Papers by Mohamed M Elmoursy
Egyptian Journal of Neck Surgery and Otorhinolaryngology
Al-Azhar Assiut Medical Journal, 2022
Background and aim Audiovestibular dysfunctions have been previously linked to osteoporosis (OP) ... more Background and aim Audiovestibular dysfunctions have been previously linked to osteoporosis (OP) with controversies about the mutual relationship. In this study, we aimed to assess the audiovestibular functions in patients with OP and osteopenia and to study their association with vitamin D deficiency. Patients and methods Of 60 patients enrolled in this study, 30 had low bone mineral density (BMD) (group I) and 30 had normal BMD (group II). After clinical examination and evaluation of serum vitamin D and calcium levels, the participants then were referred for audiovestibular assessments, which included basic audiological evaluation by pure tone audiometry and speech audiometry, tympanometry, acoustic reflex, video-nystagmoscopy tests, and vestibular-evoked myogenic potential (VEMP) to assess saccular function. Both participants and audiologist were blinded regarding the BMD results. Results There was a significant difference between patients and controls regarding the level of calc...
Egyptian Journal of Ear, Nose, Throat and Allied Sciences, 2019
Background: Combined hearing and vestibular loss in children pose potentially significant problem... more Background: Combined hearing and vestibular loss in children pose potentially significant problems. Children and infants with vestibular problems are faced with motor problems that could limit their normal development. Objectives: the aim of the study is to assess the relationship between the vestibular disorders and the delayed motor development in hearing impaired children as well as to assess the integrity of the vestibular system through clinical testing and radiological imaging in those children with delayed motor development. Methods: Thirty hearing impaired children with history of delayed motor milestones, and a control group of 10 hearing impaired children with normal motor development were included with variable degree of hearing loss. Each child was subjected to careful history taking, general examination, otoscopic examination, motor and balance questionnaires were answered by the parents or caregivers, audiological evaluation either through conditioned play audiometry or conventional audiometry, speech audiometry and Immittancemetry. Vestibular evaluation through cVEMP and caloric tests and finally the radiological studies through CT and MRI of the petrous bone. Results: There were variable degrees of hearing loss among both groups. In the control group (10 HI children, 20 ears), 18 ears (90%) had VEMP response, while two ears (10%) had absent VEMP, while in the study group (30 HI children, 60 ears), 48 ears (80%) had VEMP response, while 12 ears (20%) had absent VEMP. All children in the control group had normal caloric response, while in the study group, 23 children (77%) had normal response, and seven children (23%) had abnormal caloric response, 4 children had bilateral weakness and 3 had unilateral weakness. CT and MRI study of petrous bone was done for the control group and revealed normal radiology, while in the study group, 21 children had normal imaging (70%) and the last 9 children (30%) had abnormal findings, the most common abnormalities was enlarged vestibular aqueduct (13%), followed by common cavity (7%). Conclusion: Children with hearing loss, irrespective of the degree of hearing loss, the vestibular system should be screened, assessed as it may be responsible for co-morbidities in fine and gross motor difficulties. Early intervention and effective therapy will be the proper way to get good outcome.
Benha Journal of Applied Sciences, 2021
Background: Vertigo is an illusory sense of motion in the absence of real movement, either in the... more Background: Vertigo is an illusory sense of motion in the absence of real movement, either in the self or the environment. Vertigo is isolated and has no positive indications of dysfunction of the central neurological system. Study aims at studying MRI, TCD and BAEP relationships and alterations in individuals with isolated vertigo. Methods: Patient control research involves 50 patients with isolated vertigo, 50 matched age and gender health controls, from Al-Azhar University Hospitals, Assuit, Egypt, neurology and audio vestibular hospitals, from May 2019 through to June 2021. Results: patient start age with vertigo (40-60), disease duration (2-3) years, 70% with peripheral vertigo,30% with central vertigo, 86% with abnormal and 70% with abnormal BAEP and 74% with vertigo with an abnormal TCD. Relationship and variations in cervical MRI, TCD and BAEP in 50 patients with "isolated" vertigo and 50 healthy controls respectively were examined. Results: A statistically significant differences between the two groups were found for total TCD, BAEP abnormalities and no significant differences between the two groups in cervical MRI abnormalities. The findings revealed strong associations between TCD and cervical MRI, TCD and BAEP in the vertigo group. And TCD PI analysis and certain BAEP items revealed positive linear relationships. In the control group, there were no statistical differences or relationships. Conclusions: TCD is a "isolated" vertigo screening sensitive technique. A combined cervical MRI, TCD and BAEP test regimen is suited to evaluate the "isolated" vertigo.
