obstructive sleep apnea as a risk factor for coronary artery disease

Background and objective: obstructive sleep apnea (osa) is frequent and in some degree it affects about 24% of male and 9% of female in middle age adults. this study aimed to assess the association between risk of osa and cad. materials and methods: this case-control study was performed among 184 patients with a history of coronary angiography in two catheter labs at hospitals in qom, iran. control group had normal or minimal coronary stenosis (<50%) and case group had 1, 2 or 3 coronary vessel disease. all the patients completed demographic and berlin questionnaires and then data were analyzed using spss version 16. results: mean (±sd) age of participants was 55.36 ± 10 years. a total of 119 (61.4%) patients were female. this study showed significant difference between risk of osa in patients with cad and those without cad (or=1.25), hypertension (or=10.4) and non-insulin dependent diabetes mellitus (or=2.12), but there were no correlation between risk of osa and ejection fraction less than 45% (p value=0.582). conclusions: osa can be considered as one of the important risk factors for cad.