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  • Title: Retinal vein occlusion and obstructive sleep apnea: a series of 114 patients.
    Author: Agard E, El Chehab H, Vie AL, Voirin N, Coste O, Dot C.
    Journal: Acta Ophthalmol; 2018 Dec; 96(8):e919-e925. PubMed ID: 30188014.
    Abstract:
    PURPOSE: Evaluate the prevalence of obstructive sleep apnea (OSA) in patients with retinal vein occlusion (RVO). METHODS: A prospective and controlled study including 114 patients from January to September 2016, who were divided into two groups: 69 patients with RVO (RVO+) and 45 controls (RVO-), matched for age, sex and disease. All the patients completed a simple questionnaire and the Epworth Sleepiness Scale and underwent a RUSleeping® (portable monitoring device and then continuously monitored the subject's respiration to detect respiratory events). In addition, all patients with RVO were administered OSA screening with a polysomnography (PSG) during an overnight stay in the hospital, which was analysed by a single sleep apnea specialist. RESULTS: Sleep apnea was suspected in 73.9% in the RVO group and 63% in the control group based on the simple questionnaire; 22% in the RVO group and 4.3% in the control group according to the Epworth Sleepiness Scale; 82.6% in the RVO group and 55.6% in the control group (p = 0.005) according to RUSleeping® . Multivariate logistic regression analysis (based on RUsleeping® ) confirmed that RVO was associated with OSA (adjusted odds ratio, 5.65, [1.60-19.92], p = 0.007). All patients in the RVO group were confirmed by PSG, and finally, 91.5% were diagnosed with moderate-to-severe OSA. Among the RVO+ patients, the mean apnea-hypopnoea index (AHI) was 42.2 events per hour (7.7-96.5). OSA was moderate in 22% patients and severe in 69.5% patients. There was no significant relationship between RVO severity and the PSG data variables. CONCLUSION: The systematic screening of OSA with the gold standard PSG found a high prevalence of OSA in patients with RVO. The OSA is probably a risk factor associated with RVO. Polysomnography remains the gold standard method; nevertheless, the RUsleeping® RTS portable monitoring device can assess the presence and severity of sleep apnea with a low failure rate and a single use, prior to PSG, which is less available in clinical practice. Further studies with larger samples are needed to clarify the association.
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