs) audiological assessments.
Purpose: This research aims at verifying the occurrence and magnitude of suppression effect of otoacoustic emissions evoked by transient stimulus in term and preterm infants, setting a benchmark for clinical use.
Methods: The study sample consisted of 40 infants, with a rage of age from five days to four months, without any risk indicators for hearing loss and otoacoustic emissions present at birth: the 20 term and 20 preterm infants spent more than five days in the Neonatal Intensive Care Unit. Linear click was presented at 65 dB Sound Pressure Level, in blocks of 15 seconds without noise, and with contralateral noise at 60 dB Sound Pressure Level.
Introduction: Mucopolysaccharidosis (MPS) is a lysosomal storage disease caused by deficiency of α-l-iduronidase. The otolaryngological findings include hearing loss, otorrhea, recurrent otitis, hypertrophy of tonsils and adenoid, recurrent rhinosinusitis, speech disorders, snoring, oral breathing and nasal obstruction.
Objective: To evaluate the impact of enzymatic replacement therapy with laronidase (Aldurazyme(®)) in patients with mucopolysaccharidosis (MPS I), regarding sleep and hearing disorders, and clinical manifestations in the upper respiratory tract (URT).
Purpose: To follow the maturation of the auditory pathway of infants born small for gestational age term, by studying absolute and interpeak latencies of Auditory Brainstem Response (ABR) in the first six months of life.
Methods: Multicentric prospective longitudinal study. The ABR was carried out in the neonatal period in 96 newborn infants, 49 small for gestational age (SGA) and 47 appropriate for gestational age (AGA).
Purpose: To follow up the maturation of the auditory pathway in preterm infants small for gestational age (SGA), through the study of absolute and interpeak latencies of auditory brainstem response (ABR) in the first six months of age.
Methods: This multicentric prospective cross-sectional and longitudinal study assessed 76 newborn infants, 35 SGA and 41 appropriate for gestational age (AGA), born between 33 and 36 weeks in the first evaluation. The ABR was carried out in three moments (neonatal period, three months and six months).
Objective: To investigate the influence of gender and weight/gestational age ratio on the Auditory Brainstem Response (ABR) in preterm (PT) and term (T) newborns.
Methods: 176 newborns were evaluated by ABR; 88 were preterm infants - 44 females (22 small and 22 appropriate for gestational age) and 44 males (22 small and 22 appropriate for gestational age). The preterm infants were compared to 88 term infants - 44 females (22 small and 22 appropriate for gestational age) and 44 males (22 small and 22 appropriate for gestational age).
Purpose: To characterize the Auditory Brainstem Response (ABR) of small for gestational age preterm newborns and to compare the findings to those of appropriate for gestational age premature newborns in order to verify whether the small for gestational age condition is a risk factor for hearing loss.
Methods: This prospective cross-sectional multicenter study evaluated 72 preterm newborns of both genders (35 small and 37 appropriate for gestational age), who were born at 30 to 36 weeks of gestational age and were evaluated before hospital discharge. Only newborns with present transient evoked otoacoustic emissions and tympanometry type A were included.
Association between phenotype, performance with hearing aids, and genotype of childhood hearing loss in children with and without genetic alteration.
J Soc Bras Fonoaudiol
July 2013
Purpose: To establish the frequency of genetic mutations related to sensorineural hearing loss (SNHL); to verify if there is association between the degree of SNHL and the presence of genetic alteration; and to verify if the Minimal Response Levels (MRL) with hearing aids vary according to the genetic alteration.
Methods: Thirty hearing aids users with ages between 8 and 111 months were evaluated. The evaluation procedures used were: pure-tone audiometry; the auditory steady state response (ASSR) on sound field, with and without hearing aids; and genetic study of the hearing loss.
Purpose: To describe the Brainstem Auditory Evoked Potential (BAEP) results of full-term small-for-gestational-age newborns, comparing them to the results of full-term appropriate-for-gestational-age newborns, in order to verify whether the small-for-gestational-age condition is a risk indicator for retrocochlear hearing impairment.
Methods: This multicentric prospective cross-sectional study assessed 86 full-term newborns - 47 small- (Study Group) and 39 appropriate-for-gestational-age (Control Group - of both genders, with ages between 2 and 12 days. Newborns with presence of transient evoked otoacoustic emissions and type A tympanometry were included in the study.
