VARIATION IN MEAN ARTERIAL PRESSURE AND ITS HEMODYNAMIC COMPONENTS DURING 24-HOUR AMBULATORY PULSE WAVE ANALYSIS: IMPACT OF AGE, RACE, AND GENDER.

Covariance analysis can be used with 24-hr ambulatory PWA to analyze BP and hemodynamic variability in everyday life. Within-individual total varMAP is related to varTVR > varHR > varSV but between-individual factors also affect these trends, including greater influence of varTVR in males and blacks, varHR in younger people, and varSV in younger people and women. HR varies inversely with SV and SVR suggesting counter-regulation. Diagnostic subclassifications or treatment modifications for variation extremes [e.g. vasodilators (TVR), beta-blockers (HR), or diuretics (SV)] may be possible.