Abstract Funding Acknowledgements Type of funding sources: None. Purpose Sleep-disordered breathing (SDB) is prevalent in up to 50% patients undergoing atrial fibrillation (AF) ablation. Currently, it remains unclear whether all AF should be systematically screened for SDB, or pre-selection requiring screening can improved. We aimed 1) assess the accuracy STOP-Bang questionnaire as a tool detec...

PURPOSE OF REVIEW The purpose of this article is to review the screening tools available in the preoperative clinic for patients at risk of obstructive sleep apnea. RECENT FINDINGS Obstructive sleep apnea (OSA) is the most prevalent sleep disorder. An estimated 82% of men and 92% of women with moderate-to-severe sleep apnea have not been diagnosed. Patients with undiagnosed OSA may have incre...

In the paper, the bang-bang principle for a control system connected with a system of linear nonautonomous partial differential equations of hyperbolic type (the socalled Goursat-Darboux problem or continuous Fornasini-Marchesini problem) is proved. Some density result is also obtained.