Ngezinhloso zalesi sihloko, sizobhekisela ekulahlekeni kokuzwa kwezinzwa eziphansi (ukulahlekelwa kwezwa okubangelwa amangqamuzana omzimba wezinwele ezonakele). Lolu hlobo lokulahlekelwa kwezindlebe luthinta ama frequency 2000 Hz nangaphansi. Lezi yizindawo ezijulile. Ukulahleka kokuzwa kwe-frequency ukuzwa kuthiwa "yi-reverse slope audiogram " ngoba umuntu onokulahlekelwa ukuzwa kwe-frequency angase azwe imisindo emazingeni aphezulu.
Ngenxa yalokho, abantu abanokulahlekelwa ukuzwa okuvamile kwevama kaningi bangakwazi ukuqonda kahle inkulumo.
Izimbangela Zokulahlekelwa Ukulahlwa Kwama-Low-Frequency
I-Kresge Hearing Research Institute ibike ukuthi ukuguqulwa kwesakhi sofuzo se-WFS1 (i-Wolfram Syndrome gene) kungabangela ukulahlekelwa kokuzwa kwe-frequency sensority. Ukuguqulwa kwezinto okubizwa ngokuthi i-Wolfram Syndrome 1. Ezinye izimbangela zokulahleka kokuzwa kwezindlebe ezincane zifaka uMantiini dysplasia (i-cochlear malformation), ukulahleka kokuzwa okungazelelwe , isifo sikaMeniere , ukutheleleka kwegciwane, ukwehluleka kwenhliziyo, kanye nezinguquko ekucindezelweni okubangela i-fistula (njenge-fistula ukucindezeleka komfutho wegazi ophezulu) noma ngemuva kwe-anesthesia yomgogodla.
Ukuhlonza ukulahlekelwa kwe-Low-Frequency Hearing Loss
Ukulahleka kokuzwa kwe-frequency ukunciphisa kungase kungabikho ngoba kubonakala kungenayo izimpawu eziningi. Imisindo engezansi engezansi ayinalo ulwazi oluthe xaxa njengomsindo emazingeni aphezulu ukuze abantu abanokuzwa phakathi naphakathi kwamaferensi aphakeme bangasebenzisa lokho abakutholayo kulawo ma fréquences ukwenza lokho abangakuzwayo emazingeni aphansi, ngaleyo ndlela "bahlasele "ukulahlekelwa kwezindlebe.
Umuntu onokulahlekelwa kokuzwa okuvame ukuvama ngokuvamile uzokuthuthukisa inkulumo nolimi ngokujwayelekile. Enye yezinkomba ezimbalwa ukulahlekelwa ukuzwa okuphansi kokuvama ukuthi umuntu unzima ukuzwa ngamaqembu noma endaweni enomsindo. Ezimweni eziningi, lolu hlobo lokulahlekelwa kwezindlebe luzoqaphela ngesikhathi sokuhlola ukuzwa njalo.
Uma kunomlando womndeni wokulahleka kokuzwa kwe-frequency hearing, kufanele ubone isazi se-audiologist ukuhlola okuphelele kokuzwa futhi ungathembeki kuphela ekuhlolweni kokuzwa.
Uziphatha Kanjani Ukulahlekelwa Kwama-Frequency Low Hearing?
Kuxhomeke kulokho okushiwo umuntu olahlekelwe ukuzwa. Kwezinye izimo, ukwelashwa kungase kungadingekile. Kunezinsiza ezizwakalayo zokuzwa ezingahle zisetshenziselwe ukukhuthaza amazinga aphansi ngaphandle kokukhulisa izindawo umuntu azizwa ngokujwayelekile. Okubaluleke nakakhulu, lezi zinsiza zokuzwa zinezici zokunciphisa umsindo kanye nama-microphones amaningi angase athuthukise ukuzwa ezimweni ezimnandi. Kukhona futhi izinketho ezifana nama-microphone ezikude. I-audiologist yakho izokwazi ukukuqondisa ekukhetheni ubuchwepheshe obufanele.
> Imithombo:
Kuk, Francis, Ph.D., Denise Keenan, MA, noCarl Ludvigsen, MS. Ukushintsha Ngezikhathi: Ukulawula Ukulahlekelwa Kwamazwi Aphansi-Ukuvama. Ukuzwa Ukubukeza NgoNovemba 2003. http://www.hearingreview.com/issues/articles/2003-11_04.asp.
Lesperance MM. I-WFS1 i-Gene Mutation kanye neDolymorphism Database. Ukulahlekelwa Okuphansi Kwamazwi Ephansi. I-Kresge Hearing Research Institute. I-Laboratory Genetic Laboratory.
Niskar AS, Kieszak SM, Holmes A, Esteban E, Rubin C, Brody DJ. Ukuqwashisa kokuzwa ukulahlekelwa phakathi kwezingane eminyakeni engu-6 kuya kweyengu-19 yobudala: Ucwaningo lweSithathu lwezeMpilo nezeZondlo. I-JAMA. 1998 Apr 8; 279 (14): 1071-5.
> Hain, T (2015). Ukulahleka Okuphansi Kwamazwi Ephansi Ukuzwa Ukulahlekelwa. Ukuzivocavoca nokulinganisela. http://www.dizziness-and-balance.com/disorders/hearing/low-frequency_snhl.html.
Kubuyekezwe nguMelissa Karp, Au.D.