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ARTICLE |

On Resetting of "Barostats" in Hypertensive Patients

Richard H. Thurm, MD; William M. Smith, MD
JAMA. 1967;201(5):301-304. doi:10.1001/jama.1967.03130050035010.
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Approximately ten years ago, it was shown that when hypertension was induced in dogs by a Goldblatt clamp, the carotid sinus was reset, becoming insensitive to the elevated pressure. Is it then conceivable that antihypertensive therapy may result in a lowering of this "barostat" setting, permitting discontinuation of therapy? The US Public Health Service Cooperative Study of Hypertension provided an opportunity to evaluate this question. Sixty-nine "responders" to various antihypertensive agents had their medications discontinued after an average response period of more than two years, with uninterrupted recordings of the pressure at home. Twenty-five patients remained responders (average diastolic pressure below 90 mm Hg) for at least five months. Of this group, nine required reinstitution of therapy, 5 to 24 months later, due to the gradual rise of their diastolic pressures.

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