Circulatory and renin responses in man to unilateral reduction of the renal perfusion pressure

M. D. Guazzi, C. Fiorentini, M. T. Olivari, A. Bartorelli, F. Magrini, C. Biancardi

Research output: Contribution to journalArticle

Abstract

This study is concerned with the mechanisms of human renovascular hypertension. Unilateral parital occlusion of renal artery was accomplished using a balloon-tipped catheter for occlusive angiography in seven normotensive and 17 primary hypertensive subjects. The renin and circulatory responses were studied during a 60 min reduction of the renal perfusion pressure (RPP) by 50% of control. This stimulus was considered to be safe and strong enough to produce a three to four-fold rise in plasma renin activity. It was observed that: systemic (arterial) renin was significantly raised at 5 min, reached a peak at 15 min and continued to be significantly higher than the baseline until the occlusion was removed; venous renin and venous arterial difference on the occluded side became elevated after the stimulus and remained so for the duration of the occlusion; renin release from the contralateral kidney became partially inhibited; in no case did systemic arterial pressure, heart rate or cardiac output change during the studies: renin and circulatory patterns were similar in normotensive and hypertensive subjects. It is concluded that in humans unilateral RPP reduction duplicates the renin pattern of the Goldblatt kidney, but does not duplicate the circulatory response. This evidence applies to a 1 h renal artery occlusion and does not exclude the possibility that renin may have a role in a rise in blood pressure following renal artery stenosis of longer duration.

Original languageEnglish
Pages (from-to)637-642
Number of pages6
JournalCardiovascular Research
Volume15
Issue number11
Publication statusPublished - 1981

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Occlusion
Renin
Arteries
Perfusion
Kidney
Pressure
Angiography
Catheters
Balloons
Blood pressure
Plasmas
Cardiac Output
Stenosis
Hypertension
Balloon
Blood Pressure
Heart Rate
Renal Artery
Baseline
Fold

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Statistics, Probability and Uncertainty
  • Applied Mathematics
  • Physiology (medical)
  • Physiology

Cite this

Circulatory and renin responses in man to unilateral reduction of the renal perfusion pressure. / Guazzi, M. D.; Fiorentini, C.; Olivari, M. T.; Bartorelli, A.; Magrini, F.; Biancardi, C.

In: Cardiovascular Research, Vol. 15, No. 11, 1981, p. 637-642.

Research output: Contribution to journalArticle

Guazzi, M. D. ; Fiorentini, C. ; Olivari, M. T. ; Bartorelli, A. ; Magrini, F. ; Biancardi, C. / Circulatory and renin responses in man to unilateral reduction of the renal perfusion pressure. In: Cardiovascular Research. 1981 ; Vol. 15, No. 11. pp. 637-642.
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