Read by QxMD icon Read

ABR bone conduction

Lisa L Hunter, Chelsea M Blankenship, Rebekah G Gunter, Douglas H Keefe, M Patrick Feeney, David K Brown, Kelly Baroch
BACKGROUND: Examination of cochlear and neural potentials is necessary to assess sensory and neural status in infants, especially those cared for in neonatal intensive care units (NICU) who have high rates of hyperbilirubinemia and thus are at risk for auditory neuropathy (AN). PURPOSE: The purpose of this study was to determine whether recording parameters commonly used in click-evoked auditory brain stem response (ABR) are useful for recording cochlear microphonic (CM) and Wave I in infants at risk for AN...
May 2018: Journal of the American Academy of Audiology
Young Joon Seo, Chanbeom Kwak, Saea Kim, Yoon Ah Park, Kyoung Ho Park, Woojae Han
Auditory brainstem responses (ABR) have been used as a powerful and the most common objective tool to evaluate hearing sensitivity and to diagnose the types of hearing loss and neurological disorders, through the auditory peripheral pathway to a central level of the brainstem, since 1971. Although bone-conduction (BC) ABR could be an alternative to air-conduction (AC) ABR, as the former overcomes some limitations of the latter, the majority of clinicians rarely utilize it due to a lack of knowledge and no routine test administration...
April 2018: Journal of Audiology & Otology
Cihan Abaylı, Yusuf Kul, Muhsin Koten, Ahmet Rıfat Karasalihoğlu, Abdullah Taş, Recep Yağız, Erdoğan Bulut
Objective: This study aimed to investigate possible ototoxicity associated with topical rifamycin application via electrophysiological tests and ultrastructural examinations. Methods: Electrophysiological assessment was performed with tympanometry, auditory brainstem response (ABR), and distortion product otoacoustic emission (DPOAE) measurements. This study was conducted on 40 ears of 20 guinea pigs that were detected to have normal hearing thresholds. The animals were randomly assigned to three groups: Group 1 (n=12) received 0...
September 2017: Turkish Archives of Otorhinolaryngology
Pricila Sleifer, Dayane Domeneghini Didoné, Ísis Bicca Keppeler, Claudine Devicari Bueno, Rudimar Dos Santos Riesgo
Introduction  The tone-evoked auditory brainstem responses (tone-ABR) enable the differential diagnosis in the evaluation of children until 12 months of age, including those with external and/or middle ear malformations. The use of auditory stimuli with frequency specificity by air and bone conduction allows characterization of hearing profile. Objective  The objective of our study was to compare the results obtained in tone-ABR by air and bone conduction in children until 12 months, with agenesis of the external auditory canal...
October 2017: International Archives of Otorhinolaryngology
Andrew Stuart, Hannah M Dorothy
OBJECTIVE: The feasibility and repeatability of neonate auditory brainstem responses (ABRs) with a controlled hand-held applied force gauge for bone-conducted stimulus delivery was examined. DESIGN: A repeated measures test-retest design was employed. STUDY SAMPLE: Participants were 27 healthy neonates. A 4000 Hz bone-conducted CE-Chirp octave band stimulus evoked the ABRs. Intra- and intertester conditions were employed with a prototype hand-held applied force gauge (Etymōtic Research) attached to the superior aspect of the bone vibrator...
January 2018: International Journal of Audiology
Konrad Johannes Stuermer, Astrid Foerst, Pascale Sandmann, Dirk Fuerstenberg, Ruth Lang-Roth, Martin Walger
OBJECTIVE: To date, the impact of conductive hearing loss on the auditory pathway at brainstem level has only been investigated in animal studies, which showed a species-specific delay of maturation. In this study, the functional maturation of auditory brainstem response (ABR) parameters in humans with unilateral atresia of the external auditory canal was investigated. METHODS: 42 newborns and toddlers ranging in age from 13 days to 11 months were included. The click-evoked ABR interpeak latencies (IPL) of the atretic ears and the contralateral ears with normal hearing were evaluated...
April 2017: International Journal of Pediatric Otorhinolaryngology
Ömer Faruk Birkent, Turgut Karlıdağ, Figen Başar, Şinasi Yalçın, İrfan Kaygusuz, Erol Keleş, Abdulvahap Akyiğit
OBJECTIVE: The aim of this study was to determine the air-bone gaps in adults with mixed-type hearing loss using air-conduction auditory brainstem response (ABR) latencies. MATERIALS AND METHODS: Thirty adults with mixed-type hearing loss (study group) and 30 adults with normal hearing (control group) were included in this study. Before performing ABR measurements, ear, nose, and throat examinations, pure tone audiometry, speech audiometry, acoustic immittance audiometry, and transient evoked autoacoustic emission testing were performed for all participants...
