Key result
Prazosin normalized blood pressure while preserving renal hemodynamics, whereas propranolol normalized blood pressure but significantly reduced glomerular filtration rate and renal blood flow.
Why the study?
Do prazosin and propranolol alter renal hemodynamics differently in patients with essential hypertension?
RCT (n=12)
Do prazosin and propranolol alter renal hemodynamics differently in patients with essential hypertension?
In patients with essential hypertension, prazosin lowers blood pressure without compromising renal perfusion, unlike propranolol which significantly reduces renal hemodynamics.
Prazosin may preserve renal hemodynamics better than propranolol despite equivalent BP lowering; leaves open effects on long-term renal outcomes.
To evaluate renal hemodynamic changes during therapy of essential hypertension, we treated 12 essential hypertensives in crossover fashion, with 1 month each of placebo, prazosin, and propranolol alone. During prazosin treatment, blood pressure was normalized with preservation of glomerular filtration rate, renal plasma flow, and renal blood flow. Propranolol, however, normalized blood pressure with an associated significant decline in glomerular filtration rate, renal plasma flow, and renal blood flow. The potential mechanisms are discussed.
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O’Connor et al. (1979) conducted an RCT in Essential hypertension (n=12). Prazosin and propranolol vs. Placebo was evaluated on Renal hemodynamic changes (glomerular filtration rate, renal plasma flow, and renal blood flow). Prazosin normalized blood pressure while preserving renal hemodynamics, whereas propranolol normalized blood pressure but significantly reduced glomerular filtration rate and renal blood flow.
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