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Papers by Amir HoOosein jafari
Introduction: Cochlear implantation can facilitate the development of communication skills in chi... more Introduction: Cochlear implantation can facilitate the development of communication skills in children with profound hearing loss. The objectives of our study were to determine the average ages at suspicion and diagnosis of hearing loss, amplification, intervention, and performing the cochlear implantation and to investigate the effects of the parents' level of education and economic circumstances on the age of the child at cochlear implantation. Materials and Methods: The parents of 96 children with profound sensorineural hearing loss who had received a cochlear implant at Amir-Alam Cochlear Implant Center between 2008 and 2010 were asked to complete a survey. The survey included demographic information, and birth, medical, and hearing loss history of their child. Study data were obtained through the patient database in the Cochlear Implant Center and interviews with the parents. Results: The mean times between the age of the children at diagnosis of hearing loss and amplification, beginning the rehabilitation program, and performing the cochlear implantation were 4.05 (±0.86), 2.59 (±0.9), and 25.43 (±1.45) months, respectively; delays that were statistically significant (P≤0.004). In 47.9 percent of cases, the parents were the first people to suspect the occurrence of hearing loss in their child. Statistical analysis indicated that the age at cochlear implantation decreases as the educational level of the parents increases (P≤0.003). There was also a significant difference between parents' economic circumstances and the age of cochlear implantation (P<0.0001). Conclusion: There is still a remarkable delay between the diagnosis of hearing loss and aural rehabilitation in hearing-impaired children. Parents' levels of education and economic circumstances have a noticeable effect on the age of cochlear implantation in hearing-impaired children.
Iranian Journal of Otorhinolaryngology, 2013
Introduction: The family of each hearing-impaired child has its own cultural, social, educational... more Introduction: The family of each hearing-impaired child has its own cultural, social, educational, and financial background, and its own special needs. The objectives of our study were to explore the information and support needs of parents of children with severe-to-profound hearing impairment and to investigate the effects of the parents’ level of education and economic status on the score attained in the parents’-needs questionnaire. Materials and Methods: Fifty-one parents of children with severe-to-profound hearing loss (53% girls, 47% boys; mean age 47.96 months) who used the Auditory-Verbal Therapy approach were asked to complete the parents’-needs questionnaire. The questionnaire included demographic information and hearing-loss history and covered six domains which evaluated the information or support needs of parents. Parental needs with regard to different domains were evaluated separately in all participants. Results: Statistical analysis indicated that there was a signi...
Iranian Journal of Otorhinolaryngology, 2012
Introduction: Cochlear implantation can facilitate the development of communication skills in chi... more Introduction: Cochlear implantation can facilitate the development of communication skills in children with profound hearing loss. The objectives of our study were to determine the average ages at suspicion and diagnosis of hearing loss, amplification, intervention, and performing the cochlear implantation and to investigate the effects of the parents’ level of education and economic circumstances on the age of the child at cochlear implantation. Materials and Methods: The parents of 96 children with profound sensorineural hearing loss who had received a cochlear implant at Amir-Alam Cochlear Implant Center between 2008 and 2010 were asked to complete a survey. The survey included demographic information, and birth, medical, and hearing loss history of their child. Study data were obtained through the patient database in the Cochlear Implant Center and interviews with the parents. Results: The mean times between the age of the children at diagnosis of hearing loss and amplification,...
Iranian Journal of Otorhinolaryngology, 2013
Introduction: Preterm birth is a risk factor for a number of conditions that requires comprehensi... more Introduction: Preterm birth is a risk factor for a number of conditions that requires comprehensive examination. Our study was designed to investigate the impact of preterm birth on the processing of auditory stimuli and brain structures at the brainstem level at a preschool age. Materials and Methods: An auditory brainstem response (ABR) test was performed with low rates of stimuli in 60 children aged 4 to 6 years. Thirty subjects had been born following a very preterm labor or late-preterm labor and 30 control subjects had been born following a full-term labor. Results: Significant differences in the ABR test result were observed in terms of the inter-peak intervals of the I–III and III–V waves, and the absolute latency of the III wave (P<0.019). No significant differences were observed in the amplitude of the I or V waves. The choice of test ear examined had no effect on the results. Conclusion: Our results indicate an effect of preterm birth on ABRs and synchronization of aud...
European Archives of Oto-Rhino-Laryngology, 2013
Increased serum bilirubin levels during infancy increase the risk of hearing loss in infants. Thi... more Increased serum bilirubin levels during infancy increase the risk of hearing loss in infants. This study aimed to investigate the relationship between pure-tone audiometry hearing thresholds and thresholds estimated using auditory steady-state responses (ASSRs) in children with a history of neonatal hyperbilirubinemia, and to evaluate the usefulness of 90-Hz ASSR in estimating hearing thresholds in children. This study was conducted on 26 children (13 girls and 13 boys) who were aged 2.4-11 years and had a history of neonatal hyperbilirubinemia (bilirubin level [17 mg/dL). ASSR thresholds were compared with behavioral thresholds and were interpreted after considering the amount and type of hearing loss. Of the 26 children, 12 had normal hearing thresholds, and 14 had varying degrees of sensorineural hearing loss. In general, a high correlation (r C 0.81, p \ 0.01) was found between the ASSR and behavioral thresholds. The highest correlation was observed at 2,000 Hz (r = 0.88, p \ 0.01). No significant difference was observed (p [ 0.13) between mean behavioral and ASSR thresholds at 52 studied ears. The results of this study showed that 90-Hz ASSR assessments provide reliable estimates of behavioral hearing thresholds in children who have a history of neonatal hyperbilirubinemia and sensorineural hearing loss or normal hearing.
