Key result
Lowering blood pressure in hypertensive patients normalized aortic input impedance curves, but the pulsatile-to-mean power ratio remained higher, indicating greater pulsatile energy losses.
Why the study?
Does blood pressure manipulation alter aortic input impedance in normal subjects and hypertensive patients?
Population
25 subjects including normal subjects (n=13) and hypertensive patients (n=12)
Comparison
Blood pressure manipulation via angiotensin… vs Basal conditions and normal subjects
Design
Other
Authors
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Acute BP lowering may not restore normal pulsatile power dynamics; leaves open whether aortic stiffness requires targeted therapy.
Observational (n=25)
Does blood pressure manipulation alter aortic input impedance in normal subjects and hypertensive patients?
Hypertensive patients exhibit greater pulsatile energy losses that persist even when blood pressure is acutely normalized, suggesting underlying aortic wall stiffness or altered flow wave pulsatility.
Merillon et al. (1982) conducted an observational in Arterial hypertension (n=25). Arterial hypertension and blood pressure manipulation vs. Normal subjects and basal conditions was evaluated on Aortic input impedance, mean and pulsatile powers, and pulse wave velocity. Lowering blood pressure in hypertensive patients normalized aortic input impedance curves, but the pulsatile-to-mean power ratio remained higher, indicating greater pulsatile energy losses.
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