Background: Covid-19 is a new pandemic infectious disease emerged in Wuhan, China at the end of 2... more Background: Covid-19 is a new pandemic infectious disease emerged in Wuhan, China at the end of 2019, we aimed to evaluate the Sudden sensorineural hearing loss (SSNHL) prevalence after covid 19 infection or even vaccination. Methods: Two-centre retrospective, observational cross-sectional study performed at tertiary care referral Audio-vestibular Medicine Units at the period between August 1 st 2020 and October 31 st 2021. All sudden sensorineural hearing loss (SSNHL) patients diagnosed in a period of a month with Covid-19 or vaccinated with Covid-19 vaccine were participated in this study. Results: Fifty-three cases with con rmed Covid-19 and one patient vaccinated with Covid-19 vaccine one week before, reported sudden sensory neural hearing loss were included in this study. forty-eight patients had unilateral hearing loss and 6 patients had bilateral hearing loss. Forty-nine patients with typical Covid-19 symptoms, one patient discovered after complaining of anosmia and ageusia, one patient after Covid-19 vaccination and three patient was complaining only from hearing loss and had PCR test for nasopharyngeal swapes to prove infection were participated in our study. Different degrees of SSNHL were ranged from mild to severe and most of the patients had severe hearing loss. Conclusion: With more patients, Covid-19 may be a potential factor in sudden sensorineural hearing loss. It should be kept in mind that SSNHL may be the only indicator used to identify Covid-19 cases. Con icts of interest/Competing interests: the authors declare that they have no competing interests. Ethics approval and consent to participate: verbal consent was taken from all patients to participate in this study and all data kept con dential. The study was performed in accordance with the Helsinki Declaration of 1975 and its amendments. The study protocol was approved by the Research Ethics
The Egyptian Journal of Otolaryngology
Background The most common radiologically detectable congenital inner ear anomaly is an enlarged ... more Background The most common radiologically detectable congenital inner ear anomaly is an enlarged vestibular aqueduct (EVA), which is associated with varying degrees of hearing loss and vestibular disorders. The purpose of this study was to ascertain the enlarged vestibular aqueduct incidence in hearing-impaired children sent to a tertiary care referral center, as well as to describe the audiologic pattern of EVA in those individuals. Results In a retrospective study of 3765 hearing-impaired children aged 1 to 10 years, 450 had EVA (11.95%). The EVA was more prevalent in female populations (54.4%). Head trauma was present in 26.7% of cases; a positive family history of EVA was present in 17.8%. The most common associated syndrome was Pendred syndrome. Progressive hearing loss was observed in 25.6% of patients, fluctuant hearing loss in 19.1%, and sudden hearing loss in 2% of the patients. Conclusion The most prevalent inner ear anomaly is an enlarged vestibular aqueduct, contributing...
American Journal of Otolaryngology, 2021
BACKGROUND Benign paroxysmal positional vertigo is characterized as brief episodes of vertigo tha... more BACKGROUND Benign paroxysmal positional vertigo is characterized as brief episodes of vertigo that are exacerbated by the unexpected act of moving to a current provoking location. It is thought to be an otoconia-related balance disorder. Our objectives were to assess the serum concentrations of vitamin D and calcium (total and ionized) in cases with BPPV, determine if low vitamin D levels were regarded as a cause for BPPV relapse, and determine whether vitamin D supplementation would minimize the risk of BPPV relapse. RESULTS Sixty cases with BPPV were included in the study; 53 cases had posterior canal BPPV, while seven had lateral canal BPPV. Canalithiasis was the most common type of BPPV pathology. Forty cases had abnormally low levels of vitamin D. There was a statistically significant positive correlation between the mean vitamin D assay for all cases with BPPV and serum calcium. There was statistically significant difference in comparing the relapse of BPPV for group that receive vitamin D after one year follow up. CONCLUSION Abnormal vitamin D levels were linked with the incident and relapse of BPPV. Correction of low vitamin D levels was linked with the reduction of the relapse of BPPV.
