Circulation, Vol 59, 632-636, Copyright © 1979 by American Heart Association
DL Eckberg
Carotid baroreflex function was assessed in 10 normotensive young men and
20 age-matched subjects with borderline hypertension (successive blood
pressures above and below 140/90 mm Hg) by measuring sinus node responses
to brief neck suction. Subjects with borderline hypertension were divided
into two equal groups according to their average systolic arterial
pressures. Baroreflex responses were reset to function at higher pressure
levels than normal in subjects with mild borderline hypertension, but
reflex sensitivity was normal. Responses were also reset in subjects with
more severe borderline hypertension, but reflex was subnormal. The results
suggest that a gradation of baroreflex responsiveness exists among patients
classified as having borderline hypertension: Subnormal responsiveness was
found in those subjects whose resting average systolic arterial pressure
was greater than or equal to 140 mm Hg.
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Carotid baroreflex function in young men with borderline blood pressure elevation
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