Pathophysiology of experimental renovascular hypertension.
The genesis of renovascular hypertension follows a continuum from an acute to a chronic phase. Reduction in renal perfusion initiates renin release and angiotensin-mediated systemic vasoconstriction. Aldosterone secretion, sodium and water retention, and expansion of the extracellular volume ensue. Sustained hypertension is further maintained by interacting physiologic mechanisms including increased angiotensin II sensitivity, vasopressin, ouabain-like substance, the sympathetic nervous system, CNS mechanisms, autoregulation, and structural changes.
Nabel, EG; Gibbons, GH; Dzau, VJ
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