Spectral analysis of the systolic blood pressure signal in secondary hypertension: a method for the identification of phaeochromocytoma.


OBJECTIVE To seek in hypertensive patients rhythmic variations of the systolic blood pressure signal obtained by ambulatory blood pressure monitoring of any inherent cycle of intermediate value between 1 and 24 h. DESIGN Subjects (62 hypertensive, 39 normotensive) were evaluated by 24-h ambulatory blood pressure monitoring. The hypertensive group… (More)


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