1) La descarga del recurso depende de la página de origen
2) Para poder descargar el recurso, es necesario ser usuario registrado en Universia


Opción 1: Descargar recurso

Detalles del recurso

Descripción

Polysomnographic signals are usually recorded from patients exhibiting symptoms related to sleep disorders such as obstructive sleep apnea (OSA). Analysis of polysomnographic data allows for the determination of the type and severity of sleep apnea or other sleep-related disorders by a specialist or technician. The usual procedure entails an overnight recording several hours long. This paper presents a methodology to help with the screening of OSA using a 5-min oronasal airway pressure signal emanating from a polysomnographic recording during the awake period, eschewing the need for an overnight recording. The clinical sample consisted of a total of 41 subjects, 20 non-OSA individuals and 21 individuals with OSA. A signal analysis technique based on the Hilbert-Huang transform was used to extract intrinsic oscillatory modes from the signals. The frequency distribution of both the first mode and second mode and their sum were shown to differ significantly between non-OSA subjects and OSA patients. An index measure based on the distribution frequencies of the oscillatory modes yielded a sensitivity of 81.0% (for 95% specificity) for the detection of OSA. Two other index measures based on the relation between the area and the maximum of the 1st and 2nd halves of the frequency histogram both yielded a sensitivity of 76.2% (for 95% specificity). Although further tests will be needed to test the reproducibility of these results, the proposed measures seem to provide a fast method to screen OSA patients, thus reducing the costs and the waiting time for diagnosis.

Pertenece a

IC-online Institutional Repository of Scientific Information of the Polytechnic Institute of Leiria  

Autor(es)

Caseiro, P. -  Fonseca -  Pinto, Rui -  Andrade, A. - 

Id.: 71523107

Idioma: eng  - 

Versión: 1.0

Estado: Final

Palabras claveROC curve - 

Tipo de recurso: article  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: closedAccess

Requerimientos técnicos:  Browser: Any - 

Fecha de contribución: 12-jul-2018

Contacto:

Localización:
* 10.1016/j.medengphy.2010.01.008

Otros recursos de la mismacolección

  1. A quantitative approach for measuring the degree of flexibility of business process models Purpose The purpose of this paper is to measure the flexibility of business process models. The auth...
  2. On the influence of time-series length in EMD to extract frequency content : simulations and models in biomedical signals In this paper, fractional Gaussian noise (fGn) was used to simulate a homogeneously spreading broadb...
  3. A pixel-based complexity model to estimate energy consumption in video decoders The increasing use of HEVC video streams in diverse multimedia applications is driving the need for...
  4. Towards 5G : performance evaluation of 60 GHz UWB OFDM communications under both channel and RF impairments Detailed analysis on the impact of RF and channel impairments on the performance of Ultra-Wideband (...
  5. A 2D ray-tracing based model for wave propagation through forests at micro-and millimeter wave frequencies This paper proposes the extension of a 2-D ray-tracing-based model for radiowave propagation in the ...

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.