Unlabelled: Attention deficit hyperactivity disorder (ADHD) patients show, as one of the main symptoms, an attentional impairment. Selective attention in the hearing process is the ability to understand speech in a noisy environment, which can be evaluated by several methods. One of the main approaches is the functioning of the Medial Olivocochlear Efferent System, which can be accessed by Transient-Evoked Otoacoustic Emissions (TOAE).
View Article and Find Full Text PDFUnlabelled: Infants should be submitted to hearing screening upon birth, and for the results to be complete, it is necessary to assess middle ear conditions.
Objective: To check whether the type of breastfeeding in infants between zero and four months can impact middle ear conditions my means an ENT assessment and acoustic immittance comparing neonates who were submitted to hearing screening with those who failed it.
Materials And Methods: Otoacoustic emissions (OAE) was carried out in 60 infants between zero and four months.
Neonatal Hearing Screening: failures, hearing loss and risk indicators.
Braz J Otorhinolaryngol
September 2012
Unlabelled: To check the rate of failure, hearing loss and its association with demographic variables and risk indicators for hearing loss in newborns submitted to the Newborn Hearing Screening in a secondary hospital.
Materials And Methods: Cross-sectional and retrospective study, involving 1,570 newborns submitted to the different stages of the Newborn Hearing Screening Program. Initially, we carried out otoacoustic emission tests (ILO Echocheck) and the cochlear-eyelid reflex.
Unlabelled: Accurate information about type, degree, and configuration of hearing loss are necessary for successful audiological early interventions. Auditory brainstem response with tone burst stimuli (TB ABR) and auditory steady-state response (ASSR) exams provide this information.
Aim: To analyze the clinical applicability of TB ABR and ASSR at 2 kHz in infants, comparing responses in full-term and premature neonates.
[Auditory processing evaluation in children born preterm].
J Soc Bras Fonoaudiol
February 2012
Purpose: To verify the performance of children born preterm on auditory processing evaluation, and to correlate the data with behavioral hearing assessment carried out at 12 months of age, comparing the results to those of auditory processing evaluation of children born full-term.
Methods: Participants were 30 children with ages between 4 and 7 years, who were divided into two groups: Group 1 (children born preterm), and Group 2 (children born full-term). The auditory processing results of Group 1 were correlated to data obtained from the behavioral auditory evaluation carried out at 12 months of age.
Conductive impairment in newborn who failed the newborn hearing screening.
Braz J Otorhinolaryngol
January 2011
Unlabelled: In newborn hearing screening little importance is attributed to changes in the middle ear. Children with secretory otitis in the neonatal period are at risk for developing otitis media in the first year of life.
Aim: To determine if children who failed the hearing screening because of conductive hearing loss have more episodes of conductive hearing impairment during their first years of life.
Unlabelled: Smoking is a public health concern and we are still unsure of its relation with auditory problems.
Aim: To study the effects of cigarette smoking in auditory thresholds, in otoacoustic emissions and in their inhibition by the efferent olivocochlear medial system.
Materials And Methods: 144 adults from both genders, between 20 and 31 years of age, smoking and non-smoking individuals were submitted to conventional and high-frequency audiometry, transient stimuli otoacoustic emissions and suppression effect investigation.
Background: expressive language of pre-term children.
Aim: to compare the expressive vocabulary of two year-old children born prematurely, to that of those born at term.
Methods: the study sample was composed by 118 speech-language assessment protocols, divided in two groups: the pre-term group (PTG) composed by 58 underweight premature children followed by a multi-professional team at the Casa do Prematuro (House of Premature Children) at Unifesp, and the full-term group (FTG) composed by 60 full-term born children.
Unlabelled: Vitiligo is a skin disease characterized by absence of melanin due to melanocytes destruction.
Aim: to study the incidence of hearing alterations in patients with vitiligo.
Method: prospective audiological evaluation, transient-evoked otoacoustic emission recordings and study the effects of suppression in 24 patients with vitiligo.
Unlabelled: Audiological evaluation in infants should include the middle ear (immitance measures and otoscopy) and also a cochlear evaluation.
Aim: To check which tympanometry tone test (226 Hz or 1000 Hz), transient otoacoustic emissions and otoscopy.
Methods: Transient otoacoustic emissions were taken from sixty infants ranging from zero to four months of age.