RESUMO
INTRODUCTION: Hearing loss level admitted for acquisition of Group 2 driving licences is actually 35%, but this measurement is not standarized. METHODS: In 35 drivers with Group 2 licence bearing of hearing loss, it was measured in the usual way -considering threshold as an average-, and also in accordance with valid legislation, which considers deafness when hearing thresholds are under 25 dB in each tone. RESULTS: Binaural hearing loss average was 41.3+/-6.3% for the first model, and 30.7+/-10.2% for the second. There was a good correlation between the two models by mean of lineal regression (y=1.4785x-30.382; R2=0.8467). CONCLUSIONS: In Group 2 licences, hearing loss average must be standarized in its quantifyng technique, because there is a wide difference in the results, depending on the model used to measure. In our country there are rules and regulations about quantifying for disable people, valid for establishing deafness measurement patterns in vehicle driving too.
Assuntos
Condução de Veículo/legislação & jurisprudência , Transtornos da Audição/diagnóstico , Licenciamento/legislação & jurisprudência , Adulto , Audiometria/métodos , Limiar Auditivo/fisiologia , Transtornos da Audição/fisiopatologia , Humanos , EspanhaRESUMO
Introducción: La hipoacusia permitida para obtener licencias de conducción del Grupo 2 es del 35%, pero su medida no está estandarizada. Métodos: En 35 conductores hipoacúsicos con licencias del Grupo 2 se evaluó esta pérdida de forma habitual, equiparando umbral a porcentaje, y con arreglo a la legislación vigente, que considera hipoacusia descensos superiores a 25 dB en cada frecuencia. Resultados: La pérdida binaural media fue del 41,3±6,3% en el primer método, y del 30,7±10,2% en el segundo. Ambos modelos se correlacionaron bien por la recta de regresión lineal de ecuación y=1,4785x-30,382, con R2=0,8467. Conclusiones: En los permisos del Grupo 2, el grado de hipoacusia observado entre conductores debe ser estandarizado en su forma de cuantificación ya que, según el modelo, el porcentaje de hipoacusia varía ampliamente. Existe un reglamento sobre cuantificación de minusvalías en nuestro país, válido para marcar la medida de sordera también en la conducción de vehículos
Introduction: Hearing loss level admitted for acquisition of Group 2 driving licences is actually 35%, but this measurement is not standarized. Methods: In 35 drivers with Group 2 licence bearing of hearing loss, it was measured in the usual way -considering threshold as an average-, and also in accordance with valid legislation, which considers deafness when hearing thresholds are under 25 dB in each tone. Results: Binaural hearing loss average was 41.3±6.3% for the first model, and 30.7±10.2% for the second. There was a good correlation between the two models by mean of lineal regression (y=1.4785x-30.382; R2=0.8467). Conclusions: In Group 2 licences, hearing loss average must be standarized in its quantifyng technique, because there is a wide difference in the results, depending on the model used to measure. In our country there are rules and regulations about quantifying for disable people, valid for establishing deafness measurement patterns in vehicle driving too
Assuntos
Humanos , Exame para Habilitação de Motoristas/legislação & jurisprudência , Audição , Condução de Veículo/normas , Audiometria , Limiar Auditivo/classificação , Transtornos da Audição/diagnósticoRESUMO
INTRODUCTION: Wide studies and substantial controversies build on utilization of actual mobile phones and appearance of systemic disorders or even tumours, but there is no knowledge about an eventual involvement on early hearing loss. PATIENTS AND METHODS: In a group of three hundred and twenty-three healthy and normoacoustic volunteers who were usual costumers of mobile phones an audiometric evaluation was made at the beginnig of its use and three years later, inquiring about the periods of time per day and year employed on direct contacts with phone. A healthy and normoacoustic control group of non users was studied too. RESULTS: Cases carried out 24.3 +/- 8.2 active contacts, reaching 50.4 +/- 27.8 days of mobile phone employment in three years. Audiometric curve was similar in cases and controls at the beginning of the study. After this follow-up, cases showed an increase on hearing threshold between 1 and 5 dB HL more than controls in speech tones (p<0.001). Moreover, there was a trend to correlate time of phone use to hearing impairment, but this finding did not result statistically significative. CONCLUSIONS: Frequent management of mobile phones in a middle period of time allows to detect a mild hearing loss, but the cause of this disorder keeps unclear.
