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Vol. 36. Issue 8.
Pages 436-440 (September 2000)
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Vol. 36. Issue 8.
Pages 436-440 (September 2000)
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Evaluación de la somnolencia diurna excesiva en conductores profesionales con sospecha de síndrome de apnea obstructiva durante el sueño
Assessment of excessive daytime sleepiness in professional drivers suspected of obstructive sleep apnea syndrome
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C. Carmona Bernal1, F. Capote Gil, P. García López, A. Sánchez Armengol, J. Castillo Gómez
Unidad Médico-Quirúrgica de Enfermedades Respiratorias. Hospitales Universitarios Virgen del Rocío. Sevilla
G. Botebol Benhamou*
* Servicio de Neurofisiología Clínica. Hospitales Universitarios Virgen del Rocío. Sevilla
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La somnolencia diurna excesiva es un síntoma frecuente en el síndrome de apnea obstructiva durante el sueño, y puede ser causante de accidentes de tráfico. Este aspecto tiene especial importancia en los conductores profesionales, por la morbimortalidad y repercusión laboral que puede suponer. Hemos evaluado si la escala de somnolencia de Epworth (ESE) (medida subjetiva de la somnolencia diurna) se correlaciona bien con el test de latencia múltiple del sueño (TLMS) (medida objetiva de la somnolencia diurna). Además, hemos comparado ambos métodos con algunos parámetros de la polisomnografía (PLSG) (índice de apnea-hipopnea, índice de arousals y saturación de oxígeno mínima). Hemos estudiado a 55 conductores profesionales con sospecha de síndrome de apnea obstructiva durante el sueño. A todos se les aplicó la ESE y se les realizó una PLSG y un TLMS. Encontramos una correlación significativa, aunque no relevante, entre el grado de somnolencia diurna excesiva estimada mediante la ESE y la medida por el TLMS (r = –0,41; p = 0,002). Al comparar ambos métodos con la PLSG, tan sólo encontramos una correlación significativa, aunque muy débil, entre la ESE y el índice de arousals (r = 0,26; p<0,05). Según nuestros resultados, no está claro cuál es el mejor método para medir la somnolencia diurna excesiva en conductores profesionales con sospecha de síndrome de apnea obstructiva durante el sueño.

Palabras clave:
Síndrome de apnea obstructiva durante el sueño
Somnolencia diurna excesiva
Test de latencia múltiple del sueño
Escala de somnolencia de Epworth

Excessive daytime sleepiness is a common symptom of obstructive sleep apnea syndrome (OSAS) and can be a cause of traffic accidents, creating a problem of particular importance for professional drivers given the associated death, disability and professional repercussions. We assessed whether the Epworth sleepiness scale (ESS), which is a subjective measure of daytime sleepiness, correlates well with multiple sleep latency (MSL) testing, which gives an objective measure of daytime sleepiness. We also compared each method with the results of polysomnography (apnea-hypopnea index, arousal index and minimum oxygen saturation). We studied 55 professional drivers suspected of OSAS. All answered the ESS questionnaire and underwent polysomnographic and MSL testing. We found a significant, though not relevant, correlation between the degree of excessive daytime sleepiness estimated by the ESS and by MSL testing (r = -0.41; p = 0.002). A significant, though weak, correlation was found between the ESS score and the arousal index (r = 0.26; p<0.05). Our results do not clarify which method is best for measuring excessive daytime sleepiness in professional drivers suspected of OSAS.

Key words:
Obstructive sleep apnea syndrome
Excessive daytime sleepiness
Multiple sleep latency test
Epworth sleepiness scale
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