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    Wyświetlanie 1-5 z 5
    Tytuł:
    Interchangeability of three different methods of calculating Pure Tone Average in patients with vestibular schwannoma to assess the risk of surgery-related hearing loss
    Autorzy:
    Ochal-Choińska, Aleksandra
    Lachowska, Magdalena
    Kurczak, Katarzyna
    Niemczyk, Kazimierz
    Powiązania:
    https://bibliotekanauki.pl/articles/1397311.pdf
    Data publikacji:
    2020
    Wydawca:
    Index Copernicus International
    Tematy:
    acoustic neuroma
    audiometry
    hearing loss
    vestibular schwannoma
    Opis:
    Background: Patients with vestibular schwannoma (VS) most commonly present with hearing threshold reduction for high frequencies and a falling type of audiometric curve. However, it is doubtful whether all Pure Tone Averages described in the literature characterize patients with VS correctly, as the type of PTA which comprises higher frequencies may be more appropriate for hearing status assessment in those patients. Aim: The aim of this study was to analyze 3 common methods of calculating Pure Tone Averages (PTA1 – 500, 1000, 2000 and 3000 Hz; PTA2 – 500, 1000, 2000 and 4000 Hz; PTA3 – 500, 1000 and 2000 Hz) and to determine which of them is the most reliable for the assessment of VS patients. Material and Methods: The study group included 86 patients operated on due to vestibular schwannoma accessed via the middle cranial fossa. Results: Regarding the method of calculating Pure Tone Averages (PTA1, PTA2 and PTA3) identical or similar correlations were found between the preoperative values of Pure Tone Averages (PTA1, PTA2 and PTA3) and surgery-related hearing loss, as well as individual parameters of audiologic tests. Conclusions: Pure Tone Averages calculated according to 3 different methods (PTA1, PTA2, PTA3) may be used interchangeably in the assessment of hearing in VS patients.
    Źródło:
    Polish Journal of Otolaryngology; 2020, 74, 5; 11-16
    0030-6657
    2300-8423
    Pojawia się w:
    Polish Journal of Otolaryngology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Vertigo in cerebellopontine angle tumor Patients
    Autorzy:
    Zarębska-Karpieszuk, Paulina
    Bartoszewicz, Robert
    Pierchała, Katarzyna
    Niemczyk, Kazimierz
    Powiązania:
    https://bibliotekanauki.pl/articles/1401828.pdf
    Data publikacji:
    2015
    Wydawca:
    Index Copernicus International
    Tematy:
    acoustic neuroma
    vestibular schwannoma
    vertigo
    imbalance;cerebellopontine angle tumor;symptoms T
    Opis:
    Cerebellopontine angle tumors are a group of tumors that originate from the posterior cranial fossa. Most of them are acoustic neuromas arising from the Schwann cell sheath of the vestibular branch of VIII cranial nerve. Those benign tumors usually present with unilateral hearing loss (53–57%), tinnitus (79–82%), and vertigo/imbalance (18–50%). The objective of this study was documentation-based evaluation of 53 out of 96 patients that received surgical treatment in the ENT Department of Medical University in Warsaw during the period from May 2012 to May 2014, with special consideration of vertigo/imbalance in relation to other symptoms. Statictical analysis has shown larger frequency of vertigo/imbalance in patients with mild to moderate hearing loss and positive corelation between the largest diameter of the tumor and the vestibular deficit in VNG (videonystagmography). The corelation of vestibular deficit in VNG and imbalance symptoms was only estabilished in the group with intrameatal localization of the tumor (T1).
    Źródło:
    Polski Przegląd Otorynolaryngologiczny; 2015, 4, 4; 27-31
    2084-5308
    2300-7338
    Pojawia się w:
    Polski Przegląd Otorynolaryngologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New directions in molecular diagnostics and therapy of vestibular schwannomas
    Autorzy:
    Litwiniuk, Malgorzata
    Makuszewska, Maria
    Bartoszewicz, Robert
    Niemczyk, Kazimierz
    Powiązania:
    https://bibliotekanauki.pl/articles/1399284.pdf
    Data publikacji:
    2020
    Wydawca:
    Index Copernicus International
    Tematy:
    acoustic neuroma
    bevacizumab
    biological treatment
    microRNAs
    prognostic markers
    vestibular schwannoma
    Opis:
    The molecular basis for the formation and growth of vestibular schwannomas (VS) has been elucidated in the recent years. The main genetic and epigenetic aberrations, changes in gene expression and specific signaling pathways involved in pathogenesis of sporadic VS and neurofibromatosis type II (NF2) have been defined. These findings facilitated the search for prognostic markers in VS and potential targets for biological therapy. This publication summarizes the main directions of research in the field of molecular diagnostics and pharmacotherapy of VS based on biological agents.