Egyptian Journal of Neck Surgery and Otorhinolaryngology, 2021
Al-Azhar Assiut Medical Journal, 2021
Background Psoriasis is a multisystem, immune disorder driven by inflammatory processes, characte... more Background Psoriasis is a multisystem, immune disorder driven by inflammatory processes, characterized by skin and joint manifestations, and may be associated with hearing loss. Aim To assess the hearing function in patients with psoriasis and if psoriasis could cause sensorineural hearing loss (SNHL). Patients and methods A total of 50 patients with psoriasis and 50 apparently healthy controls matched for age and sex were included in a cross-sectional comparative study between May 2017 and April 2018. Medical history of patients was taken. Demographics, type of psoriasis, and disease severity evaluated by PASI score were assessed. All patients who were included in this study provided a complete history and audiological history. All patients underwent otoscopic examination, pure tone audiometry, speech audiometry, and immittancemetry including tympanometry and acoustic reflexes. Results There was no statistically significant difference in age or sex for patients with psoriasis and t...
Otolaryngology Open Access Journal, 2021
Objective: To determine the contribution of otoendoscopy in the surgical management of atelectati... more Objective: To determine the contribution of otoendoscopy in the surgical management of atelectatic ear to improve clinical and audiological results. Methods and Materials: Thirty eight ears in 24 patients with middle ear atelectasis and intact ossicular chain were randomly assigned into 2 groups: Group I included 27 ears who were underwent endoscopic T- tube insertion and Group II included 11ears who were underwent endoscopic cartilage tympanoplasty. Assessment of hearing was performed for all cases preoperatively, 3 months postoperatively. Statistical analysis used: The analysis of the data was carried out using the IBM SPSS 20.0 statistical package software. Data were expressed as mean and standard deviation for quantitative measures in addition to both number and percentage for categorized data. Chi-square test or Fisher’s exact test were used to compare categorical variables. A P-value less than 0.05 was considered to be statistically significant. Results: There is significant p...
The Egyptian Journal of Otolaryngology, 2021
Various grafting materials and different techniques have been used for myringoplasty. The aim of ... more Various grafting materials and different techniques have been used for myringoplasty. The aim of the study was to compare the result of tympanoplasty in patients with safe-type chronic suppurative otitis media using periosteum versus tragal cartilage with perichondrium grafts through pre- and postoperative clinical and audiological evaluation. There was statistically significant difference for mean air-bone gap for group A (23.4 dB ± 0.03 SD) when compared to group B (19.4 dB ± 4.2 SD) with P value 0.103. Also, there was statistically significant difference in the hearing gain in group A after 6 months (25.53 dB ± 6.26 SD) when compared to group B (19.63 dB ± 9.76 SD) and the P value was 0.003. Graft taken was superior in the periosteal group (95%), compared to the cartilage grafts (90%). Tympanoplasty with periosteal graft showed better hearing results and high rates of graft taken than tragal cartilage grafts.
Integration, the VLSI Journal, 2004
Repeaters are often used to drive high impedance interconnects. These lines have become highly in... more Repeaters are often used to drive high impedance interconnects. These lines have become highly inductive and can affect signal behavior. The line inductance should therefore be considered in determining the optimum number and size of the repeaters driving a line. The optimum repeater system uses uniform repeater insertion in order to achieve the minimum propagation delay. A tradeoff exists, however, between the transient power dissipation and the minimum propagation delay in sizing long interconnects driven by the optimum repeater system. Optimizing the line width to achieve the minimum power delay product, however, can satisfy current high speed, low-power design objectives. A reduction in power of 65% and delay of 97% is achieved for an example repeater system. The Power-Delay-Area-Product (PDAP) criterion is introduced as an efficient technique to size the interconnect within a repeater system. A reduction in buffer area of 67% and interconnect area of 46% is achieved based on the PDAP.
Objectives: The aim of this work was to evaluate the residual hearing in children with sensorineu... more Objectives: The aim of this work was to evaluate the residual hearing in children with sensorineural hearing loss and absent ABR waves by ASSR to select the appropriate way for intervention, either the use of a hearing aid or cochlear implant. Patients and methods: Forty children (80 ears) were included in this study in the period from May 2019 up to April 2020. All children had complete detailed history taking, otoscopic examination, immittancemetry, hearing assessment to get an accurate frequency specific threshold with play audiometry, behavioral observation audiometry, and evoked audiometry, including ABR, TEOAEs, and ASSR. Results: Forty hearing impaired children with ages ranged from 1 to 5 years old, 22 were males, and 18 were female. ASSR response was obtained from 53 ears, and 27 ears showed no response. The ASSR showed a better response at the low-frequency region when compared to the high-frequency regions but with no statistically significant difference. Conclusions: The...
Uploads
Papers by Mohamed M Elmoursy