case_images: PMC3986113_01
case_images: Overnight polysomnogram.. Notes: This summary displays a sleep stage hypnogram, oxygen saturation during the study, apnea and hyponea events, and positive airway pressure settings. Note the continued oxygen desaturations associated with REM despite reduction in apnea and hypopnea events (the gray line indicates 88% saturation).. Abbreviations: REM, rapid eye movement; N1, Sleep Stage 1; N2, Sleep Stage 2; N3, Slow wave Sleep; OA, obstructive apnea; MA, mixed apnea; CA, central apnea; H, hypopnea.
case_images: copd-9-349Fig5.jpg
case_images: PMC3986113_01_copd-9-349Fig5.jpg
case_images: f5-copd-9-349
case_images: A polysomnogram was performed and showed evidence of OSA with significant desaturations as depicted in Figure 5.