with increased cardiovascular mortality. This increased risk may be attributable to more
extensive or unstable atherosclerotic plaques in subjects with OSA. We studied the effect of
chronic IH in atherosclerosis-prone mice. METHODS AND RESULTS: Apolipoprotein E-
deficient (ApoE−/−) mice fed a high cholesterol diet were exposed to 4 or 12 weeks of IH and
compared to intermittent air-exposed controls. At 4 weeks, IH increased plaque size in the …