April 2017: Journal of International Advanced Otology
Rensa Chen, Martin Schwander, Mary F Barbe, Marion M Chan
Globally, a body of comparative case-control studies suggests that rheumatoid arthritis (RA) patients are more prone to developing hearing loss (HL). However, experimental evidence that supports this hypothesis is still lacking because the human auditory organ is not readily accessible. The aim of this study was to determine the association between bone damage to the ossicles of the middle ear and HL, using a widely accepted murine model of collagen-induced arthritis (RA mice). Diarthrodial joints in the middle ear were examined with microcomputer tomography (microCT), and hearing function was assessed by auditory brainstem response (ABR)...
2016: PloS One
Kensi M Cobb, Andrew Stuart
OBJECTIVES: The purpose of the study was to generate normative auditory brainstem response (ABR) wave component peak latency and amplitude values for neonates with air- and bone-conducted CE-Chirps and air-conducted CE-Chirp octave band stimuli (i.e., 500, 1000, 2000, and 4000 Hz). A second objective was to compare neonate ABRs to CE-Chirp stimuli with ABR responses to traditional click and tone burst stimuli with the same stimulus parameters. DESIGN: Participants were 168 healthy neonates...
November 2016: Ear and Hearing
Kensi M Cobb, Andrew Stuart
OBJECTIVES: The purpose of the study was to examine the differences in auditory brainstem response (ABR) latency and amplitude indices to the CE-Chirp stimuli in neonates versus young adults as a function of stimulus level, rate, polarity, frequency and gender. DESIGN: Participants were 168 healthy neonates and 20 normal-hearing young adults. ABRs were obtained to air- and bone-conducted CE-Chirps and air-conducted CE-Chirp octave band stimuli. The effects of stimulus level, rate, and polarity were examined with air-conducted CE-Chirps...
November 2016: Ear and Hearing
Kensi M Cobb, Andrew Stuart
PURPOSE: The purpose of this study was to compare auditory brainstem response (ABR) thresholds to air- and bone-conducted CE-Chirps in neonates and adults. METHOD: Thirty-two neonates with no physical or neurologic challenges and 20 adults with normal hearing participated. ABRs were acquired with a starting intensity of 30 dB normal hearing level (nHL). The lowest stimulus intensity level at which a wave V was identifiable and replicable was considered the ABR threshold...
August 1, 2016: Journal of Speech, Language, and Hearing Research: JSLHR
Elisa Biamino, Andrea Canale, Michelangelo Lacilla, Annalisa Marinosci, Federico Dagna, Lorenzo Genitori, Paola Peretta, Margherita Silengo, Roberto Albera, Giovanni Battista Ferrero
OBJECTIVE: To assess the audiological profile in a cohort of children affected by syndromic craniosynostosis. METHODS: Eleven children with Apert syndrome (n=4), Saethre-Chotzen syndrome (n=3), Muenke syndrome (n=2), Crouzon syndrome (n=1) and Pfeiffer syndrome type 1 (n=1) were submitted to a complete audiologic evaluation including otoscopy, pure-tone audiometry, tympanometry and acoustic reflex testing, ABR, otoacustic emissions, temporal bone High Resolution CT (HRCT) scan...
June 2016: International Journal of Pediatric Otorhinolaryngology
Ronen Perez, Cahtia Adelman, Haim Sohmer
Conclusion Cochlea can be directly excited by fluid (soft-tissue) stimulation. Objective To determine whether there is no difference in auditory-nerve-brainstem evoked response (ABR) thresholds to fluid stimulation between normal and animal models of post radical-mastoidectomy, as seen in a previous human study. Background It has been shown in humans that hearing can be elicited with stimulation to fluid in the external auditory meatus (EAM), and radical-mastoidectomy cavity. These groups differed in age, initial hearing, and drilling exposure...
