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Figure 2 | Respiratory Research

Figure 2

From: Obstructive sleep apnea and vascular disease

Figure 2

Comparison of mean arterial pressure (MAP) and endothelin 1 (ET-1) in 22 patients with severe obstructive sleep apnea (OSA) before sleep at approximately 22:00 hours, before nasal continuous positive airways pressure (CPAP) therapy at approximately 02:00 hours, and on waking at approximately 07:00 hours after 5 hours of CPAP therapy. Measurements in control subjects without sleep apnea are shown on the right. Data are means ± SEM. Reproduced with permission from [21].

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