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Journal Article
Research Support, Non-U.S. Gov't
Relationship between diabetic retinopathy and sleep-disordered breathing.
American Journal of Ophthalmology 2009 June
PURPOSE: To clarify the relationships of sleep-disordered breathing (SDB) to nonproliferative diabetic retinopathy (NPDR) and proliferative diabetic retinopathy (PDR).
DESIGN: Cross sectional case-control study.
METHODS: Forty-eight consecutive NPDR and 118 PDR cases that had undergone surgery in our hospital were included in this study. Pulse oximetry was conducted during the night and the sleeping 4% oxygen desaturation index (ODI) (number of oxygen desaturation events/hour exceeding 4%) and mean SpO(2)% were calculated. If 4% ODI > 5 times/hour, SDB was diagnosed. The results were evaluated and compared between the 2 groups. In addition, these results and preoperative patient background factors were analyzed using multiple regression analysis to identify correlations with the diagnosis of PDR.
RESULTS: Twenty-nine percent of the NPDR and 48% of the PDR patients were diagnosed as having SDB. The incidence of SDB and the 4% ODI/hour value were significantly higher in the PDR than in the NPDR group (P = .003 and .03, respectively). Multiple regression analysis showed younger age and a higher 4% ODI value to be factors independently contributing to a diagnosis of PDR (age, standard regression coefficient = -0.34; t value = -4.44; P < .0001; 4% ODI, standard regression coefficient = 0.20; t value = 2.15; P = .03, correlation coefficient (R) = 0.43).
CONCLUSION: Our results suggest that, in diabetic retinopathy patients with nocturnal desaturation, reoxygenation caused by SDB may relate to the development of PDR.
DESIGN: Cross sectional case-control study.
METHODS: Forty-eight consecutive NPDR and 118 PDR cases that had undergone surgery in our hospital were included in this study. Pulse oximetry was conducted during the night and the sleeping 4% oxygen desaturation index (ODI) (number of oxygen desaturation events/hour exceeding 4%) and mean SpO(2)% were calculated. If 4% ODI > 5 times/hour, SDB was diagnosed. The results were evaluated and compared between the 2 groups. In addition, these results and preoperative patient background factors were analyzed using multiple regression analysis to identify correlations with the diagnosis of PDR.
RESULTS: Twenty-nine percent of the NPDR and 48% of the PDR patients were diagnosed as having SDB. The incidence of SDB and the 4% ODI/hour value were significantly higher in the PDR than in the NPDR group (P = .003 and .03, respectively). Multiple regression analysis showed younger age and a higher 4% ODI value to be factors independently contributing to a diagnosis of PDR (age, standard regression coefficient = -0.34; t value = -4.44; P < .0001; 4% ODI, standard regression coefficient = 0.20; t value = 2.15; P = .03, correlation coefficient (R) = 0.43).
CONCLUSION: Our results suggest that, in diabetic retinopathy patients with nocturnal desaturation, reoxygenation caused by SDB may relate to the development of PDR.
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