title: Is there evidence of early vascular disease in patients with obstructive sleep apnoea without known comorbidities? Preliminary findings.
abstract: We evaluated early atherosclerotic lesions in 20 non-smokers with newly diagnosed Obstructive Sleep Apnoea (OSA) and without known comorbidities by measuring common carotid artery intima media thickness (CCA-IMT), transcranial Doppler ultrasound (TCD), and ankle brachial index (ABI). These were compared with 20 healthy age- and BMI-matched controls. In OSA patients, CCA-IMT was not significantly higher vs. controls (0.74±0.17 vs. 0.66±0.12 mm, p=0.201) and it was positively correlated with neck circumference (r=0.466, p=0.039), arousal index (r=0.663, p=0.001), gamma-glutamyl transpeptidase activity (r=0.474, p=0.035) while it was negatively correlated with Forced Expiratory Volume in 1 sec (r=-0.055, p=0.012). No difference was noted between patients and controls in terms of vascular stenosis on TCD examination, while asymptomatic peripheral artery disease was found in one patient with OSA. In conclusion, OSA patients without known comorbidities exhibit a non-significant increase in CCA-IMT without further evidence of vascular disease, but additional experience in a larger patient series is needed.
authors.affiliation: Department of Pneumonology, Medical School, Democritus University of Thrace, Alexandroupolis, Greece.
authors.forename: P
authors.initials: P
authors.lastname: Steiropoulos
authors.forename: C
authors.initials: C
authors.lastname: Bogiatzi
authors.forename: K
authors.initials: K
authors.lastname: Archontogeorgis
authors.forename: E
authors.initials: E
authors.lastname: Nena
authors.forename: M
authors.initials: M
authors.lastname: Xanthoudaki
authors.forename: P
authors.initials: P
authors.lastname: Boglou
authors.forename: A
authors.initials: A
authors.lastname: Tzouvelekis
authors.forename: N
authors.initials: N
authors.lastname: Papanas
authors.forename: G
authors.initials: G
authors.lastname: Tsivgoulis
authors.forename: D
authors.initials: D
authors.lastname: Bouros
keywords: Ankle-Brachial Index; Atherosclerosis; Intima-Media Thickness; Obstructive Sleep Apnoea; Transcranial Doppler; Vascular disease
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