Assuntos
Telefone Celular , Campos Eletromagnéticos/efeitos adversos , Audição , Adulto , Audiometria de Tons Puros , Feminino , Humanos , MasculinoRESUMO
Hearing loss must be easily calculated by mean of the rules of actual legislation on handicap. It is just necessary to know the hearing thresholds for 500, 1000, 2000 and 4000 Hz tones. Calculation of a linear regression equation allows to obtain quickly hearing loss average from these thresholds.
Assuntos
Perda Auditiva/diagnóstico , Audiometria , Humanos , Modelos Lineares , Fatores de TempoRESUMO
Introducción: Existen amplios estudios e importantes controversias sobre el empleo de los actuales teléfonos móviles y eventuales afecciones sistémicas o aparición de tumores, pero no se conoce apenas sobre su posible implicación en la generación precoz de hipoacusia. Pacientes y métodos: En 323 voluntarios sanos y normoacúsicos usuarios habituales de telefonía móvil se efectuó evaluación audiométrica al inicio del empleo del aparato y a los tres años del mismo, así como una encuesta sobre el tiempo aproximado de uso diario y anual que efectuaban del sistema. Un grupo control sano y normoacúsico no usuario de telefonía móvil fue igualmente estudiado. Resultados: Los individuos estudiados efectuaron 24,3±8,2 contactos activos entre llamadas realizadas y recibidas, lo que supuso un total de 50,4±27,8 días de empleo del teléfono móvil en tres años. La gráfica audiométrica en casos y controles fue similar al inicio del estudio. En el seguimiento a tres años los casos mostraron una elevación del umbral de audición por vía aérea entre 1 y 5 dB HL más que los controles en las frecuencias conversacionales (p<0,001), aunque no se observó pérdida auditiva. Existió además una tendencia a correlacionar el tiempo de contacto directo con el teléfono y el deterioro en la audición, pero este hallazgo no resultó estadísticamente significativo. Conclusiones: El empleo de telefonía móvil entre usuarios frecuentes a medio plazo permite detectar ligeras pérdidas de audición no observadas en no usuarios, si bien el motivo último de este desorden auditivo no queda demostrado con los datos obtenidos
Introduction: Wide studies and substantial controversies build on utilization of actual mobile phones and appearance of systemic disorders or even tumours, but there is no knowledge about an eventual involvement on early hearing loss. Patients and methods: In a group of three hundred and twenty-three healthy and normoacoustic volunteers who were usual costumers of mobile phones an audiometric evaluation was made at the beginnig of its use and three years later, inquiring about the periods of time per day and year employed on direct contacts with phone. A healthy and normoacoustic control group of non users was studied too. Results: Cases carried out 24.3±8.2 active contacts, reaching 50.4±27.8 days of mobile phone employment in three years. Audiometric curve was similar in cases and controls at the beginning of the study. After this follow-up, cases showed an increase on hearing threshold between 1 and 5 dB HL more than controls in speech tones (p<0.001). Moreover, there was a trend to correlate time of phone use to hearing impairment, but this finding did not result statistically significative. Conclusions: Frequent management of mobile phones in a middle period of time allows to detect a mild hearing loss, but the cause of this disorder keeps unclear
Assuntos
Masculino , Feminino , Adulto , Humanos , Telefone Celular/estatística & dados numéricos , Perda Auditiva/etiologia , Transtornos da Audição/etiologia , Audiometria , Estudos de Casos e Controles , Campos Eletromagnéticos/efeitos adversosRESUMO
La pérdida auditiva puede ser fácilmente calculada mediante las pautas referidas en la legislación vigente sobre minusvalías. Basta conocer los umbrales auditivos en las frecuencias en 500, 1000, 2000 y 3000 Hz. La obtención de una ecuación de regresión lineal permite conocer rápidamente el porcentaje de pérdida auditiva a partir de estos umbrales
Hearing loss must be easily calculated by mean of the rules of actual legislation on handicap. It is just necessary to know the hearing thresholds for 500, 1000, 2000 and 4000 Hz tones. Calculation of a linear regression equation allows to obtain quickly hearing loss average from these thresholds
