Abstract
(a) Hemorrhage in dogs (to 45-50 mm Hg) was associated with a 10-fold increase in plasma renin activity (PRA) which remained elevated throughout the time-course of shock including the irreversible (decompensation) stage. The presence of angiotensin II (AII) in arterial blood was demonstrated by the bloodbathed organ technique and confirmed by blockade with specific AII antagonists (cysteine8-AII or isoleucine8-AII). The contribution of AII to systemic peripheral resistance during hemorrhage shock in dogs was established by administering AII antagonists which immediately cause a further fall in blood pressure.
Authors
Barbara A. Jakschik, Garland R. Marshall, Janet L. Kourik, Philip Needleman
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