Hypercoagulability and Severe Obstructive Sleep Apnea

To the Editor I read with interest the study by Hong et al, which assessed the association between hypercoagulability and severe obstructive sleep apnea (OSA). The authors measured several coagulation tests, including platelet count, bleeding time, prothrombin time (PT) in seconds and as international normalized ratio, and activated partial thromboplastin time and their association with severity of OSA. They found that patients with moderate to severe OSA had elevated blood coagulability markers compared with healthy individuals.

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