    Źródło:
    Polski Przegląd Otorynolaryngologiczny; 2020, 9, 4; 55-59
    2084-5308
    2300-7338
    Pojawia się w:
    Polski Przegląd Otorynolaryngologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Tinnitus as the sole symptom of vestibular schwannoma – case report.
    Autorzy:
    Ochal-Choińska, Aleksandra
    Lachowska, Magdalena
    Zarębska- Karpieszuk, Paulina
    Powiązania:
    https://bibliotekanauki.pl/articles/1400524.pdf
    Data publikacji:
    2016
    Wydawca:
    Index Copernicus International
    Tematy:
    acoustic neuroma
    tinnitus
    hearing loss
    pure tone audiometry
    auditory evoked brainstem potentials
    vestibular evoked myogenic potentials
    Opis:
    In this paper, we present a case report of a 26-year-old patient who had been experiencing isolated unilateral tinni-tus for 2 months. Audiologic examinations, such as pure tone, speech and impedance audiometry, ABR and vestibular evoked myogenic potential (VEMP) showed no abnormalities. The videonystagmography (VNG) and computerized dynamic posturography (CDP) also showed no pathology. Magnetic Resonance Imaging (MRI) was the only test that confirmed the presence of the vestibular schwannoma in this patient. Conclusions: MRI should be considered in pa-tients suspected of having a vestibular schwannoma with unilateral tinnitus as the only symptom, despite normal au-diological test results (with no retrocochlear findings).
    Źródło:
    Polski Przegląd Otorynolaryngologiczny; 2016, 5, 2; 46-50
    2084-5308
    2300-7338
    Pojawia się w:
    Polski Przegląd Otorynolaryngologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Detailed insight into transtympanic electrocochleography (TT-ECochG) and direct cochlear nerve action potential (CNAP) for intraoperative hearing monitoring in patients with vestibular schwannoma – methodology of measurements and interpretation of results
    Autorzy:
    Pobożny, Izabela
    Lachowska, Magdalena
    Bartoszewicz, Robert
    Niemczyk, Kazimierz
    Powiązania:
    https://bibliotekanauki.pl/articles/1397350.pdf
    Data publikacji:
    2020
    Wydawca:
    Index Copernicus International
    Tematy:
    acoustic neuroma
    action potential
    cochlear nerve
    evoked response
    hearing loss
    Opis:
    Background: The aim was to present the methodology and interpretation of intraoperative hearing monitoring with simultaneous Transtympanic Electrocochleography (TT-ECochG) and direct Cochlear Nerve Action Potential (CNAP) measurements during vestibular schwannoma removal. Materials and Methods: Detailed methodology of measurements and interpretation of results are presented in three exemplary patients who underwent tumor removal via middle fossa approach (MFA) with the use of intraoperative monitoring of hearing with TT-ECochG and direct CNAP performed in real time. In addition, all responses were automatically recorded and stored along with surgical information and subjected to detailed analyses and calculation after surgery. Results: The following changes in TT-ECochG and direct CNAP responses were observed: Patient #1 – TT-ECochG and CNAP responses with minor, but transient, morphology changes (hearing was preserved); Patient #2 – CNAP responses changed significantly but, temporarily, from triphasic into biphasic responses later, with marked but partially reversible desynchronization of CNAP; changes in TT-ECochG responses were also observed but, at the end, returned to baseline (surgery-related deterioration of hearing); Patient #3 – irreversible changes of TT-ECochG and direct CNAP (complete loss of hearing). Conclusions: A combination of TT-ECochG and direct CNAP allows for real-time monitoring of auditory function during vestibular schwannoma resection and surgical manipulation which contribute to the risk of hearing loss. Therefore, the surgeon can be instantly informed about changes which could increase the possibility of preserving the patient’s hearing
    Źródło:
    Polish Journal of Otolaryngology; 2020, 74, 6; 1-8
    0030-6657
    2300-8423
    Pojawia się w:
    Polish Journal of Otolaryngology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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