Clinical phenotypes of patients with obstructive sleep apnea-hypopnea syndrome: a cluster analysis

Abstract

To the Editor: Obstructive sleep apnea-hypopnea syndrome (OSAHS) is a common sleep-disordered breathing disease with a range of harmful sequelae. As a syndrome related to multiple systems, the clinical presentation of OSAHS is characterized by a large heterogeneity. At the World Sleep 2019 conference, a series of cluster analyses on the Icelandic sleep apnea cohort were introduced in detail. However, data from China are missing due to less relevant studies. Furthermore, although the relationship between OSAHS and cognitive impairment was confirmed in the 1980s, all variables assessing cognitive function have not yet been explored.