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. 2014 May 3;16(6):459–466. doi: 10.1111/jch.12327

Figure 4.

Figure 4

Association between the oxygen desaturation index and sleep blood pressure (BP) measured by home information technology‐based trigger sleep BP monitoring in a hypertensive patient with obstructive sleep apnea syndrome. Each plot shows the BP data and oxygen desaturation index of 20 nights at baseline and of 25 nights after nighttime dosing of nifedipine (40 mg/d). SBP indicates systolic blood pressure. Mean sleep SBP=the average of sleep BPs measured only by the fixed‐interval (30 minutes) function. Hypoxia‐peak sleep SBP=maximum SBP measured by the oxygen‐triggered function.