The contribution of hypoxia to the association between sleep apnoea, insomnia, and cardiovascular mortality in community-dwelling elderly with and without cardiovascular disease.

The article presents a study that explores whether nightly hypoxia contributed to the association between sleep-disordered breathing (SDB) and insomnia in community dwelling elderly with and without cardiovascular disease (CVD). The study included a total of 331 community-dwelling elderly aged 71-87 years underwent one-night polygraphic recordings. It suggests that SDB mediated by hypoxia in elderly with CVD can be associated with more insomnia and a worse prognosis.