Sleep & breathing = Schlaf & Atmung
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Patients with obstructive sleep apnea (OSA) have an increased risk of perioperative complications. ⋯ For patients undergoing endoscopy procedures under conscious sedation, the presence of OSA does not clearly increase the risk of cardiorespiratory complications.
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The aims of the present study are to determine whether there is an obstructive sleep apnea (OSA) subgroup presenting with sawtooth sign on the spirometric flow-volume curve, and to identify the clinical importance of the sawtooth sign in these patients. ⋯ As an OSA subgroup, the OSA patients with sawtooth sign may have more frequent and longer duration of obstructive apneas, longer duration time of oxygen desaturation, and greater risk for the coronary artery disease.