Obstructive sleep apnea-hypopnea syndrome (OSAHS) requires a thorough medical evaluation and diagnosis confirmation. as well as the estimation of its severity using diagnostic means. These conditions are fulfilled by the basal polysomnogram. which monitors sleep throughout the night; this is a standardized study that requires minimum quality parameters that must be met in all cases. https://www.markymarkscott.com/product-category/gold-collagen-ampoule-mask/