Relación entre la circunferencia del cuello y parámetros polisomnográficos en pacientes con síndrome de apnea obstructiva del sueño

Introduccion: El examen fisico no ha demostrado una prediccion diagnostica significativa en la apnea obstructiva del sueno (AOS). Aunque la polisomnografia es el estandar de oro, sus costos y disponibilidad la hacen dificil de realizar en algunos casos; asi, es importante encontrar otras herramientas que brinden una aproximacion referente a la severidad de la AOS. Objetivo: Establecer la relacion entre la circunferencia del cuello y los parametros polisomnograficos. Metodos: Estudio longitudinal, prolectivo, observacional, analitico en una cohorte prospectiva. Se reclutaron pacientes con sospecha de AOS en la consulta de Otorrinolaringologia; se les practico polisomnografia y medicion de la circunferencia del cuello (CC). Se realizo prueba T para muestras independientes y parametros descriptivos en el analisis estadistico. Resultados: Se evaluaron 141 pacientes, 95 hombres (67%); CC, 30-59 cm; saturacion minima de oxigeno, 35-91%; saturacion promedio con rango de 65-96%; indice de apnea-hipopnea, 0,6-173 eventos/hora. Se encontraron diferencias significativas, p Introduction: Physical assessment hasn't shown a very strong predictive severity diagnostic value in the obstructive sleep apnea (OSA). Polysomnography is the gold standard diagnostic tool, but it is expensive and difficult to get it in some cases. Therefore it is important to find other diagnostic studies that may give us an approximation to the severity of OSA. Objective: To establish the relationship between neck circumference and polysomnography parameters. Methods: This was a longitudinal - observational and analytic study in a population-based prospective and prolective cohort. We collected the patients with suspicion of OSA, in the Otolaryngology clinics; they were assessed with the neck circumference measure and diagnostic Polysomnography. We determined the Independent samples T- Test, and the descriptive parameters in the statistical analysis. Results: We evaluated 141 patients, 95 males (67,4%), neck circumference (NC) range: 30 – 59 cm; minimal oxygen saturation range: 35– 91% with a mean of 72%; mean oxygen saturation range: 65 – 96% with a mean of 88,9%; apnea hipopnea index (AHI) range: 0,6 – 173 events/hour with a mean 52,6 events/hour. There is a statistical significance p value lesser than 0,05 between the NC greater than 43 cm and NC lesser than 43 cm group, in these parameters: minimal saturation, mean saturation and AHI. Conclusion: The NC greater than 43 cm was associated with the worse results in the following polysomnography parameters: minimal saturation, mean saturation and AHI. These findings may give us an association between NC and the severity of the OSA...