2016: Acta Oto-laryngologica
M J Bergin, P A Bird, S M Vlajkovic, P R Thorne
Permanent high frequency (>4 kHz) sensorineural hearing loss following middle ear surgery occurs in up to 25% of patients. The aetiology of this loss is poorly understood and may involve transmission of supra-physiological forces down the ossicular chain to the cochlea. Investigating the mechanisms of this injury using animal models is challenging, as evaluating cochlear function with evoked potentials is confounded when ossicular manipulation disrupts the normal air conduction (AC) pathway. Bone conduction (BC) using clinical bone vibrators in small animals is limited by poor transducer output at high frequencies sensitive to trauma...
December 2015: Hearing Research
Mick Metselaar, Gülnez Demirtas, Teun van Immerzeel, Marc van der Schroeff
OBJECTIVE: This study investigates the most appropriate audiometric criterion in deciding which patients with asymmetric hearing loss should be referred to MRI to exclude a lesion in the cerebellopontine angle (CPA). Careful selection of patients could improve resource utilization while preventing unnecessary investigations with accompanying burden and costs. STUDY DESIGN: Retrospective case review. SETTING: Tertiary referral center. PATIENTS: Of all the patients who were referred to our clinic between 1997 and 2012, the records were reviewed of those who underwent pure-tone audiometry, auditory brainstem response (ABR) testing, and had a Gadolinium-enhanced MRI of the CPA...
December 2015: Otology & Neurotology
Junming Chen, Yuanxin Zhao, Xiaowei Zhou, Lingmei Tan, Zeying Ou, Youjun Yu, Yuejian Wang
OBJECTIVES/HYPOTHESIS: To investigate the hearing protective effects of methylprednisolone use during radiotherapy in patients with nasopharyngeal carcinoma. STUDY DESIGN: Prospective, controlled clinical study. METHODS: Fifty-three patients with nasopharyngeal carcinoma (106 ears). Twenty-five patients (50 ears) received radiotherapy with intravenous methylprednisolone for 14 days, and another 28 patients (56 ears) received radiotherapy alone...
January 2016: Laryngoscope
Lichun Zhang, Na Gao, Yanbo Yin, Lin Yang, Youzhou Xie, Ying Chen, Peidong Dai, Tianyu Zhang
Previous researches focusing on BC hearing mechanisms proved that the two routes, (1) EAC sound radiation and (2) inertial of ossicular chain, partially contribute to normal BC hearing. Therefore, the BC hearing for those patients with congenital aural atresia should partially decrease theoretically due to their abnormal anatomy. However, there are not many studies which mention these patients' BC hearing up till now. The objective of this study is to investigate congenital aural atresia patient's BC hearing by analysis of pre-surgical audiogram and to study their potential BC hearing mechanisms using animal modeling and their ABR measurements...
July 2016: European Archives of Oto-rhino-laryngology
Yibei Wang, Xiaowei Chen, Yue Fan, Zhen Wang
OBJECTIVE: To evaluate auditory developments and the effectiveness of children with congenital bilateral aural atresia after using softband Ponto and to compare them with children with normal hearing. METHOD: Twenty patients (age ranging from 3 months to 21 months ) with bilateral aural atresia were studied. The air and bone auditory thresholds were assessed by auditory brain stem response (ABR). The infant-todder meaning auditory integration scale (IT-MAIS) was used to evaluate the auditory development at three time levels: baseline, 3 months and 6 months...
February 2015: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
Alaaeldin M Elsayed, Lisa L Hunter, Douglas H Keefe, M Patrick Feeney, David K Brown, Jareen K Meinzen-Derr, Kelly Baroch, Maureen Sullivan-Mahoney, Kara Francis, Leigh G Schaid
OBJECTIVES: To study normative thresholds and latencies for click and tone-burst auditory brainstem response (TB-ABR) for air and bone conduction in normal infants and those discharged from neonatal intensive care units, who passed newborn hearing screening and follow-up distortion product otoacoustic emission. An evoked potential system (Vivosonic Integrity) that incorporates Bluetooth electrical isolation and Kalman-weighted adaptive processing to improve signal to noise ratios was employed for this study...
July 2015: Ear and Hearing
Keiko Tsukamoto
There are many diseases specific to childhood. Therefore, there are several specific examinations which are not performed in adults. In this article, we introduce some examinations specific to the neonatal period. Newborn mass-screening using tandem mass spectrometry is conducted to diagnose congenital metabolic error before onset early after birth and minimize the influence of disturbance. Tandem mass spectrometry is performed to detect amino acid metabolism disturbance, urea cycle disorder, organic acid metabolism disturbance, and fatty acid metabolism disturbance...
August 2014: Rinsho Byori. the Japanese Journal of Clinical Pathology
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"