Introduction: Cochlear implantation can facilitate the development of communication skills in chi... more Introduction: Cochlear implantation can facilitate the development of communication skills in children with profound hearing loss. The objectives of our study were to determine the average ages at suspicion and diagnosis of hearing loss, amplification, intervention, and performing the cochlear implantation and to investigate the effects of the parents' level of education and economic circumstances on the age of the child at cochlear implantation. Materials and Methods: The parents of 96 children with profound sensorineural hearing loss who had received a cochlear implant at Amir-Alam Cochlear Implant Center between 2008 and 2010 were asked to complete a survey. The survey included demographic information, and birth, medical, and hearing loss history of their child. Study data were obtained through the patient database in the Cochlear Implant Center and interviews with the parents. Results: The mean times between the age of the children at diagnosis of hearing loss and amplification, beginning the rehabilitation program, and performing the cochlear implantation were 4.05 (±0.86), 2.59 (±0.9), and 25.43 (±1.45) months, respectively; delays that were statistically significant (P≤0.004). In 47.9 percent of cases, the parents were the first people to suspect the occurrence of hearing loss in their child. Statistical analysis indicated that the age at cochlear implantation decreases as the educational level of the parents increases (P≤0.003). There was also a significant difference between parents' economic circumstances and the age of cochlear implantation (P<0.0001). Conclusion: There is still a remarkable delay between the diagnosis of hearing loss and aural rehabilitation in hearing-impaired children. Parents' levels of education and economic circumstances have a noticeable effect on the age of cochlear implantation in hearing-impaired children.
Iranian Journal of Otorhinolaryngology, 2013
Introduction: The family of each hearing-impaired child has its own cultural, social, educational... more Introduction: The family of each hearing-impaired child has its own cultural, social, educational, and financial background, and its own special needs. The objectives of our study were to explore the information and support needs of parents of children with severe-to-profound hearing impairment and to investigate the effects of the parents’ level of education and economic status on the score attained in the parents’-needs questionnaire. Materials and Methods: Fifty-one parents of children with severe-to-profound hearing loss (53% girls, 47% boys; mean age 47.96 months) who used the Auditory-Verbal Therapy approach were asked to complete the parents’-needs questionnaire. The questionnaire included demographic information and hearing-loss history and covered six domains which evaluated the information or support needs of parents. Parental needs with regard to different domains were evaluated separately in all participants. Results: Statistical analysis indicated that there was a signi...
Iranian Journal of Otorhinolaryngology, 2012
Introduction: Cochlear implantation can facilitate the development of communication skills in chi... more Introduction: Cochlear implantation can facilitate the development of communication skills in children with profound hearing loss. The objectives of our study were to determine the average ages at suspicion and diagnosis of hearing loss, amplification, intervention, and performing the cochlear implantation and to investigate the effects of the parents’ level of education and economic circumstances on the age of the child at cochlear implantation. Materials and Methods: The parents of 96 children with profound sensorineural hearing loss who had received a cochlear implant at Amir-Alam Cochlear Implant Center between 2008 and 2010 were asked to complete a survey. The survey included demographic information, and birth, medical, and hearing loss history of their child. Study data were obtained through the patient database in the Cochlear Implant Center and interviews with the parents. Results: The mean times between the age of the children at diagnosis of hearing loss and amplification,...
Iranian Journal of Otorhinolaryngology, 2013
Introduction: Preterm birth is a risk factor for a number of conditions that requires comprehensi... more Introduction: Preterm birth is a risk factor for a number of conditions that requires comprehensive examination. Our study was designed to investigate the impact of preterm birth on the processing of auditory stimuli and brain structures at the brainstem level at a preschool age. Materials and Methods: An auditory brainstem response (ABR) test was performed with low rates of stimuli in 60 children aged 4 to 6 years. Thirty subjects had been born following a very preterm labor or late-preterm labor and 30 control subjects had been born following a full-term labor. Results: Significant differences in the ABR test result were observed in terms of the inter-peak intervals of the I–III and III–V waves, and the absolute latency of the III wave (P<0.019). No significant differences were observed in the amplitude of the I or V waves. The choice of test ear examined had no effect on the results. Conclusion: Our results indicate an effect of preterm birth on ABRs and synchronization of aud...
European Archives of Oto-Rhino-Laryngology, 2013
Increased serum bilirubin levels during infancy increase the risk of hearing loss in infants. Thi... more Increased serum bilirubin levels during infancy increase the risk of hearing loss in infants. This study aimed to investigate the relationship between pure-tone audiometry hearing thresholds and thresholds estimated using auditory steady-state responses (ASSRs) in children with a history of neonatal hyperbilirubinemia, and to evaluate the usefulness of 90-Hz ASSR in estimating hearing thresholds in children. This study was conducted on 26 children (13 girls and 13 boys) who were aged 2.4-11 years and had a history of neonatal hyperbilirubinemia (bilirubin level [17 mg/dL). ASSR thresholds were compared with behavioral thresholds and were interpreted after considering the amount and type of hearing loss. Of the 26 children, 12 had normal hearing thresholds, and 14 had varying degrees of sensorineural hearing loss. In general, a high correlation (r C 0.81, p \ 0.01) was found between the ASSR and behavioral thresholds. The highest correlation was observed at 2,000 Hz (r = 0.88, p \ 0.01). No significant difference was observed (p [ 0.13) between mean behavioral and ASSR thresholds at 52 studied ears. The results of this study showed that 90-Hz ASSR assessments provide reliable estimates of behavioral hearing thresholds in children who have a history of neonatal hyperbilirubinemia and sensorineural hearing loss or normal hearing.