Arousal index as a marker of carotid artery atherosclerosis in patients with obstructive sleep apnea syndrome

Sleep & Breathing = Schlaf & Atmung
Mayumi SuzukiMasatoshi Kawana

Abstract

It was shown in a previous cohort study that men with internal carotid artery (ICA) plaque, defined as focal wall thickness of ≥ 1.5 mm, had a threefold higher risk of stroke than those without plaque. We examined the relationship between arousal indices and sleep stages in patients with obstructive sleep apnea syndrome (OSAS) and carotid atherosclerosis. Carotid atherosclerosis severity was evaluated using the maximal carotid wall intima-media thickness of the ICA (ICA-maxIMT) and plaque in 83 patients with OSAS. The ICA-maxIMT values were positively correlated with the apnea hypopnea index (AHI) (ρ = 0.294, P = 0.007), arousal index (ρ = 0.289, P = 0.008), oxygen desaturation index (ρ = 0.298, P = 0.006), percentage of visually scored total sleep time spent in nocturnal oxygen saturation < 90% (SpO2 < 90%) (ρ = 0.246, P = 0.025), and the percentage of visually scored total sleep time spent in non-REM sleep stage 1 (ρ = 0.326, P = 0.003) and were negatively correlated with the percentage of visually scored total sleep time spent in non-REM sleep stages 2 and 3. Arousal index, diabetes mellitus, and age were found to be independent predictors of ICA plaque presence (OR 1.052, P = 0.003; OR 8.705, P = 0.026; OR 1.064, P = 0.023,...Continue Reading

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Citations

Aug 17, 2019·Frontiers in Neurology·Kyoo Ho ChoYoung Dae Kim
Mar 10, 2020·Indian Journal of Critical Care Medicine : Peer-reviewed, Official Publication of Indian Society of Critical Care Medicine·Pureepat ArttawejkulNaricha Chirakalwasan
Jun 16, 2021·Journal of Stroke and Cerebrovascular Diseases : the Official Journal of National Stroke Association·Qin ChenChun-Feng Liu

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