Please click here to obtain permission to reproduce this image.
Click on image to view larger version.
Figure 3 Sympathetic nerve activity increases through the obstructive apnea, resulting in marked vasoconstriction followed by increased systolic and diastolic blood pressure. Continuous positive airway pressure (CPAP) stabilizes both sympathetic activity and blood pressure surges. BP = blood pressure (mm Hg); OSA = obstructive sleep apnea; REM = rapid eye movement; RESP = respiration; SNA = sympathetic nerve activation. Adapted from Somers et al. (67) with permission.
|
