Skip to main content
. Author manuscript; available in PMC: 2011 Jan 1.
Published in final edited form as: Curr Opin Nephrol Hypertens. 2010 Jan;19(1):51–58. doi: 10.1097/MNH.0b013e3283336ddb

Figure 1.

Figure 1

Circadian variation in blood pressure, heart rate, and concomitant activity is shown for a patient with kidney disease. The horizontal lines are the median estimating statistic of rhythm (MESOR). The circular inset shows the time of peak effect (acrophase) on a 24 hour clock. Acrophases for both systolic and diastolic BP are seen during the hours of sleep. Acrophases for heart rate and activity are seen between noon and 6 PM. Activity units are arbitrary and taken as the square root of the average activity 5 minutes prior to each blood pressure measurement.